I run the following commands:
1) sls create --template aws-java-maven
2) mvn clean install
3) sls invoke local -f hello
I got this error:
Serverless: In order to get human-readable output, please implement "toString()" method of your "ApiGatewayResponse" object.
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.serverless.InvokeBridge.invoke(InvokeBridge.java:95)
at com.serverless.InvokeBridge.<init>(InvokeBridge.java:39)
at com.serverless.InvokeBridge.main(InvokeBridge.java:150)
Caused by: java.lang.NoSuchMethodError: com.amazonaws.services.lambda.runtime.LambdaLogger.log([B)V
at com.amazonaws.services.lambda.runtime.log4j2.LambdaAppender.append(LambdaAppender.java:74)
at org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:156)
at org.apache.logging.log4j.core.config.AppenderControl.callAppender0(AppenderControl.java:129)
at org.apache.logging.log4j.core.config.AppenderControl.callAppenderPreventRecursion(AppenderControl.java:120)
at org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:84)
at org.apache.logging.log4j.core.config.LoggerConfig.callAppenders(LoggerConfig.java:448)
at org.apache.logging.log4j.core.config.LoggerConfig.processLogEvent(LoggerConfig.java:433)
at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:417)
at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:403)
at org.apache.logging.log4j.core.config.AwaitCompletionReliabilityStrategy.log(AwaitCompletionReliabilityStrategy.java:63)
at org.apache.logging.log4j.core.Logger.logMessage(Logger.java:146)
at org.apache.logging.log4j.spi.AbstractLogger.logMessageSafely(AbstractLogger.java:2091)
at org.apache.logging.log4j.spi.AbstractLogger.logMessage(AbstractLogger.java:2005)
at org.apache.logging.log4j.spi.AbstractLogger.logIfEnabled(AbstractLogger.java:1876)
at org.apache.logging.log4j.spi.AbstractLogger.info(AbstractLogger.java:1421)
at com.serverless.Handler.handleRequest(Handler.java:18)
... 7 more
Adding both log4j and log4j2 with version 1.0.0 (decreased from 1.1.0) helped ...
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-lambda-java-log4j</artifactId>
<version>1.0.0</version>
</dependency>
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-lambda-java-log4j2</artifactId>
<version>1.0.0</version>
</dependency>
It seems you are missing some runtime logger dependencies. Try adding these to your pom file
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-lambda-java-log4j2</artifactId>
<version>1.1.0</version>
</dependency>
Also, you need to make sure that you are using the compatible version of Java AWS SDK, which is generally the same version number.Something like this
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-lambda-java-log4j</artifactId>
<version>1.0.0</version>
</dependency>
This also work for me....
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-lambda-java-log4j2</artifactId>
<version>1.1.0</version>
</dependency>
In java file add below lines.
LambdaLogger logger = context.getLogger();
logger.log("received: " +input.toString());
Related
Can someone help me with this? I am doing a Spring framework TwitterCLI java project and having issues when I try to run it. I am not sure if I ran it correctly, I searched online which states that NoClassDefFoundError only happens when you leave out a dependency. However I am pretty sure I have the correct jackson-core dependency in my POM file.
The errors shown:
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.NoClassDefFoundError: com/fasterxml/jackson/core/JsonProcessingException
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
at java.lang.Class.privateGetMethodRecursive(Class.java:3048)
at java.lang.Class.getMethod0(Class.java:3018)
at java.lang.Class.getMethod(Class.java:1784)
at sun.launcher.LauncherHelper.validateMainClass(LauncherHelper.java:650)
at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:632)
Caused by: java.lang.ClassNotFoundException: com.fasterxml.jackson.core.JsonProcessingException
at java.net.URLClassLoader.findClass(URLClassLoader.java:387)
at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352)
at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
... 7 more
My pom file dependencies:
<dependencies>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.28</version>
</dependency>
<!--oauth 1.0 and httpclient4-->
<dependency>
<groupId>oauth.signpost</groupId>
<artifactId>signpost-commonshttp4</artifactId>
<version>1.2.1.2</version>
</dependency>
<!--Jackson JSON-->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>${jackson.version}</version>
</dependency>
<!--testing-->
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-core</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
<!--spring-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
I tried
mvn clean compile package
which built successfully, but after I tried to run
java -classpath target/test-classes ca.jrvs.apps.twitter.TwitterCLIApp post "hahaha" "42.98693964646016:-81.31011004242582"
it gave me the above error for
<jackson.version>2.14.0</jackson.version>
I also tried versions 2.7.3, 2.12.0 or 2.14.0, didn't work for all.
