HTTP Status 503 - This application is not currently available以下是错误代码?该怎么解决呢?

题目

HTTP Status 503 - This application is not currently available以下是错误代码?该怎么解决呢?
信息:Starting Servlet Engine:Apache Tomcat/6.0.16
2009-11-3 20:31:47 org.apache.tomcat.util.modeler.Registry registerComponent
严重:Null component Catalina:type=JspMonitor,name=jsp,WebModule=//localhost/testshooping,J2EEApplication=none,J2EEServer=none
2009-11-3 20:31:47 org.apache.catalina.startup.HostConfig deployDirectory
严重:Error deploying web application directory testshooping
java.lang.UnsupportedClassVersionError:Bad version number in .class file
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1819)
at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:872)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLo

答案

所部属的工程中 的class文件的版本和当前虚拟机版本不一致.如果你有源码你可以把源码用自己装的jdk编译一下.