Develop Reference

QAF 3.0.1b | Issue in registering QAFExtendedWebElement listener

The listener not registering during run. Getting below error
[QAFExtendedWebElement] - Unable to register listener class com.proj.listener.proj_qaf_listener
java.lang.ClassNotFoundException: com.proj.listener.proj_qaf_listener
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at com.qmetry.qaf.automation.ui.webdriver.QAFExtendedWebElement.registerListeners(QAFExtendedWebElement.java:1271)
at com.qmetry.qaf.automation.ui.webdriver.QAFExtendedWebElement.<init>(QAFExtendedWebElement.java:113)
at com.qmetry.qaf.automation.ui.webdriver.QAFExtendedWebElement$JsonConvertor.newRemoteWebElement(QAFExtendedWebElement.java:425)
at com.qmetry.qaf.automation.ui.webdriver.QAFExtendedWebElement$JsonConvertor.newRemoteWebElement(QAFExtendedWebElement.java:1)
at org.openqa.selenium.remote.internal.JsonToWebElementConverter.apply(JsonToWebElementConverter.java:55)
at com.qmetry.qaf.automation.ui.webdriver.QAFExtendedWebElement$JsonConvertor.apply(QAFExtendedWebElement.java:410)
at com.google.common.collect.Iterators$6.transform(Iterators.java:788)
at com.google.common.collect.TransformedIterator.next(TransformedIterator.java:47)
at com.google.common.collect.Iterators.addAll(Iterators.java:358)
at com.google.common.collect.Lists.newArrayList(Lists.java:147)
at com.google.common.collect.Lists.newArrayList(Lists.java:133)
at com.qmetry.qaf.automation.ui.webdriver.QAFExtendedWebElement$JsonConvertor.apply(QAFExtendedWebElement.java:407)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:561)
at com.qmetry.qaf.automation.ui.webdriver.QAFExtendedWebDriver.execute(QAFExtendedWebDriver.java:236)
at org.openqa.selenium.remote.RemoteWebDriver.findElements(RemoteWebDriver.java:353)
at org.openqa.selenium.remote.RemoteWebDriver.findElementsByName(RemoteWebDriver.java:408)
at org.openqa.selenium.By$ByName.findElements(By.java:276)
at com.qmetry.qaf.automation.ui.webdriver.ByAny.findElements(ByAny.java:65)
at com.qmetry.qaf.automation.ui.webdriver.ByAny.findElement(ByAny.java:49)
at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:315)
at com.qmetry.qaf.automation.ui.webdriver.QAFExtendedWebDriver.findElement(QAFExtendedWebDriver.java:172)
at com.qmetry.qaf.automation.ui.webdriver.QAFExtendedWebDriver.findElement(QAFExtendedWebDriver.java:1)
at org.openqa.selenium.support.ui.ExpectedConditions$6.apply(ExpectedConditions.java:182)
at org.openqa.selenium.support.ui.ExpectedConditions$6.apply(ExpectedConditions.java:179)
at com.qmetry.qaf.automation.ui.util.DynamicWait.until(DynamicWait.java:147)
at com.qmetry.qaf.automation.ui.webdriver.QAFExtendedWebDriver.load(QAFExtendedWebDriver.java:216)
at com.qmetry.qaf.automation.ui.webdriver.QAFExtendedWebElement.load(QAFExtendedWebElement.java:302)
at com.qmetry.qaf.automation.ui.webdriver.QAFExtendedWebElement.execute(QAFExtendedWebElement.java:249)
at org.openqa.selenium.remote.RemoteWebElement.sendKeys(RemoteWebElement.java:106)
at com.qmetry.qaf.automation.step.CommonStep.sendKeys_aroundBody6(CommonStep.java:114)
at com.qmetry.qaf.automation.step.CommonStep$AjcClosure7.run(CommonStep.java:1)
at org.aspectj.runtime.reflect.JoinPointImpl.proceed(JoinPointImpl.java:167)
at com.qmetry.qaf.automation.step.JavaStepReporter$MockJavaStep.doExecute(JavaStepReporter.java:130)
at com.qmetry.qaf.automation.step.BaseTestStep.execute(BaseTestStep.java:149)
at com.qmetry.qaf.automation.step.JavaStepReporter.javaTestStep(JavaStepReporter.java:80)
at com.qmetry.qaf.automation.step.CommonStep.sendKeys(CommonStep.java:113)
at com.rt.steps.rt_globals.iFillInTo_aroundBody86(rt_globals.java:691)
at com.rt.steps.rt_globals$AjcClosure87.run(rt_globals.java:1)
at org.aspectj.runtime.reflect.JoinPointImpl.proceed(JoinPointImpl.java:167)
at com.qmetry.qaf.automation.step.JavaStepReporter.javaTestStep(JavaStepReporter.java:93)
at com.rt.steps.rt_globals.iFillInTo(rt_globals.java:688)
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 com.qmetry.qaf.automation.step.JavaStep.doExecute(JavaStep.java:150)
at com.qmetry.qaf.automation.step.BaseTestStep.execute(BaseTestStep.java:149)
at com.qmetry.qaf.automation.step.StringTestStep.execute(StringTestStep.java:127)
at com.qmetry.qaf.automation.step.client.Scenario.execute(Scenario.java:174)
at com.qmetry.qaf.automation.step.client.Scenario.scenario(Scenario.java:237)
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.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:104)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:645)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:851)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1177)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:129)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:112)
at org.testng.TestRunner.privateRun(TestRunner.java:756)
at org.testng.TestRunner.run(TestRunner.java:610)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:387)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:382)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:340)
at org.testng.SuiteRunner.run(SuiteRunner.java:289)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1293)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1218)
at org.testng.TestNG.runSuites(TestNG.java:1133)
at org.testng.TestNG.run(TestNG.java:1104)
at org.apache.maven.surefire.testng.TestNGExecutor.run(TestNGExecutor.java:122)
at org.apache.maven.surefire.testng.TestNGXmlTestSuite.execute(TestNGXmlTestSuite.java:92)
at org.apache.maven.surefire.testng.TestNGProvider.invoke(TestNGProvider.java:101)
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.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:164)
at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:110)
at org.apache.maven.surefire.booter.SurefireStarter.invokeProvider(SurefireStarter.java:172)
at org.apache.maven.surefire.booter.SurefireStarter.runSuitesInProcessWhenForked(SurefireStarter.java:104)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:70)
I have added a new QAFExtendedWebElement listener in com.proj.listener
In application.properties I have added:
we.command.listeners=com.proj.listener.proj_qaf_listener
Listener file: proj_qaf_listner.java
package com.proj.listener;
import static com.qmetry.qaf.automation.core.ConfigurationManager.getBundle;
import static com.qmetry.qaf.automation.step.CommonStep.*;
import static com.qmetry.qaf.automation.util.Validator.assertThat;
// QAF Listner:
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.impl.LogFactoryImpl;
import org.openqa.selenium.remote.DriverCommand;
import com.qmetry.qaf.automation.ui.webdriver.CommandTracker;
import com.qmetry.qaf.automation.ui.webdriver.QAFExtendedWebElement;
import com.qmetry.qaf.automation.ui.webdriver.QAFWebElementCommandListener;
import com.qmetry.qaf.automation.ui.webdriver.QAFWebElementCommandAdapter;
public class proj_qaf_listner extends QAFWebElementCommandAdapter {
// Log logger = LogFactory.getLog(getClass());
public void onFailure(
QAFExtendedWebElement element,
CommandTracker commandTracker
) {
System.out.println("=====<<<<<<< FALLBACK element >>>>>>>------> \n" + element);
System.out.println("=====<<<<<<< FALLBACK commandTracker >>>>>>>------> \n " + commandTracker);
//By newBy = <do needful>;
// element.setBy(newBy);
// commandTracker.setRetry(true);
}
}
Referred following links:
https://qmetry.github.io/qaf/latest/qaf_listeners.html

