我在这里看到了其中的一些问题，但似乎没有一个解决方案/提示将我指向正确的方向。所以我在“/opt/java/6”、“/opt/java/7”和“/opt/java/8”的位置安装了3个JDK。所有这些都在全局 Jenkins 配置中设置。Jenkins 本身使用 Java 8 运行，这是我通过替代项手动设置的系统默认 JRE（我使用的是 CentOS 7）。我有一堆使用 maven 和设置为 source=1.6 target=1.6 的 maven 编译器插件构建的旧项目。每次我尝试使用 Java 6 JDK 执行构建时，我都会得到
Started by user Antony Prince
ln builds/lastSuccessfulBuild /var/lib/jenkins/jobs/BitCalculator/lastSuccessful failed
java.nio.file.DirectoryNotEmptyException: /var/lib/jenkins/jobs/BitCalculator/lastSuccessful
at sun.nio.fs.UnixFileSystemProvider.implDelete(UnixFileSystemProvider.java:242)
at sun.nio.fs.AbstractFileSystemProvider.deleteIfExists(AbstractFileSystemProvider.java:108)
at java.nio.file.Files.deleteIfExists(Files.java:1165)
at sun.reflect.GeneratedMethodAccessor20.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at hudson.Util.createSymlinkJava7(Util.java:1194)
at hudson.Util.createSymlink(Util.java:1112)
at hudson.model.Run.createSymlink(Run.java:1851)
at hudson.model.Run.updateSymlinks(Run.java:1832)
at hudson.model.Run.execute(Run.java:1743)
at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:529)
at hudson.model.ResourceController.execute(ResourceController.java:89)
at hudson.model.Executor.run(Executor.java:240)
ln builds/lastStableBuild /var/lib/jenkins/jobs/BitCalculator/lastStable failed
java.nio.file.DirectoryNotEmptyException: /var/lib/jenkins/jobs/BitCalculator/lastStable
at sun.nio.fs.UnixFileSystemProvider.implDelete(UnixFileSystemProvider.java:242)
at sun.nio.fs.AbstractFileSystemProvider.deleteIfExists(AbstractFileSystemProvider.java:108)
at java.nio.file.Files.deleteIfExists(Files.java:1165)
at sun.reflect.GeneratedMethodAccessor20.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at hudson.Util.createSymlinkJava7(Util.java:1194)
at hudson.Util.createSymlink(Util.java:1112)
at hudson.model.Run.createSymlink(Run.java:1851)
at hudson.model.Run.updateSymlinks(Run.java:1833)
at hudson.model.Run.execute(Run.java:1743)
at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:529)
at hudson.model.ResourceController.execute(ResourceController.java:89)
at hudson.model.Executor.run(Executor.java:240)
Building in workspace /var/lib/jenkins/workspace/BitCalculator
> git rev-parse --is-inside-work-tree # timeout=10
Fetching changes from the remote Git repository
> git config remote.origin.url /home/git/repositories/java/BitCalculator.git # timeout=10
Fetching upstream changes from /home/git/repositories/java/BitCalculator.git
> git --version # timeout=10
> git fetch --tags --progress /home/git/repositories/java/BitCalculator.git +refs/heads/*:refs/remotes/origin/*
> git rev-parse origin/master^{commit} # timeout=10
Checking out Revision 4f119f7783cc4ff00e5bf9bb27850ae7698d4fe8 (origin/master)
> git config core.sparsecheckout # timeout=10
> git checkout -f 4f119f7783cc4ff00e5bf9bb27850ae7698d4fe8
> git rev-list 4f119f7783cc4ff00e5bf9bb27850ae7698d4fe8 # timeout=10
Parsing POMs
[BitCalculator] $ /opt/java/6/bin/java -Djava.awt.headless=true -cp /var/lib/jenkins/plugins/maven-plugin/WEB-INF/lib/maven3-agent-1.5.jar:/usr/share/maven/boot/plexus-classworlds.jar org.jvnet.hudson.maven3.agent.Maven3Main /usr/share/maven /var/lib/jenkins/war/WEB-INF/lib/remoting-2.44.jar /var/lib/jenkins/plugins/maven-plugin/WEB-INF/lib/maven3-interceptor-1.5.jar /var/lib/jenkins/plugins/maven-plugin/WEB-INF/lib/maven3-interceptor-commons-1.5.jar 56445
<===[JENKINS REMOTING CAPACITY]===>channel started
Executing Maven: -B -f /var/lib/jenkins/workspace/BitCalculator/pom.xml -P sign clean deploy
