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POSTing large byte array to API using restTemplate

I am trying to send a byte array to API and then upload the byte array to AWS. This below code works fine for small files up to 4mb. but if the file is more than 4mb then I get this below exception. Is there any alternative to upload a byte array?
HttpServerErrorException$InternalServerError
Service
SimpleClientHttpRequestFactory requestFactory = new SimpleClientHttpRequestFactory();
requestFactory.setBufferRequestBody(false);
RestTemplate restTemplate = new RestTemplate();
restTemplate.setRequestFactory(requestFactory);
HttpHeaders headers = new HttpHeaders();
MultiValueMap<String, Object> map = new LinkedMultiValueMap<String, Object>();
map.add("bucket", datajockeys3bucket.replace(sing_env,env));
map.add("key", "clone".concat(sampleFile.substring(sampleFile.lastIndexOf("/"))));
map.add("file", sampleFileArray);
HttpEntity<MultiValueMap> request = new HttpEntity(map, headers);
restTemplate.exchange(dataJockeyUrl.replace(sing_env,env).concat("/upload"), HttpMethod.POST, request, Void.class);
Controller
#PostMapping("/upload")
public void uploadToS3(#RequestParam String bucket, #RequestParam String key, #RequestParam byte[] file){
dataJockeyService.uploadFile(bucket,key,file);
}
How to fix this?
Stack Trace:
org.springframework.web.client.HttpServerErrorException$InternalServerError: 500 null
at org.springframework.web.client.HttpServerErrorException.create(HttpServerErrorException.java:79)
at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:124)
at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:102)
at org.springframework.web.client.ResponseErrorHandler.handleError(ResponseErrorHandler.java:63)
at org.springframework.web.client.RestTemplate.handleResponse(RestTemplate.java:778)
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:736)
at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:670)
at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:579)
at com.clarivate.singularity.datajockey.services.impl.DataJockeyService.cloneJob(DataJockeyService.java:629)
at com.clarivate.singularity.datajockey.services.impl.DataJockeyService$$FastClassBySpringCGLIB$$ec3c5e50.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:684)
at com.clarivate.singularity.datajockey.services.impl.DataJockeyService$$EnhancerBySpringCGLIB$$ba7a7da2.cloneJob(<generated>)
at com.clarivate.singularity.datajockey.controller.DataJockeyController.cloneJob(DataJockeyController.java:244)
at com.clarivate.singularity.datajockey.controller.DataJockeyController$$FastClassBySpringCGLIB$$cbb9847d.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:749)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
at org.springframework.validation.beanvalidation.MethodValidationInterceptor.invoke(MethodValidationInterceptor.java:119)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:88)
at com.clarivate.singularity.datajockey.timelogger.SourceMasterExecutionTimeLogger.logTime(SourceMasterExecutionTimeLogger.java:28)
at com.clarivate.singularity.datajockey.timelogger.SourceMasterExecutionTimeLogger.profileAllControllerMethods(SourceMasterExecutionTimeLogger.java:19)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:644)
at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:633)
at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:70)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:93)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:688)
at com.clarivate.singularity.datajockey.controller.DataJockeyController$$EnhancerBySpringCGLIB$$82d6484.cloneJob(<generated>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:892)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:797)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1039)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.boot.actuate.web.trace.servlet.HttpTraceFilter.doFilterInternal(HttpTraceFilter.java:88)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:109)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:109)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:109)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:109)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.filterAndRecordMetrics(WebMvcMetricsFilter.java:114)
at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:104)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:109)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:109)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:853)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1587)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)

AWS Java V2 SDK failing with connect timed out while getting token from STS service behind corporate proxy

I am trying to get AWS SDK V2 setup on my project I want to use the DynamoDbAsyncClient from the V2 SDK.