Identified the issue..
The wrong filename given
Registered:
we.command.listeners=com.proj.listener.proj_qaf_listener
but the filename is missing "e".
Listener file: proj_qaf_listner.java

Getting null pointer exception while creating JSONRPCCLIENT object in bitcoind

Class for creation of JsonRpcClient object for connecting my application by bitcoin test net
already installed bitcoind and sync it with testnet as well from main network of bitcoin.
Trying to create unique wallet address but getting null pointer exception as i can observe values are not being used from application.properties file i m using spring tool suite and maven dependencywf.bitcoin
bitcoin-rpc-client
1.1.0
package bitcoin.utils;
import java.net.URL;
import java.util.Properties;
import javax.annotation.PostConstruct;
import javax.naming.CommunicationException;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Component;
import wf.bitcoin.javabitcoindrpcclient.BitcoinJSONRPCClient;
import wf.bitcoin.javabitcoindrpcclient.BitcoinRPCException;
#Configuration
#Component
public class ResourceUtils {
private static final Logger logger = LoggerFactory.getLogger(ResourceUtils.class);
#Value("${node.bitcoind.rpc.protocol}")
private static String protocol;
#Value("${node.bitcoind.rpc.host}")
private static String host;
#Value("${node.bitcoind.rpc.port}")
private static String port;
#Value("${node.bitcoind.rpc.user}")
private static String user;
#Value("${node.bitcoind.rpc.password}")
private static String password;
#Value("${node.bitcoind.http.auth_scheme}")
private static String authScheme;
private static Properties nodeConfig;
#PostConstruct
void init() {
logger.info("in init {}", "in init");
nodeConfig = new Properties();
nodeConfig.setProperty("node.bitcoind.rpc.protocol", protocol);
logger.debug("protocol==============================================={}", protocol);
nodeConfig.setProperty("node.bitcoind.rpc.host", host);
logger.debug("host==============================================={}", host);
nodeConfig.setProperty("node.bitcoind.rpc.port", port);
logger.debug("port==============================================={}", port);
nodeConfig.setProperty("node.bitcoind.rpc.user", user);
logger.debug("user==============================================={}", user);
nodeConfig.setProperty("node.bitcoind.rpc.password", password);
logger.debug("password==============================================={}", password);
nodeConfig.setProperty("node.bitcoind.http.auth_scheme", authScheme);
logger.debug("authScheme==============================================={}", authScheme);
}
public ResourceUtils() {
}
public static CloseableHttpClient getHttpProvider() {
PoolingHttpClientConnectionManager connManager = new PoolingHttpClientConnectionManager();
return HttpClients.custom().setConnectionManager(connManager).build();
}
public static BitcoinJSONRPCClient getBtcdProvider() throws BitcoinRPCException, CommunicationException {
logger.info("getHttpProvider {}", getHttpProvider());
logger.info("getNodeConfig {}", getNodeConfig());
BitcoinJSONRPCClient bitcoinJsonRpcClient = null;
try {
URL url = new URL(protocol + "://" + user + ':' + password + "#" + host + ":" + port + "/");
bitcoinJsonRpcClient = new BitcoinJSONRPCClient(url);
logger.info("btcdClientt {}", bitcoinJsonRpcClient);
// bitcoinJsonRpcClient.setTxFee(BigDecimal.valueOf(0.001));
} catch (Exception e) {
return bitcoinJsonRpcClient;
}
return bitcoinJsonRpcClient;
}
public static Properties getNodeConfig() {
return nodeConfig;
}
}
Configuration File
node.bitcoind.rpc.protocol = http
node.bitcoind.rpc.host = 127.0.0.1
node.bitcoind.rpc.port = 8332
node.bitcoind.rpc.user = username
node.bitcoind.rpc.password = password
node.bitcoind.http.auth_scheme = Basic
Bitcoin.config file
rpcuser=user
rpcpassword=password
testnet=1
rpcport=8332
rpcallowip=127.0.0.1
rpcallowip=195.154.11.93
server=1
Methode for getting bitcoin wallet address
public String generateWalletAddress(String id) {
try {
BitcoinJSONRPCClient client = ResourceUtils.getBtcdProvider();
return client.getNewAddress();
} catch (CommunicationException c) {
System.err.println(c);
return null;
}
}
Stack Trace
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2020-02-12 11:50:45.205 ERROR 10991 --- [ restartedMain] o.s.boot.SpringApplication : Application run failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'resourceUtils': Invocation of init method failed; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:160) ~[spring-beans-5.2.3.RELEASE.jar:5.2.3.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:416) ~[spring-beans-5.2.3.RELEASE.jar:5.2.3.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1788) ~[spring-beans-5.2.3.RELEASE.jar:5.2.3.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595) ~[spring-beans-5.2.3.RELEASE.jar:5.2.3.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) ~[spring-beans-5.2.3.RELEASE.jar:5.2.3.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) ~[spring-beans-5.2.3.RELEASE.jar:5.2.3.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.2.3.RELEASE.jar:5.2.3.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) ~[spring-beans-5.2.3.RELEASE.jar:5.2.3.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.3.RELEASE.jar:5.2.3.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:879) ~[spring-beans-5.2.3.RELEASE.jar:5.2.3.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) ~[spring-context-5.2.3.RELEASE.jar:5.2.3.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) ~[spring-context-5.2.3.RELEASE.jar:5.2.3.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) ~[spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) [spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) [spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
at bitcoin.BitcoinApplication.main(BitcoinApplication.java:10) [classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_242]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_242]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_242]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_242]
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.2.4.RELEASE.jar:2.2.4.RELEASE]
Caused by: java.lang.NullPointerException: null
at java.util.Hashtable.put(Hashtable.java:460) ~[na:1.8.0_242]
at java.util.Properties.setProperty(Properties.java:166) ~[na:1.8.0_242]
at bitcoin.utils.ResourceUtils.init(ResourceUtils.java:47) ~[classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_242]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_242]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_242]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_242]
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:389) ~[spring-beans-5.2.3.RELEASE.jar:5.2.3.RELEASE]
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:333) ~[spring-beans-5.2.3.RELEASE.jar:5.2.3.RELEASE]
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:157) ~[spring-beans-5.2.3.RELEASE.jar:5.2.3.RELEASE]
... 23 common frames omitted