I might run the app in a wrong way so I run the app as suggested:
mvn spring-boot:run, but now it gave me the error for my main class:
java.lang.ClassNotFoundException: ca.jrvs.apps.twitter.TwitterCLIApp
at java.net.URLClassLoader.findClass (URLClassLoader.java:387)
at java.lang.ClassLoader.loadClass (ClassLoader.java:418)
at java.lang.ClassLoader.loadClass (ClassLoader.java:351)
at org.springframework.boot.maven.AbstractRunMojo$LaunchRunner.run (AbstractRunMojo.java:553)
at java.lang.Thread.run (Thread.java:750)
I suspect that the problems are with the way that you are running the command:
java -classpath target/test-classes ca.jrvs.apps.twitter.TwitterCLIApp \
post "hahaha" "42.98693964646016:-81.31011004242582"
First of all, the target/test-classes subtree will contain only classes in your project's test/java tree. Your application classes will be in the target/classes subtree .
Second, the target tree doesn't include the dependency JARs.
So when you run the command like that, you don't have any of your dependencies ... or even the application itself ... on the runtime classpath.
So what is the correct way to deal with this?
It depends what you are trying to do.
If you simply want to run the tests:
mvn test
If you want run the application via one of the main entry-point methods:
mvn exec:java -Dexec.mainClass=<class-fqn> -Dexec.args="arg1 arg2 arg3"
For a spring-boot application, it is even simpler:
mvn spring-boot:run
If you would prefer to run the application without using mvn as a (umm) launcher you could:
Generate the a classpath file with:
mvn dependency:build-classpath -DoutputFile=cp.txt
as described in https://stackoverflow.com/a/5261456/139985 to create a file containing the classpath. Then user the file like this:
java -classpath #cp.txt <class-fqn> <arg> ...
Use appassembler-maven-plugin or similar to generate a launcher shell script.
For spring-boot, I understand that mvn can build an executable JAR file for the project which contains all of the dependencies. You can run that JAR file like this:
java -jar my-project.jar <arg> ...
I am trying to score a model from pmml file using pmml4s library. Every time I submit the job in Spark I get the following error:
20/05/13 23:30:10 ERROR SparkSubmit: org.apache.spark.sql.types.StructType.names().
[Ljava/lang/String;
java.lang.NoSuchMethodError: org.apache.spark.sql.types.StructType.names().
[Ljava/lang/String;
at org.pmml4s.spark.ScoreModel.transform(ScoreModel.scala:56)
at com.aexp.JavaPMML.main(JavaPMML.java:24)
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.spark.deploy.JavaMainApplication.start(SparkApplication.scala:52)
Following is my code sample:
ScoreModel model = ScoreModel.fromFile(args[0]);
SparkConf conf = new SparkConf();
SparkSession spark = SparkSession.builder().config(conf).getOrCreate();
Dataset<?> df = spark.read().format("csv")
.option("header", "true")
.option("inferSchema", "true")
.load(args[1]);
Dataset<?> scoreDf = model.transform(df);
Following is the pom file that I am using:
<dependencies>
<dependency>
<groupId>org.pmml4s</groupId>
<artifactId>pmml4s-spark_2.11</artifactId>
<version>0.9.1</version>
</dependency>
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-sql_2.11</artifactId>
<version>2.3.2</version>
</dependency>
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-core_2.11</artifactId>
<version>2.3.2</version>
</dependency>
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-mllib_2.11</artifactId>
<version>2.3.2</version>
</dependency>
</dependencies>
I have edited my pom file and made the spark version similar still I face the same issue. When I am using Scala, I am facing the same problem. Is there any dependency that I am missing?
Try to use same version of spark libraries. If spark versions are not matching we will be getting NoSuchMethodError issue in many places as those methods might have modified or removed in latest versions.
The error is caused by the PMML4S-Spark used the method names of StructType, which is introduced since Spark 2.4. Now it has been fixed in the latest PMML4S-Spark 0.9.5. Please, update your pom file to use the new version:
<dependency>
<groupId>org.pmml4s</groupId>
<artifactId>pmml4s-spark_2.11</artifactId>
<version>0.9.5</version>
</dependency>
I need your help. I'm just getting used to Java and have finished my first milestone in my private project. Now I wanted to use this milestone as an opportunity to deal with Jenkins and CI.
