Question

javax.servlet.ServletException : Unable to load class for JSP

at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:515)
at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:419)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at com.hollycrm.framework.web.DataSourceLookupFilter.doFilter(DataSourceLookupFilter.java:47)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at com.hollycrm.icallcenter.service.login.web.AuthenticationFilter.doFilter(AuthenticationFilter.java:47)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at com.hollycrm.framework.web.StrutsEncodeFilter.doFilter(StrutsEncodeFilter.java:27)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:210)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:870)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685)
at java.lang.Thread.run(Unknown Source)

Answer 1

你这问题问的根本给不了你答案，你以为把错误log贴出来别人就能看懂吗，你应该用这些log自己先分析一下，最可能出错的代码是哪一部分。既然Unable to load class for JSP这个提示都出来了，你可以看看是不是哪个类编译出错导致无法加载。很久没有做jsp了，但这个问题大多数刚做jsp的都会遇到，问问题的方法需要注意一下。就是问问题也要考虑给回答者一个解决问题的入口。而你的问题在于别人对你的代码未知，完全没有回答的入口。

Answer 2

servlet出现问题，一般可以去看看配置文件。