I got my solution actually the problem was of version i was using rpcport
which is changed to test.rpcport for test net from bitcoind version 17.0
hence bean were not getting the connection from my localhost server causing null pointer exception.

Heroku Postgres: relation does not exist

I've created a Java Spring website through TDD. Initially, it only needed the embedded h2 database that spring boot comes with. I eventually realized that since I'm hosting on Heroku which does not support h2 I would have to make a switch so I went with postgres. Since I've added postgres as a dependency and switched to using Heroku's environment variable for a datasource my website has failed to start. The tricky part is all my tests pass still since I'm still testing with h2 and only using postgres on production. This is the stacktrace that I see in Heroku's logs when I deploy the website.
State changed from starting to up
2018-06-22 18:28:08.543 INFO 4 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 58859 (http)
2018-06-22 18:28:09.341 WARN 4 --- [ main] o.h.engine.jdbc.spi.SqlExceptionHelper : SQL Error: 0, SQLState: 42P01
2018-06-22 18:28:09.368 ERROR 4 --- [ main] o.h.engine.jdbc.spi.SqlExceptionHelper : ERROR: relation "category" does not exist Position: 13
2018-06-22 18:28:09.502 INFO 4 --- [ main] utoConfigurationReportLoggingInitializer :
Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2018-06-22 18:28:09.599 ERROR 4 --- [ main] o.s.boot.SpringApplication : Application startup failed
java.lang.IllegalStateException: Failed to execute CommandLineRunner
at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:735) [spring-boot-1.5.10.RELEASE.jar!/:1.5.10.RELEASE]
at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:716) [spring-boot-1.5.10.RELEASE.jar!/:1.5.10.RELEASE]
at org.springframework.boot.SpringApplication.afterRefresh(SpringApplication.java:703) [spring-boot-1.5.10.RELEASE.jar!/:1.5.10.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:304) [spring-boot-1.5.10.RELEASE.jar!/:1.5.10.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118) [spring-boot-1.5.10.RELEASE.jar!/:1.5.10.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107) [spring-boot-1.5.10.RELEASE.jar!/:1.5.10.RELEASE]
at org.wecancodeit.pantryplus.PantryplusApplication.main(PantryplusApplication.java:10) [classes!/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_171-heroku]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_171-heroku]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_171-heroku]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_171-heroku]
at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48) [pantryplus-0.0.1-SNAPSHOT.jar:na]
at org.springframework.boot.loader.Launcher.launch(Launcher.java:87) [pantryplus-0.0.1-SNAPSHOT.jar:na]
at org.springframework.boot.loader.Launcher.launch(Launcher.java:50) [pantryplus-0.0.1-SNAPSHOT.jar:na]
at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:51) [pantryplus-0.0.1-SNAPSHOT.jar:na]
Caused by: org.springframework.dao.InvalidDataAccessResourceUsageException: could not execute statement; SQL [n/a]; nested exception is org.hibernate.exception.SQLGrammarException: could not execute statement
at org.springframework.orm.jpa.vendor.HibernateJpaDialect.convertHibernateAccessException(HibernateJpaDialect.java:261) ~[spring-orm-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:244) ~[spring-orm-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:503) ~[spring-orm-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
at org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:59) ~[spring-tx-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
at org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:209) ~[spring-tx-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:147) ~[spring-tx-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:133) ~[spring-data-jpa-1.11.10.RELEASE.jar!/:na]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) ~[spring-aop-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
at org.springframework.data.repository.core.support.SurroundingTransactionDetectorMethodInterceptor.invoke(SurroundingTransactionDetectorMethodInterceptor.java:57) ~[spring-data-commons-1.13.10.RELEASE.jar!/:na]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213) ~[spring-aop-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
at com.sun.proxy.$Proxy88.save(Unknown Source) ~[na:na]
at org.wecancodeit.pantryplus.ProductPopulator.run(ProductPopulator.java:26) ~[classes!/:na]
at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:732) [spring-boot-1.5.10.RELEASE.jar!/:1.5.10.RELEASE]
... 14 common frames omitted
Caused by: org.hibernate.exception.SQLGrammarException: could not execute statement
at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:106) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:109) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:95) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:207) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
at org.hibernate.dialect.identity.GetGeneratedKeysDelegate.executeAndExtract(GetGeneratedKeysDelegate.java:57) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:42) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2855) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3426) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
at org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:81) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:619) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
at org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:273) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
at org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:254) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
at org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:299) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
at org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:317) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:272) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:178) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:109) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
at org.hibernate.jpa.event.internal.core.JpaPersistEventListener.saveWithGeneratedId(JpaPersistEventListener.java:67) ~[hibernate-entitymanager-5.0.12.Final.jar!/:5.0.12.Final]
at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:189) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:132) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:58) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:775) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:748) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:753) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:1146) ~[hibernate-entitymanager-5.0.12.Final.jar!/:5.0.12.Final]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_171-heroku]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_171-heroku]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_171-heroku]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_171-heroku]
at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:298) ~[spring-orm-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
at com.sun.proxy.$Proxy82.persist(Unknown Source) ~[na:na]
at org.springframework.data.jpa.repository.support.SimpleJpaRepository.save(SimpleJpaRepository.java:508) ~[spring-data-jpa-1.11.10.RELEASE.jar!/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_171-heroku]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_171-heroku]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_171-heroku]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_171-heroku]
