请高手指点下HTTP Status 500 -
不好意思   我刚接触JAVA  

TOMCAT运行后出现  
HTTP   Status   500   -  

--------------------------------------------  

type   Exception   report  

message  

description   The   server   encountered   an   internal   error   ()   that   prevented   it   from   fulfilling   this   request.  

exception  

javax.servlet.ServletException:   Wrapper   cannot   find   servlet   class   mypackage.ContactServlet   or   a   class   it   depends   on  
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)  
org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)  
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)  
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)  
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)  
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)  
java.lang.Thread.run(Thread.java:595)  


------解决方案--------------------
服务端代码有错误
------解决方案--------------------
看看你的打包文件对不对

我的异常网推荐解决方案：The server encountered an internal error () that prevented it from fulfilling this request.,http://www.aiyiweb.com/java-web/317.html