完整错误信息：

HTTP Status 500 - /online.jsp (line: 495, column: 2) File [/foot.jsp] not found

type Exception report

message /online.jsp (line: 495, column: 2) File [/foot.jsp] not found

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

exception

org.apache.jasper.JasperException: /online.jsp (line: 495, column: 2) File [/foot.jsp] not found

org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:41) org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:275) org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:91) org.apache.jasper.compiler.Parser.processIncludeDirective(Parser.java:323) org.apache.jasper.compiler.Parser.parseIncludeDirective(Parser.java:358) org.apache.jasper.compiler.Parser.parseDirective(Parser.java:461) org.apache.jasper.compiler.Parser.parseFileDirectives(Parser.java:1782) org.apache.jasper.compiler.Parser.parse(Parser.java:136) org.apache.jasper.compiler.ParserController.doParse(ParserController.java:227) org.apache.jasper.compiler.ParserController.parseDirectives(ParserController.java:117) org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:194) org.apache.jasper.compiler.Compiler.compile(Compiler.java:356) org.apache.jasper.compiler.Compiler.compile(Compiler.java:336) org.apache.jasper.compiler.Compiler.compile(Compiler.java:323) org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:580) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:356) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340) javax.servlet.http.HttpServlet.service(HttpServlet.java:729) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:168) org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:303) org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1228) org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1011) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:955) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857) javax.servlet.http.HttpServlet.service(HttpServlet.java:622) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842) javax.servlet.http.HttpServlet.service(HttpServlet.java:729) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) com.auth.filter.AuthorizationFilter.doFilterInternal(AuthorizationFilter.java:77) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344) org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261) com.auth.filter.AuthenticationFilter.doFilterInternal(AuthenticationFilter.java:115) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344) org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261) com.activate.filter.ActivateFilter.doFilterInternal(ActivateFilter.java:52) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344) org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) note The full stack trace of the root cause is available in the Apache Tomcat/8.0.21 logs.

Apache Tomcat/8.0.21

错误原因：

因为online.jsp文件中使用了include语句

<%@ include file="/foot.jsp"%>

而对应的foot.jsp文件不存在；

解决方法就不用多说了。

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