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.executeMethodOn(RepositoryFactorySupport.java:513) ~[spring-data-commons-1.13.10.RELEASE.jar!/:na]
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:498) ~[spring-data-commons-1.13.10.RELEASE.jar!/:na]
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:475) ~[spring-data-commons-1.13.10.RELEASE.jar!/:na]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:56) ~[spring-data-commons-1.13.10.RELEASE.jar!/:na]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99) ~[spring-tx-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:282) ~[spring-tx-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) ~[spring-tx-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136) ~[spring-tx-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
... 25 common frames omitted
Caused by: org.postgresql.util.PSQLException: ERROR: relation "category" does not exist Position: 13
at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2455) ~[postgresql-9.4.1212.jre7.jar!/:9.4.1212.jre7]
at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2155) ~[postgresql-9.4.1212.jre7.jar!/:9.4.1212.jre7]
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:288) ~[postgresql-9.4.1212.jre7.jar!/:9.4.1212.jre7]
at org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:430) ~[postgresql-9.4.1212.jre7.jar!/:9.4.1212.jre7]
at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:356) ~[postgresql-9.4.1212.jre7.jar!/:9.4.1212.jre7]
at org.postgresql.jdbc.PgPreparedStatement.executeWithFlags(PgPreparedStatement.java:168) ~[postgresql-9.4.1212.jre7.jar!/:9.4.1212.jre7]
at org.postgresql.jdbc.PgPreparedStatement.executeUpdate(PgPreparedStatement.java:135) ~[postgresql-9.4.1212.jre7.jar!/:9.4.1212.jre7]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_171-heroku]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_171-heroku]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_171-heroku]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_171-heroku]
at org.apache.tomcat.jdbc.pool.StatementFacade$StatementProxy.invoke(StatementFacade.java:114) ~[tomcat-jdbc-8.5.27.jar!/:na]
at com.sun.proxy.$Proxy98.executeUpdate(Unknown Source) ~[na:na]
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:204) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
... 68 common frames omitted
2018-06-22 18:28:09.612 INFO 4 --- [ main] ationConfigEmbeddedWebApplicationContext : Closing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext#5cb0d902: startup date [Fri Jun 22 18:27:14 UTC 2018]; root of context hierarchy
2018-06-22 18:28:09.663 INFO 4 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Unregistering JMX-exposed beans on shutdown
2018-06-22 18:28:09.690 INFO 4 --- [ main] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default'
State changed from up to crashed
Process exited with status 1
Sorry about the timestamps by the way, if anyone knows a service that formats stacktrace's feel free to share in the comments.
The beginning of the stacktrace says ERROR: relation "category" does not exist which makes me believe it has something to do with my Product.java and Category.java classes as they have a #ManyToOne and #OneToMany(mappedBy = "category") relationship.
Category.java
package org.wecancodeit.pantryplus.category;
import static java.util.Arrays.asList;
import static javax.persistence.GenerationType.IDENTITY;
import java.util.Collection;
import java.util.HashSet;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.OneToMany;
import org.wecancodeit.pantryplus.product.Product;
#Entity
public class Category {
#Id
#GeneratedValue(strategy = IDENTITY)
private long id;
private String name;
#OneToMany(mappedBy = "category")
private Collection<Product> products;
#SuppressWarnings("unused")
private Category() {
}
public Category(String name, Product... products) {
this.name = name;
this.products = new HashSet<Product>(asList(products));
}
public long getId() {
return id;
}
public String getName() {
return name;
}
public Collection<Product> getProducts() {
return products;
}
}
Product.java
package org.wecancodeit.pantryplus.product;
import static javax.persistence.GenerationType.IDENTITY;
import java.util.Collection;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.ManyToOne;
import javax.persistence.OneToMany;
import org.wecancodeit.pantryplus.category.Category;
import org.wecancodeit.pantryplus.lineitem.LineItem;
import com.fasterxml.jackson.annotation.JsonIgnore;
#Entity
public class Product {
#Id
#GeneratedValue(strategy = IDENTITY)
private long id;
private String name;
private String image;
#JsonIgnore
#ManyToOne
private Category category;
#JsonIgnore
#OneToMany(mappedBy = "product")
private Collection<LineItem> lineItem;
public Product() {
}
public Product(String name, Category category) {
this.name = name;
this.category = category;
}
public Product(String name, Category category, String image) {
this.name = name;
this.category = category;
this.image = image;
}
public long getId() {
return id;
}
public String getImage() {
return image;
}
public String getName() {
return name;
}
#Override
public int hashCode() {
return ((Long) id).hashCode();
}
#Override
public boolean equals(Object obj) {
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
if (id == ((Product) obj).id) {
return true;
}
return false;
}
public Category getCategory() {
return category;
}
}
build.gradle
buildscript {
ext {
springBootVersion = '1.5.10.RELEASE'
}
repositories {
mavenCentral()
}
dependencies {
classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
}
}
plugins {
id 'net.saliman.cobertura' version '2.3.1'
id 'com.github.kt3k.coveralls' version '2.8.2'
id 'com.craigburke.karma' version '1.4.4'
}
cobertura.coverageFormats = ['html', 'xml']
apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'org.springframework.boot'
karma {
frameworks = ['jasmine']
browsers = [
'Chrome'
]
files = [
"src/test/js/*spec.js",
"src/main/resources/static/js/*.js"
]
}
group = 'org.wecancodeit'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = 1.8
repositories {
mavenCentral()
}
test {
environment "JDBC_DATABASE_URL", "" //I don't know how this empty quote is working but it works just as well as 'jdbc:h2:~/test' for some reason
}
dependencies {
compile('org.springframework.boot:spring-boot-starter-data-jpa')
compile('org.springframework.boot:spring-boot-starter-thymeleaf')
compile('org.springframework.boot:spring-boot-starter-web')
compile('org.springframework.boot:spring-boot-starter-mail')
compile('org.springframework.data:spring-data-rest-hal-browser')
runtime('org.springframework.boot:spring-boot-devtools')
runtime('org.postgresql:postgresql')
testCompile('com.h2database:h2')
testCompile('org.springframework.boot:spring-boot-starter-test')
}
I've been stuck at this for a couple weeks now, I've even been able to build websites after this from the ground up that worked with postgres on Heroku but not this one. I wouldn't be surprised if this was an issue with whitespace.
Edit:
Here's my application.properties file:
spring.datasource.url=${JDBC_DATABASE_URL}
spring.mail.host=smtp.gmail.com
spring.mail.port=587
spring.mail.username=${SPRING_MAIL_USERNAME}
spring.mail.password=${SPRING_MAIL_PASSWORD}
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.starttls.required=true
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.connectiontimeout=5000
spring.mail.properties.mail.smtp.timeout=5000
spring.mail.properties.mail.smtp.writetimeout=5000
Edit 2:
I've hit my character limit so I can't add the full Heroku logs but I've uploaded them to google drive at: https://drive.google.com/file/d/1668kZuNsDWuiVQMvP4waFBs_sU9xvrWO/view?usp=sharing

