HTTP Status 500 -

type Exception report

message

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

exception

org.apache.jasper.JasperException: java.lang.NullPointerException	org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:538)	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:370)	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)	org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238)	org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)	org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1047)	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:817)	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:669)	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:574)	javax.servlet.http.HttpServlet.service(HttpServlet.java:617)	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:70)	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)


出现以上错误的原因是因为lib下jar包和Tomcat下的jar包冲突，去掉lib下 servlet-api-2.5.jar 以及jsp-api.jar 重新启动即可。