However, I run into problems when running the program via Maven in Jenkins. Maven always throws me a ClassNotFound exception when processing the Jenkins pipeline. But when I start the program locally in IntelliJ it runs without problems.
As far as I can see he can't find a POJO which I use for parsing XML using JAXB.
Why doesn't it find a class when I build using Jenkins but finds everything when I work locally, the POM is the same.
This is my POM:
<groupId>groupId</groupId>
<artifactId>rss_backend</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<maven.compiler.source>11</maven.compiler.source>
<maven.compiler.target>11</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.12</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.2.11</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>2.2.11</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-core</artifactId>
<version>2.2.11</version>
</dependency>
<dependency>
<groupId>javax.activation</groupId>
<artifactId>activation</artifactId>
<version>1.1.1</version>
</dependency>
<dependency>
<groupId>dev.morphia.morphia</groupId>
<artifactId>core</artifactId>
<version>1.5.8</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<!-- Build an executable JAR -->
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>3.0.2</version>
<configuration>
<archive>
<manifest>
<mainClass>projects.rss_backend.MainApp</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
</plugins>
</build>
and this is the error i get when using jenkins/maven:
The following command runs and outputs the execution of your Java
application (which Jenkins built using Maven) to the Jenkins UI.
+ java -jar target/rss_backend-1.0-SNAPSHOT.jar
Exception in thread "main" java.lang.NoClassDefFoundError: javax/xml/bind/JAXBException
at projects.rss_backend.MainApp.main(MainApp.java:20)
Caused by: java.lang.ClassNotFoundException: javax.xml.bind.JAXBException
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
... 1 more```
Do you have a clue what I'm doing wrong or how I can fix the problem?
Normal jars do not contain dependencies.
You need to build an executable jar as described here: How can I create an executable JAR with dependencies using Maven?
Probably you did not start the jar from IntelliJ with java -jar but with some IntelliJ mechanism that did the magic (i.e. the classpath) for you.
I would suggest to upgrade your jaxb deps: The following are working for me in JDK11+:
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>2.4.0-b180830.0438</version>
</dependency>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.4.0-b180830.0359</version>
</dependency>
<dependency>
<groupId>org.glassfish.jaxb</groupId>
<artifactId>jaxb-runtime</artifactId>
<version>2.4.0-b180830.0438</version>
</dependency>
As far as I can see, you are using Java 11, which means modules exist.
Did you declare your own module (create a module-info.java in your source folder)?
Most cases above Java 8 where I have seen a ClassNotFoundException, there was a module dependency missing. And that means that you cannot interact with whatever you are trying to do.
I am not familiar with Jenkins, however I assume that either
- your project requires something from Jenkins
or
- Jenkins tries to interact with something from your project via Reflection (e.g. building an object from a database).
In the first case, in your module-info.java, you would write
requires (transitive) jenkins-module-you-want-to-add ;
in the second case you would write
opens your-data-package to jenkins-module-that-needs-access ;
That is in my opinion the most likely source of the ClassNotFoundException you are receiving.
Anyhow, there is also the chance that maven is the source of your problem.
I have a Flink Cluster with Yarn, use the flink-quickstart-java Archetype to build a demo project. After building a fat-jar with 'mvn clean package -Pbuild-jar' command, and submit the program with 'flink run -m yarn-cluster -yn 2 ./flink-SNAPSHOT-1.0.jar', the program throw the following exception:
java.lang.NoClassDefFoundError:
java.lang.NoClassDefFoundError: org/apache/kafka/common/serialization/ByteArrayDeserializer
at org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumer09.setDeserializer(FlinkKafkaConsumer09.java:290)
at org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumer09.(FlinkKafkaConsumer09.java:216)
at org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumer09.(FlinkKafkaConsumer09.java:154)
at org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumer010.(FlinkKafkaConsumer010.java:128)
at org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumer010.(FlinkKafkaConsumer010.java:112)
at org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumer010.(FlinkKafkaConsumer010.java:79)
at stream.TransferKafka.main(TransferKafka.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.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:525)
at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:417)
at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:395)
at org.apache.flink.client.CliFrontend.executeProgram(CliFrontend.java:828)
at org.apache.flink.client.CliFrontend.run(CliFrontend.java:283)
at org.apache.flink.client.CliFrontend.parseParameters(CliFrontend.java:1080)
at org.apache.flink.client.CliFrontend$1.call(CliFrontend.java:1127)
at org.apache.flink.client.CliFrontend$1.call(CliFrontend.java:1124)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1781)
at org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41)
at org.apache.flink.client.CliFrontend.main(CliFrontend.java:1124)