Have you properly configured schema in your properties file ?
According to heroku docs:
Notice the additional ql at the end of jdbc:postgresql? Due to this difference you will need to hardcode the scheme to jdbc:postgresql in your Java class or your Spring XML configuration.(link)

One of my table names was user, this is a Postgres keyword and after I changed this and completely rewrote this project in Spring Boot 2 I was able to get this working. Here's a list of postgres keywords: https://www.postgresql.org/docs/current/static/sql-keywords-appendix.html

Spring remoting proxy injection to a spring defined FXMLController in initialization throws NoSuchBeanDefinitionException

As the title says, i have a server application which defines a RmiServiceExporter like this:
#Bean
RmiServiceExporter exporter() {
Class<Service> serviceInterface = Service.class;
RmiServiceExporter exporter = new RmiServiceExporter();
exporter.setServiceInterface(serviceInterface);
exporter.setService(service());
exporter.setServiceName("Service");//serviceInterface.getSimpleName());
exporter.setRegistryPort(1099);
return exporter;
}
and a client application, in which i have a spring configured loginScene and the RmiProxyFactoryBean.
This is the Client Spring configuration:
#Configuration
public class ClientConfig {
#Bean
public Stage primaryStage() {
return new Stage();
}
#Bean
RmiProxyFactoryBean service() {
RmiProxyFactoryBean rmiProxyFactory = new RmiProxyFactoryBean();
rmiProxyFactory.setServiceUrl("rmi://127.0.0.1:1099/Service");
rmiProxyFactory.setServiceInterface(Service.class);
return rmiProxyFactory;
}
#Bean
public Scene loginScene(){
final FXMLLoader loader = new FXMLLoader(getClass().getResource("/FXMLs/LoginFXML.fxml"));
try {
return new Scene(loader.load());
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
}
In the LoginController, i have an initialization method, which tries to get the service bean from the ApplicationContext, but instead NoSuchBeanDefinitionException is thrown.
Here is the LoginController:
#Data
public class LoginController {
private ApplicationContext factory;
private Service service;
#FXML private TextField textfield_username;
#FXML private PasswordField textfield_password;
#FXML
public void initialize(){
factory = new AnnotationConfigApplicationContext("Configurations.ClientConfig");
service = (Service) factory.getBean("service");
}
#FXML
private void textUsernameKeypressed(KeyEvent keyEvent) {
onEnterLogin(keyEvent);
}
#FXML
private void textPasswordKeypressed(KeyEvent keyEvent) {
onEnterLogin(keyEvent);
}
#FXML
private void buttonKeypressed(KeyEvent keyEvent) {
onEnterLogin(keyEvent);
}
private void onEnterLogin(KeyEvent keyEvent){
if (keyEvent.getCode().equals(KeyCode.ENTER))
login();
}
#FXML
private void loginButtonPressed(ActionEvent actionEvent) {
login();
}
private void login(){
try {
service.login(textfield_username.getText(), textfield_password.getText());
Alert alert = new Alert(Alert.AlertType.INFORMATION);
alert.setContentText("Login succesfull");
alert.show();
} catch (ServiceException e) {
Alert alert = new Alert(Alert.AlertType.INFORMATION);
alert.setContentText("Login failed: " + e.getMessage());
alert.show();
}
}
}
And here is the exception stacktrace:
/usr/lib/jvm/java-8-openjdk/bin/java -javaagent:/opt/intellij-idea-ultimate-edition/lib/idea_rt.jar=38303:/opt/intellij-idea-ultimate-edition/bin -Dfile.encoding=UTF-8 -classpath /usr/lib/jvm/java-8-openjdk/jre/lib/charsets.jar:/usr/lib/jvm/java-8-openjdk/jre/lib/ext/cldrdata.jar:/usr/lib/jvm/java-8-openjdk/jre/lib/ext/dnsns.jar:/usr/lib/jvm/java-8-openjdk/jre/lib/ext/jaccess.jar:/usr/lib/jvm/java-8-openjdk/jre/lib/ext/jfxrt.jar:/usr/lib/jvm/java-8-openjdk/jre/lib/ext/localedata.jar:/usr/lib/jvm/java-8-openjdk/jre/lib/ext/nashorn.jar:/usr/lib/jvm/java-8-openjdk/jre/lib/ext/sunec.jar:/usr/lib/jvm/java-8-openjdk/jre/lib/ext/sunjce_provider.jar:/usr/lib/jvm/java-8-openjdk/jre/lib/ext/sunpkcs11.jar:/usr/lib/jvm/java-8-openjdk/jre/lib/ext/zipfs.jar:/usr/lib/jvm/java-8-openjdk/jre/lib/jce.jar:/usr/lib/jvm/java-8-openjdk/jre/lib/jfxswt.jar:/usr/lib/jvm/java-8-openjdk/jre/lib/jsse.jar:/usr/lib/jvm/java-8-openjdk/jre/lib/management-agent.jar