My AWS Configuration is as below:
#Configuration
public class AwsSdkV2Configuration {
private static final String SESSION = "ddb_access";
#Value("${amazon.aws.role:}")
private String amazonAWSRole;
#Value("${amazon.aws.accesskey:}")
private String amazonAWSAccessKey;
#Value("${amazon.aws.secretkey:}")
private String amazonAWSSecretKey;
#Bean
public AwsCredentialsProvider amazonAWSCredentialsProviderV2() {
Region region = Region.EU_WEST_1;
AwsBasicCredentials awsCreds = AwsBasicCredentials.create(
amazonAWSAccessKey,
amazonAWSSecretKey);
StaticCredentialsProvider credentialsProvider = StaticCredentialsProvider.create(awsCreds);
StsClient stsClient = StsClient.builder()
.region(region)
.credentialsProvider(credentialsProvider)
.build();
return StsAssumeRoleCredentialsProvider
.builder()
.refreshRequest(AssumeRoleRequest.builder()
.roleArn(amazonAWSRole)
.roleSessionName("aws_sdk_v2_access")
.build())
.stsClient(stsClient)
.build();
}
#Bean
public DynamoDbAsyncClient dynamoDbAsyncClient(AwsCredentialsProvider amazonAWSCredentialsProviderV2) {
return DynamoDbAsyncClient.builder()
.region(Region.EU_WEST_1)
.credentialsProvider(amazonAWSCredentialsProviderV2)
.build();
}
}
and my DynamoDb service class is as below:
#Service
#AllArgsConstructor
public class DynamoDbV2Service {
private final DynamoDbAsyncClient dynamoDbAsyncClient;
public void saveActivation() {
Map<String,AttributeValue> itemKey = new HashMap<>();
String keyVal = UUID.randomUUID().toString();
String key = "id";
itemKey.put(key, AttributeValue.builder().s(keyVal).build());
Map<String,AttributeValue> itemValues = new HashMap<>();
// Add all content to the table
itemValues.put(key, AttributeValue.builder().s(keyVal).build());
itemValues.put("ref", AttributeValue.builder().s("REf123").build());
itemValues.put("id", AttributeValue.builder().s("id").build());
itemValues.put("uid", AttributeValue.builder().s("uid123").build());
PutItemRequest request = PutItemRequest.builder()
.tableName("dd-table-1")
.item(itemValues)
.build();
try {
dynamoDbAsyncClient.putItem(request).get();
log.info("dd-table-1 was successfully updated");
} catch (ResourceNotFoundException e) {
log.error("Error: The Amazon DynamoDB table \"%s\" can't be found.\n", DDTable.class.getName());
log.error("Be sure that it exists and that you've typed its name correctly!");
} catch (DynamoDbException e) {
log.error(e.getMessage());
} catch (ExecutionException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
log.info("Done!");
}
}
The exception I get when I do putItem:
java.util.concurrent.ExecutionException: software.amazon.awssdk.core.exception.SdkClientException: Unable to execute HTTP request: Connect to sts.eu-west-1.amazonaws.com:443 [sts.eu-west-1.amazonaws.com/54.239.37.73] failed: connect timed out
at java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357)
at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1908)
at com.aws.service.DynamoDbV2Service.saveActivation(DynamoDbV2Service.java:47)
at com.aws.controller.DdbController.handleActivationV2(DdbController.java:167)
at com.aws.controller.DdbController$$FastClassBySpringCGLIB$$848d2f04.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:771)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749)
at org.springframework.validation.beanvalidation.MethodValidationInterceptor.invoke(MethodValidationInterceptor.java:120)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:749)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:691)
at com.aws.controller.DdbController$$EnhancerBySpringCGLIB$$f1cbe856.handleActivationV2(<generated>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:879)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:92)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:209)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:109)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1594)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
