org/apache/maven/cli/MavenCli : Unsupported major.minor version 51.0-优快云博客

本文描述了在使用Maven进行测试时遇到的UnsupportedClassVersionError异常，该问题源于Maven版本与JDK版本不匹配。Maven 3.6要求JDK 1.7或更高版本，而当前环境使用的是JDK 1.6。解决方案包括升级JDK到1.7以上或使用与当前JDK版本兼容的低版本Maven。

Exception in thread "main" java.lang.UnsupportedClassVersionError: org/apache/maven/cli/MavenCli : 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:401)
   at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:42)
   at org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass(ClassRealm.java:271)
   at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:254)
   at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:239)
   at org.codehaus.plexus.classworlds.launcher.Launcher.getMainClass(Launcher.java:144)
   at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:266)
   at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
   at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
   at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)