:/usr/lib/jvm/java-8-openjdk/jre/lib/resources.jar:/usr/lib/jvm/java-8-openjdk/jre/lib/rt.jar:/home/bobby/Faculta/CurseAutobuze/Client/out/production/classes:/home/bobby/Faculta/CurseAutobuze/Client/out/production/resources:/home/bobby/Faculta/CurseAutobuze/Common/out/production/classes:/home/bobby/.gradle/caches/modules-2/files-2.1/org.projectlombok/lombok/1.16.18/557d13dcb647038dc687390711ccb5c9b3ffbd60/lombok-1.16.18.jar:/home/bobby/.gradle/caches/modules-2/files-2.1/org.springframework.data/spring-data-jpa/2.0.5.RELEASE/51b2e315174e32b4c8a4841a147002555add076c/spring-data-jpa-2.0.5.RELEASE.jar:/home/bobby/.gradle/caches/modules-2/files-2.1/org.hibernate/hibernate-core/5.2.13.Final/830492a74b3013ef75135ea4120b2ac23fa7ad9f/hibernate-core-5.2.13.Final.jar:/home/bobby/.gradle/caches/modules-2/files-2.1/org.hibernate/hibernate-validator/6.0.7.Final/9e923bb3f45e7e4c7555677f0aab7953d4ea1251/hibernate-validator-6.0.7.Final.jar:/home/bobby/.gradle/caches/modules-2/files-2.1/org.postgresql/postgresql/42.2.1/b7f61848ac43ae9fa6e38935bfd75628b7fc9086/postgresql-42.2.1.jar:/home/bobby/.gradle/caches/modules-2/files-2.1/org.springframework.data/spring-data-commons/2.0.5.RELEASE/f5357c650f63f3a187d3d4086a9e9132f33851a6/spring-data-commons-2.0.5.RELEASE.jar:/home/bobby/.gradle/caches/modules-2/files-2.1/org.springframework/spring-orm/5.0.4.RELEASE/dc83e08ecdb4ab28339f87358b53d75b4a8d1b9/spring-orm-5.0.4.RELEASE.jar:/home/bobby/.gradle/caches/modules-2/files-2.1/org.springframework/spring-context/5.0.4.RELEASE/3e76d08c851113077642c5704f0f94d5ce58e905/spring-context-5.0.4.RELEASE.jar:/home/bobby/.gradle/caches/modules-2/files-2.1/org.springframework/spring-aop/5.0.4.RELEASE/f8e029e54c0267dadb6b9f713f3feb54ec4f3a0e/spring-aop-5.0.4.RELEASE.jar:/home/bobby/.gradle/caches/modules-2/files-2.1/org.springframework/spring-jdbc/5.0.4.RELEASE/6b5ac0db11d81d6319ebd0bb253b2f01713df3ab/spring-jdbc-5.0.4.RELEASE.jar:/home/bobby/.gradle/caches/modules-2/files-2.1/org.springframework/spring-tx/5.0.4.RELEASE/7afc193c5d2b812ee6d2ccaf6fcc81fb83bfb4a7/spring-tx-5.0.4.RELEASE.jar:/home/bobby/.gradle/caches/modules-2/files-2.1/org.springframework/spring-beans/5.0.4.RELEASE/7a8c3d48d4c33621e64d1399721d8e067450fcbd/spring-beans-5.0.4.RELEASE.jar:/home/bobby/.gradle/caches/modules-2/files-2.1/org.springframework/spring-expression/5.0.4.RELEASE/4bda161f2e34c1486f2527a23eb47293567f473c/spring-expression-5.0.4.RELEASE.jar:/home/bobby/.gradle/caches/modules-2/files-2.1/org.springframework/spring-core/5.0.4.RELEASE/2221a957b5561a34f044350ba4e30ef5870254a3/spring-core-5.0.4.RELEASE.jar:/home/bobby/.gradle/caches/modules-2/files-2.1/org.aspectj/aspectjrt/1.8.12/afaa5bdae313ed3ea119eb26c8848fca21e8b04e/aspectjrt-1.8.12.jar:/home/bobby/.gradle/caches/modules-2/files-2.1/org.slf4j/slf4j-api/1.7.25/da76ca59f6a57ee3102f8f9bd9cee742973efa8a/slf4j-api-1.7.25.jar:/home/bobby/.gradle/caches/modules-2/files-2.1/org.hibernate.common/hibernate-commons-annotations/5.0.1.Final/71e1cff3fcb20d3b3af4f3363c3ddb24d33c6879/hibernate-commons-annotations-5.0.1.Final.jar:/home/bobby/.gradle/caches/modules-2/files-2.1/org.hibernate.validator/hibernate-validator/6.0.7.Final/8b9d9c7ec8c73963ea0fe81912fc67711a4ef76/hibernate-validator-6.0.7.Final.jar:/home/bobby/.gradle/caches/modules-2/files-2.1/org.jboss.logging/jboss-logging/3.3.1.Final/c46217ab74b532568c0ed31dc599db3048bd1b67/jboss-logging-3.3.1.Final.jar:/home/bobby/.gradle/caches/modules-2/files-2.1/org.hibernate.javax.persistence/hibernate-jpa-2.1-api/1.0.0.Final/5e731d961297e5a07290bfaf3db1fbc8bbbf405a/hibernate-jpa-2.1-api-1.0.0.Final.jar:/home/bobby/.gradle/caches/modules-2/files-2.1/org.javassist/javassist/3.22.0-GA/3e83394258ae2089be7219b971ec21a8288528ad/javassist-3.22.0-GA.jar:/home/bobby/.gradle/caches/modules-2/files-2.1/antlr/antlr/2.7.7/83cd2cd674a217ade95a4bb83a8a14f351f48bd0/antlr-2.7.7.jar:/home/bobby/.gradle/caches/modules-2/files-2.1/org.jboss.spec.javax.transaction/jboss-transaction-api_1.2_spec/1.0.1.Final/4441f144a2a1f46ed48fcc6b476a4b6295e6d524/jboss-transaction-api_1.2_spec-1.0.1.Final.jar:/home/bobby/.gradle/caches/modules-2/files-2.1/org.jboss/jandex/2.0.3.Final/bfc4d6257dbff7a33a357f0de116be6ff951d849/jandex-2.0.3.Final.jar:/home/bobby/.gradle/caches/modules-2/files-2.1/com.fasterxml/classmate/1.3.1/2ad2fd09dcf5607ca96f8ef432096a96986c40a/classmate-1.3.1.jar:/home/bobby/.gradle/caches/modules-2/files-2.1/dom4j/dom4j/1.6.1/5d3ccc056b6f056dbf0dddfdf43894b9065a8f94/dom4j-1.6.1.jar:/home/bobby/.gradle/caches/modules-2/files-2.1/org.springframework/spring-jcl/5.0.4.RELEASE/3053e2bad0a18571bdbb9596ce51f9d458f5934f/spring-jcl-5.0.4.RELEASE.jar:/home/bobby/.gradle/caches/modules-2/files-2.1/javax.validation/validation-api/2.0.1.Final/cb855558e6271b1b32e716d24cb85c7f583ce09e/validation-api-2.0.1.Final.jar Main
