Tomcat上部署MavenSSH项目出现的异常

在用Maven构建项目的时候导包的时候要考虑兼容性问题，SSH项目的构建包不能太高，也不能太低，Spring4.0.1,Hibernate4.1.1,Struts2.2.1亲测没毛病.

严重: Exception starting filter struts2java.lang.UnsupportedClassVersionError: com/opensymphony/xwork2/ActionContext : Unsupported major.minor version 51.0    at java.lang.ClassLoader.defineClass1(Native Method)    at java.lang.ClassLoader.defineClass(ClassLoader.java:621)    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)    at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1817)    at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:872)    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1325)    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)    at org.apache.struts2.dispatcher.ng.InitOperations.cleanup(InitOperations.java:109)    at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:60)    at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:275)    at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:397)    at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:108)    at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3693)    at org.apache.catalina.core.StandardContext.start(StandardContext.java:4340)    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)    at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:920)    at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:883)    at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)    at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138)    at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)    at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)    at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)    at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)    at org.apache.catalina.core.StandardService.start(StandardService.java:516)    at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)    at org.apache.catalina.startup.Catalina.start(Catalina.java:566)    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.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)

主要的问题是jdk的版本问题出错了，不能够解析xwork2包的方法，解决的方案是保持jdk的版本为Sun JDK 1.6.0_13的JRE系统库就解决问题了。