Caused by: software.amazon.awssdk.core.exception.SdkClientException: Unable to execute HTTP request: Connect to sts.eu-west-1.amazonaws.com:443 [sts.eu-west-1.amazonaws.com/54.239.37.73] failed: connect timed out
at software.amazon.awssdk.core.exception.SdkClientException$BuilderImpl.build(SdkClientException.java:98)
at software.amazon.awssdk.core.exception.SdkClientException.create(SdkClientException.java:43)
at software.amazon.awssdk.core.internal.http.pipeline.stages.utils.RetryableStageHelper.setLastException(RetryableStageHelper.java:204)
at software.amazon.awssdk.core.internal.http.pipeline.stages.RetryableStage.execute(RetryableStage.java:82)
at software.amazon.awssdk.core.internal.http.pipeline.stages.RetryableStage.execute(RetryableStage.java:36)
at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
at software.amazon.awssdk.core.internal.http.StreamManagingStage.execute(StreamManagingStage.java:56)
at software.amazon.awssdk.core.internal.http.StreamManagingStage.execute(StreamManagingStage.java:36)
at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallTimeoutTrackingStage.executeWithTimer(ApiCallTimeoutTrackingStage.java:80)
at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallTimeoutTrackingStage.execute(ApiCallTimeoutTrackingStage.java:60)
at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallTimeoutTrackingStage.execute(ApiCallTimeoutTrackingStage.java:42)
at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallMetricCollectionStage.execute(ApiCallMetricCollectionStage.java:48)
at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallMetricCollectionStage.execute(ApiCallMetricCollectionStage.java:31)
at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
at software.amazon.awssdk.core.internal.http.pipeline.stages.ExecutionFailureExceptionReportingStage.execute(ExecutionFailureExceptionReportingStage.java:37)
at software.amazon.awssdk.core.internal.http.pipeline.stages.ExecutionFailureExceptionReportingStage.execute(ExecutionFailureExceptionReportingStage.java:26)
at software.amazon.awssdk.core.internal.http.AmazonSyncHttpClient$RequestExecutionBuilderImpl.execute(AmazonSyncHttpClient.java:193)
at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.invoke(BaseSyncClientHandler.java:103)
at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.doExecute(BaseSyncClientHandler.java:167)
at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.lambda$execute$1(BaseSyncClientHandler.java:82)
at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.measureApiCallSuccess(BaseSyncClientHandler.java:175)
at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.execute(BaseSyncClientHandler.java:76)
at software.amazon.awssdk.core.client.handler.SdkSyncClientHandler.execute(SdkSyncClientHandler.java:45)
at software.amazon.awssdk.awscore.client.handler.AwsSyncClientHandler.execute(AwsSyncClientHandler.java:56)
at software.amazon.awssdk.services.sts.DefaultStsClient.assumeRole(DefaultStsClient.java:260)
at software.amazon.awssdk.services.sts.auth.StsAssumeRoleCredentialsProvider.getUpdatedCredentials(StsAssumeRoleCredentialsProvider.java:67)
at software.amazon.awssdk.services.sts.auth.StsCredentialsProvider.updateSessionCredentials(StsCredentialsProvider.java:80)
at software.amazon.awssdk.utils.cache.CachedSupplier.refreshCache(CachedSupplier.java:132)
at software.amazon.awssdk.utils.cache.CachedSupplier.get(CachedSupplier.java:89)
at software.amazon.awssdk.services.sts.auth.StsCredentialsProvider.resolveCredentials(StsCredentialsProvider.java:91)
at software.amazon.awssdk.services.sts.auth.StsAssumeRoleCredentialsProvider.resolveCredentials(StsAssumeRoleCredentialsProvider.java:41)
at software.amazon.awssdk.awscore.internal.AwsExecutionContextBuilder.resolveCredentials(AwsExecutionContextBuilder.java:165)
at software.amazon.awssdk.awscore.internal.AwsExecutionContextBuilder.invokeInterceptorsAndCreateExecutionContext(AwsExecutionContextBuilder.java:102)