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
javafx.fxml.LoadException:
/home/bobby/Faculta/CurseAutobuze/Client/out/production/resources/FXMLs/LoginFXML.fxml
at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2601)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2571)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2409)
at Configurations.ClientConfig.loginScene(ClientConfig.java:32)
at Configurations.ClientConfig$$EnhancerBySpringCGLIB$$5da32339.CGLIB$loginScene$2(<generated>)
at Configurations.ClientConfig$$EnhancerBySpringCGLIB$$5da32339$$FastClassBySpringCGLIB$$e0e4f3e3.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:361)
at Configurations.ClientConfig$$EnhancerBySpringCGLIB$$5da32339.loginScene(<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.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154)
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:579)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1250)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1099)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:502)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:312)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:760)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:868)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549)
at org.springframework.context.annotation.AnnotationConfigApplicationContext.<init>(AnnotationConfigApplicationContext.java:88)
at Main.start(Main.java:16)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$8(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$7(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null$5(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$6(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
at com.sun.glass.ui.gtk.GtkApplication.lambda$null$5(GtkApplication.java:139)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.reflect.InvocationTargetException
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 sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71)
at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2566)
... 36 more
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'service' available
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:686)
at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedLocalBeanDefinition(AbstractBeanFactory.java:1205)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1085)
at Controllers.LoginController.initialize(LoginController.java:28)
... 46 more
Exception in Application start method
java.lang.reflect.InvocationTargetException
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 com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:389)
at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328)
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 sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:767)
Caused by: java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$1(LauncherImpl.java:182)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.ClassCastException: org.springframework.beans.factory.support.NullBean cannot be cast to javafx.scene.Scene
at Main.start(Main.java:19)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$8(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$7(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null$5(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$6(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
at com.sun.glass.ui.gtk.GtkApplication.lambda$null$5(GtkApplication.java:139)
... 1 more
Exception running application Main
Process finished with exit code 1