Caused by: java.lang.ClassNotFoundException: org.apache.kafka.common.serialization.ByteArrayDeserializer
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 24 more
And Here is my demo:
public static void main(String[] args) {
final StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
Properties props = new Properties();
props.setProperty("bootstrap.servers", "ip:port");
props.setProperty("group.id", "NewFlinkTest");
DataStreamSource < String > stream = env.addSource(new FlinkKafkaConsumer010 < > ("kafka_test", new SimpleStringSchema(), props));
stream.addSink(new FlinkKafkaProducer010 < > ("kafka_test_out", new SimpleStringSchema(), props));
try {
env.execute("Flink Jar Test");
} catch (Exception e) {
e.printStackTrace();
}
}
And some version information:
FLink Version: 1.4.0
Hadoop Version: 2.7.2
Kafka Version: 0.10.2.1
JDK Version: 1.8
Pom dependencies
Edit1:
<?xml version="1.0" encoding="UTF-8"?>
<dependencies>
<!-- Apache Flink dependencies -->
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-core</artifactId>
<version>${flink.version}</version>
</dependency>
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-java</artifactId>
<version>${flink.version}</version>
</dependency>
<dependency>
<!-- This dependency is required to actually execute jobs. It is currently pulled in by flink-streaming-java, but we explicitly depend on it to safeguard against future changes. -->
<groupId>org.apache.flink</groupId>
<artifactId>flink-clients_${scala.binary.version}</artifactId>
<version>${flink.version}</version>
</dependency>
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-streaming-java_${scala.binary.version}</artifactId>
<version>${flink.version}</version>
</dependency>
<!-- explicitly add a standard logging framework, as Flink does not have a hard dependency on one specific framework by default -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-connector-rabbitmq_2.11</artifactId>
<version>1.4.0</version>
</dependency>
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-connector-kafka-0.10_${scala.binary.version}</artifactId>
<version>1.4.0</version>
</dependency>
</dependencies>
After some attempts, I find the code throws exception is not the same jar that I packed into my uber-jar. I think the main reason is the client server has older version of the flink-connector-kafka jar, but no matter how I set the config yaml property 'yarn.per-job-cluster.include-user-jar', the program always throws the same exception.
Edit2:
After add kafka-clients:0.10.2.1 to flink_home/lib/, it works. But still don't know the reason why it doesn't read class file in uber jar.
First, you may verify if the missing class is in your jar file by grep 'ByteArrayDeserializer' ./flink-SNAPSHOT-1.0.jar.
You probably want to add <scope>provided</scope> to flink-streaming-scala, flink-clients, link-table-api-scala-bridge and flink-table-planner-blink - that solves my problem
This question already has answers here:
Why am I getting a NoClassDefFoundError in Java?
(31 answers)
Closed 6 years ago.
I am trying to learn spring. So I typed up this project but on running it it gives me this error
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
at org.springframework.context.support.AbstractApplicationContext.<init>(AbstractApplicationContext.java:145)
at org.springframework.context.support.AbstractRefreshableApplicationContext.<init>(AbstractRefreshableApplicationContext.java:84)
at org.springframework.context.support.AbstractRefreshableConfigApplicationContext.<init>(AbstractRefreshableConfigApplicationContext.java:59)
at org.springframework.context.support.AbstractXmlApplicationContext.<init>(AbstractXmlApplicationContext.java:58)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:136)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
at maven.spring.trial.App.main(App.java:12)
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.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 12 more
I have tried many solutions given on SO already, like adding commons-logging, via maven, downloading the jar and adding it to my external Libraries.
This is a screenshot of my tree structure-
My Pom.xml:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.mkyong.common</groupId>
<artifactId>SpringExamples</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>SpringExamples</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.16.10</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring</artifactId>
<version>2.5.6</version>
</dependency>
</dependencies>
I am running the project from my App.java
Can someone help me with this??
Thanks in advance.
If you run this application on servlet container or application servlet that already provides commons-logging library then you should change scope compile to provided. It looks like this
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
<scope>provided</scope>
</dependency>
Whereas you should change it such as:
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
When you build your application on maven, this library will be packaged together with other library in war file. Then this problem is resolved
Hope this help!
The JARs you have added in your maven pom are available are available only during compile time.
But you also need those jars during runtime (run as main program) as well.
NoClassDefFoundError comes when your class is NOT available in the classpath during runtime. So add those JAR files to the Runtime classpath.
You can look at here to configure the JARs in Intellij.