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchStandard(Launcher.java:331)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:239)
at org.jvnet.hudson.maven3.agent.Maven3Main.launch(Maven3Main.java:178)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at hudson.maven.Maven3Builder.call(Maven3Builder.java:134)
at hudson.maven.Maven3Builder.call(Maven3Builder.java:69)
at hudson.remoting.UserRequest.perform(UserRequest.java:118)
at hudson.remoting.UserRequest.perform(UserRequest.java:48)
at hudson.remoting.Request$2.run(Request.java:328)
at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.UnsupportedClassVersionError: javax/inject/Provider : Unsupported major.minor version 51.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClassFromSelf(ClassRealm.java:386)
at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:42)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:244)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:230)
at org.jvnet.hudson.maven3.launcher.Maven3Launcher.main(Maven3Launcher.java:86)
... 22 more
channel stopped
[BitCalculator] $ /bin/sh -xe /tmp/hudson6524656470722686910.sh
+ rm 'target/*no_deps*'
rm: cannot remove 'target/*no_deps*': No such file or directory
Build step 'Execute shell' marked build as failure
ERROR: Failed to parse POMs
hudson.util.IOException2: java.lang.reflect.InvocationTargetException
at hudson.maven.Maven3Builder.call(Maven3Builder.java:178)
at hudson.maven.Maven3Builder.call(Maven3Builder.java:69)
at hudson.remoting.UserRequest.perform(UserRequest.java:118)
at hudson.remoting.UserRequest.perform(UserRequest.java:48)
at hudson.remoting.Request$2.run(Request.java:328)
at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at hudson.maven.Maven3Builder.call(Maven3Builder.java:134)
... 10 more
Caused by: java.lang.Exception: java.lang.reflect.InvocationTargetException
at org.jvnet.hudson.maven3.agent.Maven3Main.launch(Maven3Main.java:181)
... 15 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchStandard(Launcher.java:331)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:239)
at org.jvnet.hudson.maven3.agent.Maven3Main.launch(Maven3Main.java:178)
... 15 more
Caused by: java.lang.UnsupportedClassVersionError: javax/inject/Provider : Unsupported major.minor version 51.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClassFromSelf(ClassRealm.java:386)
at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:42)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:244)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:230)
at org.jvnet.hudson.maven3.launcher.Maven3Launcher.main(Maven3Launcher.java:86)
... 22 more
Archiving artifacts
Sending e-mails to: antony@blazrsoft.com
Finished: FAILURE
这表明某处有 Java 7 干扰，但我不确定在哪里。该代码符合 1.6，并且大多数项目没有依赖项，所以我不确定为什么会发生这种情况。如果我在 Jenkins 之外执行 maven，则项目使用 JDK 6 构建得很好，所以它让我认为 Jenkins 的某个地方存在错误配置，但我不确定在哪里，因为一切似乎都应该是这样。JDK 的路径在全局配置中正确设置，项目本身设置为使用指定的 JDK。如果它是一个重复的问题或一些愚蠢的东西，我深表歉意，但我几天来一直试图解决这个问题，但没有任何结果。每个人都只是说检查路径并确保没有使用更高版本的 JDK 构建的依赖工件，我确信这不是问题。
$ mvn -version
Apache Maven 3.0.5 (Red Hat 3.0.5-16)
Maven home: /usr/share/maven
Java version: 1.8.0_20, vendor: Oracle Corporation
Java home: /opt/java/8/jre
Default locale: en_US, platform encoding: ANSI_X3.4-1968
OS name: "linux", version: "2.6.32-openvz-042stab090.5-amd64", arch: "amd64", family: "unix"
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<encoding>UTF-8</encoding>
<source>1.6</source>
<target>1.6</target>
<compilerVersion>1.6</compilerVersion>
</configuration>
</plugin>