at software.amazon.awssdk.awscore.client.handler.AwsAsyncClientHandler.invokeInterceptorsAndCreateExecutionContext(AwsAsyncClientHandler.java:65)
at software.amazon.awssdk.core.internal.handler.BaseAsyncClientHandler.lambda$execute$1(BaseAsyncClientHandler.java:77)
at software.amazon.awssdk.core.internal.handler.BaseAsyncClientHandler.measureApiCallSuccess(BaseAsyncClientHandler.java:282)
at software.amazon.awssdk.core.internal.handler.BaseAsyncClientHandler.execute(BaseAsyncClientHandler.java:75)
at software.amazon.awssdk.awscore.client.handler.AwsAsyncClientHandler.execute(AwsAsyncClientHandler.java:52)
at software.amazon.awssdk.services.dynamodb.DefaultDynamoDbAsyncClient.putItem(DefaultDynamoDbAsyncClient.java:4198)
... 76 more
Caused by: org.apache.http.conn.ConnectTimeoutException: Connect to sts.eu-west-1.amazonaws.com:443 [sts.eu-west-1.amazonaws.com/54.239.37.73] failed: connect timed out
at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:151)
at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:376)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at software.amazon.awssdk.http.apache.internal.conn.ClientConnectionManagerFactory$Handler.invoke(ClientConnectionManagerFactory.java:80)
at com.sun.proxy.$Proxy143.connect(Unknown Source)
at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:393)
at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236)
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186)
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56)
at software.amazon.awssdk.http.apache.internal.impl.ApacheSdkHttpClient.execute(ApacheSdkHttpClient.java:72)
at software.amazon.awssdk.http.apache.ApacheHttpClient.execute(ApacheHttpClient.java:253)
at software.amazon.awssdk.http.apache.ApacheHttpClient.access$500(ApacheHttpClient.java:106)
at software.amazon.awssdk.http.apache.ApacheHttpClient$1.call(ApacheHttpClient.java:232)
at software.amazon.awssdk.http.apache.ApacheHttpClient$1.call(ApacheHttpClient.java:229)
at software.amazon.awssdk.core.internal.util.MetricUtils.measureDurationUnsafe(MetricUtils.java:64)
at software.amazon.awssdk.core.internal.http.pipeline.stages.MakeHttpRequestStage.executeHttpRequest(MakeHttpRequestStage.java:76)
at software.amazon.awssdk.core.internal.http.pipeline.stages.MakeHttpRequestStage.execute(MakeHttpRequestStage.java:55)
at software.amazon.awssdk.core.internal.http.pipeline.stages.MakeHttpRequestStage.execute(MakeHttpRequestStage.java:39)
at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallAttemptTimeoutTrackingStage.execute(ApiCallAttemptTimeoutTrackingStage.java:73)
at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallAttemptTimeoutTrackingStage.execute(ApiCallAttemptTimeoutTrackingStage.java:42)
at software.amazon.awssdk.core.internal.http.pipeline.stages.TimeoutExceptionHandlingStage.execute(TimeoutExceptionHandlingStage.java:78)
at software.amazon.awssdk.core.internal.http.pipeline.stages.TimeoutExceptionHandlingStage.execute(TimeoutExceptionHandlingStage.java:40)
at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallAttemptMetricCollectionStage.execute(ApiCallAttemptMetricCollectionStage.java:50)
at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallAttemptMetricCollectionStage.execute(ApiCallAttemptMetricCollectionStage.java:36)
at software.amazon.awssdk.core.internal.http.pipeline.stages.RetryableStage.execute(RetryableStage.java:80)
... 112 more
Caused by: java.net.SocketTimeoutException: connect timed out
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:607)
at org.apache.http.conn.ssl.SSLConnectionSocketFactory.connectSocket(SSLConnectionSocketFactory.java:368)
at software.amazon.awssdk.http.apache.internal.conn.SdkTlsSocketFactory.connectSocket(SdkTlsSocketFactory.java:113)
at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142)
... 145 more
26-09-2021 18:14:22.346 [http-nio-8082-exec-1] INFO c.w.w.i.p.r.s.DynamoDbV2Service.saveActivation ,
correlationId=unknown, loggedInUserId=unknown , Done!