I solved the problem here was the problem:
#FXML
public void initialize(){
factory = new AnnotationConfigApplicationContext("Configurations.ClientConfig");
service = (Service) factory.getBean("service");
}
it should've been:
#FXML
public void initialize(){
factory = new AnnotationConfigApplicationContext(ClientConfig.class);
service = (Service) factory.getBean("service");
}

NullPointerException when Inserting Data using ManyToMany in SpringBoot Application [duplicate]

This question already has answers here:
What is a NullPointerException, and how do I fix it?
(12 answers)
Closed 5 years ago.
I have tried all I could but I keep getting NullPointerException Error.
I have two Spring boot entities that have been mapped together using ManyToMany mapping. These Entities are fine as all the tables are created.
However, when I try to insert data, I get a NullPointerException.
Can someone please point me to what I am doing wrong?
Below is the code that I'm using to insert the data:
import com.ait.aiadmin.model.Cluster;
import com.ait.aiadmin.model.Subscriber;
import com.ait.aiadmin.repository.ClusterRepository;
import com.ait.aiadmin.repository.SubscriberRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.stereotype.Component;
import javax.transaction.Transactional;
#SpringBootApplication
public class AiAdminApplication {
public static void main(String[] args) {
SpringApplication.run(AiAdminApplication.class, args);
/*ApplicationContext ctx = SpringApplication.run(AiAdminApplication.class, args);
String [] beanNames = ctx.getBeanDefinitionNames();
Arrays.sort(beanNames);
for (String name: beanNames){
System.out.println(name);
}*/
}
#Component
public class DatabaseLoader implements CommandLineRunner {
private final SubscriberRepository subscriberRepository;
private final ClusterRepository clusterRepository;
#Autowired
public DatabaseLoader(SubscriberRepository subscriberRepository, ClusterRepository clusterRepository) {
this.subscriberRepository = subscriberRepository;
this.clusterRepository = clusterRepository;
}
#Override
#Transactional
public void run (String...strings) throws Exception {
Subscriber subscriber1 = new Subscriber("Olalekan Samuel", "Ogunleye", "olalekan#gmail.com");
Cluster cluster1 = new Cluster("Aws-eu-west-1", "Ireland", "123.98.45", "Olalekan Samuel");
subscriber1.clusters.add(cluster1);
this.subscriberRepository.save(subscriber1);
this.clusterRepository.save(cluster1);
}
}
And below is the error that I am getting
java.lang.IllegalStateException: Failed to execute CommandLineRunner
at
org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:735)
[spring-boot-1.5.8.RELEASE.jar:1.5.8.RELEASE] at
org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:716)
[spring-boot-1.5.8.RELEASE.jar:1.5.8.RELEASE] at
org.springframework.boot.SpringApplication.afterRefresh(SpringApplication.java:703)
[spring-boot-1.5.8.RELEASE.jar:1.5.8.RELEASE] at
org.springframework.boot.SpringApplication.run(SpringApplication.java:304)
[spring-boot-1.5.8.RELEASE.jar:1.5.8.RELEASE] at
org.springframework.boot.SpringApplication.run(SpringApplication.java:1118)
[spring-boot-1.5.8.RELEASE.jar:1.5.8.RELEASE] at
org.springframework.boot.SpringApplication.run(SpringApplication.java:1107)
[spring-boot-1.5.8.RELEASE.jar:1.5.8.RELEASE] at
com.ait.aiadmin.AiAdminApplication.main(AiAdminApplication.java:19)
[classes/:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
Method) ~[na:1.8.0_152] at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
~[na:1.8.0_152] at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
~[na:1.8.0_152] at java.lang.reflect.Method.invoke(Method.java:498)
~[na:1.8.0_152] at
org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)
[spring-boot-devtools-1.5.8.RELEASE.jar:1.5.8.RELEASE] Caused by:
java.lang.NullPointerException: null at
com.ait.aiadmin.AiAdminApplication$DatabaseLoader.run(AiAdminApplication.java:73)
~[classes/:na] at
com.ait.aiadmin.AiAdminApplication$DatabaseLoader$$FastClassBySpringCGLIB$$d20028d3.invoke()
~[classes/:na] at
org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
~[spring-core-4.3.12.RELEASE.jar:4.3.12.RELEASE] at
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:738)
~[spring-aop-4.3.12.RELEASE.jar:4.3.12.RELEASE] at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
~[spring-aop-4.3.12.RELEASE.jar:4.3.12.RELEASE] at
org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
~[spring-tx-4.3.12.RELEASE.jar:4.3.12.RELEASE] at
org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:282)
~[spring-tx-4.3.12.RELEASE.jar:4.3.12.RELEASE] at
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
~[spring-tx-4.3.12.RELEASE.jar:4.3.12.RELEASE] at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
~[spring-aop-4.3.12.RELEASE.jar:4.3.12.RELEASE] at
org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:673)
~[spring-aop-4.3.12.RELEASE.jar:4.3.12.RELEASE] at
com.ait.aiadmin.AiAdminApplication$DatabaseLoader$$EnhancerBySpringCGLIB$$6e72d57b.run()
~[classes/:na] at
org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:732)
[spring-boot-1.5.8.RELEASE.jar:1.5.8.RELEASE] ... 11 common frames
omitted

I don't know your code for the Subscriber, but I would guess the NPE occurs, because subscriber1.clusters is not initialized. Make sure that all Collections in your entities are created correctly.
In my applications I often use the getter for a collection to initialize it, if it does not exist, e.g.:
public List<Something> getSomethings() {
if (somethings == null) {
somethings = new ArrayList<>();
}
return somethings;
}