即使 mvn clean install 在命令提示符下工作正常，在 jenkins 中构建也会失败答案

【问题标题】：even though mvn clean install works fine from command prompt, build fails in jenkins即使 mvn clean install 在命令提示符下工作正常，在 jenkins 中构建也会失败
【发布时间】：2017-06-20 07:01:14
【问题描述】：

我是 Jenkins 和 Maven 的新手。我在eclipse中有maven项目。我正在使用 Jenkins 执行。当我执行命令“mvn clean install”时，它工作正常。但是当我现在通过 Build 在 Jenkins 中执行时，它会抛出空指针异常。

请帮我解决这个问题。

    pom.xml clean install
java.lang.NullPointerException
    at jenkins.maven3.agent.Maven33Main.launch(Maven33Main.java:176)
    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 hudson.maven.Maven3Builder.call(Maven3Builder.java:139)
    at hudson.maven.Maven3Builder.call(Maven3Builder.java:70)
    at hudson.remoting.UserRequest.perform(UserRequest.java:153)
    at hudson.remoting.UserRequest.perform(UserRequest.java:50)
    at hudson.remoting.Request$2.run(Request.java:336)
    at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:68)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Started by user praveen somayaji
Finished: ABORTED
FATAL: java.lang.reflect.InvocationTargetException
java.lang.NullPointerException
    at jenkins.maven3.agent.Maven33Main.launch(Maven33Main.java:176)
Caused: java.lang.Exception
    at jenkins.maven3.agent.Maven33Main.launch(Maven33Main.java:179)
Caused: 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 hudson.maven.Maven3Builder.call(Maven3Builder.java:139)
    at hudson.maven.Maven3Builder.call(Maven3Builder.java:70)
    at hudson.remoting.UserRequest.perform(UserRequest.java:153)
    at hudson.remoting.UserRequest.perform(UserRequest.java:50)
    at hudson.remoting.Request$2.run(Request.java:336)
    at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:68)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Caused: java.io.IOException
    at hudson.maven.Maven3Builder.call(Maven3Builder.java:179)
    at hudson.maven.Maven3Builder.call(Maven3Builder.java:70)
    at hudson.remoting.UserRequest.perform(UserRequest.java:153)
    at hudson.remoting.UserRequest.perform(UserRequest.java:50)
    at hudson.remoting.Request$2.run(Request.java:336)
    at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:68)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
    at ......remote call to Channel to Maven [C:\Program Files\Java\jdk1.8.0_112/bin/java, -cp

【问题讨论】：

你忘记了日志。
添加了日志..请帮帮我。
请添加完整的日志输出，而不仅仅是摘录。你怎么称呼Maven？哪个 Maven 版本？哪个 Jenkins 版本？
对我来说，删除 Jenkins 工作区后它工作了

标签： maven jenkins

【解决方案1】：

现在工作正常。我在 Pre 步骤下添加了命令“mvn clean install”。 Maven Project-> Configure-> Pre Steps -> add above command -> Save.

【讨论】：