PS: I am executing this behind a corporate proxy and I have tried providing the proxy configuration as well while retrieving the STS token but that didnt worked out either.
Any help will be greatly appreciated. Thanks..!

As mentioned in the comment, software.amazon.awssdk.http.apache.ProxyConfiguration (ProxyConfiguration.Builder) can be used for this purpose or one another possible way is to set proxy settings at JVM level. Using -Dhttp.proxyHost and -Dhttp.proxyPort system properties.

why Gson returns null after some iterations on a loop reading a valid JSON file

I want to monitor progress of a Java server batch process with an Angular browser app.
For this, I plan to use Tomcat and Jersey SSE (Server Sent Events).
THe batch process iterates on a file and update a monitoring file on each iteration with progress information stored in JSON, such as :
{"status":"UserImportRunning","processedUsers":312,"invalidUsers":10,"addedUsers":302,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
At the end of the batch process, the file is updated with final information:
{"status":"UserImportCompleted","processedUsers":4312,"invalidUsers":110,"addedUsers":4202,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
Here is the code which updates the file:
public void updateUserImportMonitoringData(File userImportMonitoringFile, UserImportMonitoringRec userImportMonitoring, Gson gson) throws Exception {
try {
String userImportMonitoringJson = gson.toJson(userImportMonitoring);
FileWriter fw = new FileWriter(userImportMonitoringFile);
fw.write(userImportMonitoringJson);
fw.close();
System.out.println("write: " + userImportMonitoringJson);
} catch (Exception ex) {
FileUtils.logError(ex);
throw new Exception(MetaLmsConstants.UserImportProcessError);
}
}
On the other hand, the Jersey SSE method iterates to read this monitoring file and the plan is to send this monitoring data to the browser app.
Here is the code which reads the file.
public UserImportMonitoringRec getUserImportMonitoringData(String userImportFileName, Gson gson) throws Exception {
UserImportMonitoringRec userImportMonitoring;
try {
JsonReader reader = new JsonReader(new FileReader(userImportFileName + ".json"));
userImportMonitoring = gson.fromJson(reader, UserImportMonitoringRec.class);
System.out.println("read: " + userImportMonitoring.toString());
} catch (Exception ex) {
FileUtils.logError(ex);
throw new Exception(MetaLmsConstants.UserImportProcessError);
}
return userImportMonitoring;
}
Unfortunately, this does not work, I get a null exception while reading the file after few iterations.
Here is a sample console log:
write: {"status":"UserImportStarted","processedUsers":0,"invalidUsers":0,"addedUsers":0,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
read: UserImportMonitoringRec[status=UserImportStarted, processedUsers=0, invalidUsers=0, addedUsers=0, addedSites=0, addedGroups=0, updatedUsers=0, deletedUsers=0, ignoredUsers=0]
read: UserImportMonitoringRec[status=UserImportStarted, processedUsers=0, invalidUsers=0, addedUsers=0, addedSites=0, addedGroups=0, updatedUsers=0, deletedUsers=0, ignoredUsers=0]
read: UserImportMonitoringRec[status=UserImportStarted, processedUsers=0, invalidUsers=0, addedUsers=0, addedSites=0, addedGroups=0, updatedUsers=0, deletedUsers=0, ignoredUsers=0]
write: {"status":"UserImportRunning","processedUsers":1,"invalidUsers":0,"addedUsers":0,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
write: {"status":"UserImportRunning","processedUsers":2,"invalidUsers":0,"addedUsers":0,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
write: {"status":"UserImportRunning","processedUsers":3,"invalidUsers":0,"addedUsers":0,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
write: {"status":"UserImportRunning","processedUsers":4,"invalidUsers":0,"addedUsers":0,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
write: {"status":"UserImportRunning","processedUsers":5,"invalidUsers":0,"addedUsers":0,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
write: {"status":"UserImportRunning","processedUsers":6,"invalidUsers":0,"addedUsers":0,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
write: {"status":"UserImportRunning","processedUsers":7,"invalidUsers":0,"addedUsers":0,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
write: {"status":"UserImportRunning","processedUsers":8,"invalidUsers":0,"addedUsers":0,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
write: {"status":"UserImportRunning","processedUsers":9,"invalidUsers":0,"addedUsers":0,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
write: {"status":"UserImportRunning","processedUsers":10,"invalidUsers":0,"addedUsers":0,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
write: {"status":"UserImportRunning","processedUsers":11,"invalidUsers":0,"addedUsers":0,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
write: {"status":"UserImportRunning","processedUsers":12,"invalidUsers":0,"addedUsers":0,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
write: {"status":"UserImportRunning","processedUsers":13,"invalidUsers":0,"addedUsers":0,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
write: {"status":"UserImportRunning","processedUsers":14,"invalidUsers":0,"addedUsers":0,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
write: {"status":"UserImportRunning","processedUsers":15,"invalidUsers":0,"addedUsers":0,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
write: {"status":"UserImportRunning","processedUsers":16,"invalidUsers":0,"addedUsers":0,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
write: {"status":"UserImportRunning","processedUsers":17,"invalidUsers":0,"addedUsers":0,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
