嚴重: Servlet.service() for servlet jsp threw exception
java.lang.NoClassDefFoundError: org/apache/jsp/Index_jsp (wrong name: org/apache/jsp/index_jsp)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:632)
at java.lang.ClassLoader.defineClass(ClassLoader.java:616)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access000

(URLClassLoader.java:58)atjava.net.URLClassLoader1.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:134)
at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:66)
at org.apache.jasper.JspCompilationContext.load(JspCompilationContext.java:618)
at org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:144)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:329)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
at org.apache.coyote.http11.Http11ProtocolH

ttp11ConnectionHandler.process(Http11Protocol.java:583)atorg.apache.tomcat.util.net.JIoEndpointWorker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:662)

解決辦法：把tomcat/work中對應的檔案刪除，重新執行就OK了。不想找的話就直接把work下的所有檔案一起刪除就可以了。