File Exception: null
java.lang.NullPointerException
at com.mycompany.myapi.resources.UserImportRest.getUserImportMonitoringData(UserImportRest.java:283)
at com.mycompany.myapi.resources.UserImportRest.getUserImportProcessEvent(UserImportRest.java:256)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:52)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:124)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:167)
at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$TypeOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:219)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:79)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:469)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:391)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:80)
at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:255)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:248)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:244)
at org.glassfish.jersey.internal.Errors.process(Errors.java:292)
at org.glassfish.jersey.internal.Errors.process(Errors.java:274)
at org.glassfish.jersey.internal.Errors.process(Errors.java:244)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:265)
at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:234)
at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:680)
at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:394)
at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:346)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:366)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:319)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:205)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at com.mycompany.myapi.utils.CharacterSetFilter.doFilter(CharacterSetFilter.java:24)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at com.mycompany.myapi.utils.JWTFilter.doFilter(JWTFilter.java:78)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.filters.CorsFilter.handleSimpleCORS(CorsFilter.java:259)
at org.apache.catalina.filters.CorsFilter.doFilter(CorsFilter.java:163)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:832)
java.lang.Exception: UserImportProcessError
at com.mycompany.myapi.resources.UserImportRest.getUserImportMonitoringData(UserImportRest.java:286)
at com.mycompany.myapi.resources.UserImportRest.getUserImportProcessEvent(UserImportRest.java:256)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:52)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:124)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:167)
at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$TypeOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:219)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:79)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:469)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:391)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:80)
at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:255)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:248)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:244)
at org.glassfish.jersey.internal.Errors.process(Errors.java:292)
at org.glassfish.jersey.internal.Errors.process(Errors.java:274)
at org.glassfish.jersey.internal.Errors.process(Errors.java:244)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:265)
at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:234)
at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:680)
at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:394)
at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:346)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:366)
at org.glassfish.jersey.servlet.Servle
write: {"status":"UserImportRunning","processedUsers":18,"invalidUsers":0,"addedUsers":0,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
tContainer.service(ServletContainer.java:319)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:205)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at com.mycompany.myapi.utils.CharacterSetFilter.doFilter(CharacterSetFilter.java:24)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at com.mycompany.myapi.utils.JWTFilter.doFilter(JWTFilter.java:78)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.filters.CorsFilter.handleSimpleCORS(CorsFilter.java:259)
at org.apache.catalina.filters.CorsFilter.doFilter(CorsFilter.java:163)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:832)
write: {"status":"UserImportRunning","processedUsers":19,"invalidUsers":0,"addedUsers":0,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
write: {"status":"UserImportRunning","processedUsers":20,"invalidUsers":0,"addedUsers":0,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
write: {"status":"UserImportRunning","processedUsers":21,"invalidUsers":0,"addedUsers":0,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
...and same write log lines until end of file is reached below
write: {"status":"UserImportRunning","processedUsers":6209,"invalidUsers":0,"addedUsers":0,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
write: {"status":"UserImportRunning","processedUsers":6210,"invalidUsers":0,"addedUsers":0,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
write: {"status":"UserImportRunning","processedUsers":6211,"invalidUsers":0,"addedUsers":0,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
write: {"status":"UserImportRunning","processedUsers":6212,"invalidUsers":0,"addedUsers":0,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
write: {"status":"UserImportCompleted","processedUsers":6212,"invalidUsers":0,"addedUsers":0,"addedSites":0,"addedGroups":0,"updatedUsers":0,"deletedUsers":0,"ignoredUsers":0}
Please help me figure our why I get this error and how to fix it.

Restarting Spring Boot Application

I have been lately struggling to make a working restart for my Java Sping Boot App. I tried 2 methods, one of them is restarting the application 1 time, and if i try to do this second time i get a nullPointerException, so the first method looks like this, this is my main class:
#SpringBootApplication
public class Application {
private static ConfigurableApplicationContext context;
public static void main(String[] args) {
context = SpringApplication.run(Application.class, args);
}
public static void restart() {
ApplicationArguments args = context.getBean(ApplicationArguments.class);
Thread thread = new Thread(() -> {
context.close();
context = SpringApplication.run(Application.class, args.getSourceArgs());
});
thread.setDaemon(false);
thread.start();
}
}
and i call it like going into localhost:8080/restart:
#RestController
public class RestartController {
#GetMapping("/restart")
public void restart() {
Main.restart();
}
}
this methods restart the application just fine in a couple of seconds but if i try to do this second time, i get:
java.lang.NullPointerException: null
at com.example.demo.Main.restart(Main.java:38) ~[classes/:na]
at com.example.demo.RestartController.restart(RestartController.java:13) ~[classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_231]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_231]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_231]
at java.lang.reflect.Method.invoke(Unknown Source) ~[na:1.8.0_231]
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) ~[spring-web-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) ~[spring-web-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:106) ~[spring-webmvc-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:888) ~[spring-webmvc-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793) ~[spring-webmvc-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040) ~[spring-webmvc-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) ~[spring-webmvc-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) ~[spring-webmvc-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:634) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.27.jar:9.0.27]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:92) ~[spring-web-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:108) ~[spring-boot-actuator-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.1.RELEASE.jar:5.2.1.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526) [tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861) [tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1579) [tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.27.jar:9.0.27]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [na:1.8.0_231]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [na:1.8.0_231]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.27.jar:9.0.27]
at java.lang.Thread.run(Unknown Source) [na:1.8.0_231]
the second method is to use actuator, this is the code that i use:
public class RestartService {
#Autowired
private static RestartEndpoint restartEndpoint;
public static void restartApp() {
Thread restartThread = new Thread(() -> restartEndpoint.restart());
restartThread.setDaemon(false);
restartThread.start();
}
}
i tried using either static or normal call by creating new Restart Service and calling the method, both ways gives me an error when i call it:
Exception in thread "Thread-12" java.lang.NullPointerException
at com.example.demo.RestartService.lambda$0(RestartService.java:15)
at java.lang.Thread.run(Unknown Source)
I have like 12 hours left until deadline for my project so any advices is much appreciated here :(

You cannot autowiring on static properties. Remove the static from the property and method. And leave the extra thread run.
Check the example again. Don't mix it.
https://www.baeldung.com/java-restart-spring-boot-app

DCTID i actually missed the Dev-Tool restarter method in the topic provided by you, which worked for me, thanks everyone for help!
this is the method provided by Lucifer Nik:
I've solved this issue by using Restarter from Spring Devtools. Add this to pom.xml:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
Then use org.springframework.boot.devtools.restart.Restarter to call this:
Restarter.getInstance().restart();

Spring rest template vs unittest for https requests

I'm getting exception during using rest template but not for unittest - any ideas?
#GetMapping("/webapp/git")
public Object hit() {
return restTemplate.getForObject("https://api.twitter.com/1.1/followers/ids.json", Object.class);
// return Unirest.get("https://api.twitter.com/1.1/followers/ids.json").asString().getBody();
}
org.springframework.web.client.HttpClientErrorException$BadRequest: 400 Bad Request
at org.springframework.web.client.HttpClientErrorException.create(HttpClientErrorException.java:79) ~[spring-web-5.2.0.RELEASE.jar:5.2.0.RELEASE]
at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:123) ~[spring-web-5.2.0.RELEASE.jar:5.2.0.RELEASE]
at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:102) ~[spring-web-5.2.0.RELEASE.jar:5.2.0.RELEASE]
at org.springframework.web.client.ResponseErrorHandler.handleError(ResponseErrorHandler.java:63) ~[spring-web-5.2.0.RELEASE.jar:5.2.0.RELEASE]
at org.springframework.web.client.RestTemplate.handleResponse(RestTemplate.java:785) ~[spring-web-5.2.0.RELEASE.jar:5.2.0.RELEASE]
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:743) ~[spring-web-5.2.0.RELEASE.jar:5.2.0.RELEASE]
at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:677) ~[spring-web-5.2.0.RELEASE.jar:5.2.0.RELEASE]
at org.springframework.web.client.RestTemplate.getForEntity(RestTemplate.java:345) ~[spring-web-5.2.0.RELEASE.jar:5.2.0.RELEASE]
at org.owozniak.datahaverestingapplication.webapp.WebappRestController.hit(WebappRestController.java:77) ~[classes/:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:567) ~[na:na]
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) ~[spring-web-5.2.0.RELEASE.jar:5.2.0.RELEASE]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) ~[spring-web-5.2.0.RELEASE.jar:5.2.0.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:106) ~[spring-webmvc-5.2.0.RELEASE.jar:5.2.0.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:888) ~[spring-webmvc-5.2.0.RELEASE.jar:5.2.0.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793) ~[spring-webmvc-5.2.0.RELEASE.jar:5.2.0.RELEASE]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.2.0.RELEASE.jar:5.2.0.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040) ~[spring-webmvc-5.2.0.RELEASE.jar:5.2.0.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) ~[spring-webmvc-5.2.0.RELEASE.jar:5.2.0.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.2.0.RELEASE.jar:5.2.0.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) ~[spring-webmvc-5.2.0.RELEASE.jar:5.2.0.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:634) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.2.0.RELEASE.jar:5.2.0.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.27.jar:9.0.27]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:108) ~[spring-boot-actuator-2.2.0.RELEASE.jar:2.2.0.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.0.RELEASE.jar:5.2.0.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.2.0.RELEASE.jar:5.2.0.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.0.RELEASE.jar:5.2.0.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1579) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) ~[na:na]
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) ~[na:na]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.27.jar:9.0.27]
at java.base/java.lang.Thread.run(Thread.java:835) ~[na:na]

RestTemplate does not support HTTP codes other than 200. One solution is to use HttpStatusCodeException to catch other types of HTTP codes.
try {
restTemplate.getForObject("https://api.twitter.com/1.1/followers/ids.json", Object.class);
}
} catch (HttpStatusCodeException e) {
if (e.getStatusCode() == HttpStatus.BAD_REQUEST) { // Http code 400
String bodyResponse = e.getResponseBodyAsString();
ObjectMapper mapper = new ObjectMapper();
try {
return mapper.readValue(bodyResponse, Object.class);
} catch (Exception exception) {
}
}
And if you use Spring, you can configure the Bean RestTemplate like this:
#Bean
public RestTemplate restTemplate() {
return new RestTemplate(new HttpComponentsClientHttpRequestFactory());
}
I hope it helps.