<%@ page language="java" import="java.util.*,java.text.*" contentType="text/html; charset=utf-8"%><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>? <head>??? <base href="<%=basePath%>">??? ??? <title>My JSP 'userinfo.jsp' starting page</title>??? ?<meta http-equiv="pragma" content="no-cache">?<meta http-equiv="cache-control" content="no-cache">?<meta http-equiv="expires" content="0">??? ?<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">?<meta http-equiv="description" content="This is my page">?<!--?<link rel="stylesheet" type="text/css" href="styles.css">?-->??? <style type="text/css">? .title{?? width: 30%;??? background-color: #CCC;?? font-weight: bold;? }? .content{????? width:70%;????? background-color: #CBCFE5;? }? ?? </style>? ? </head>? ? <body>??? <h1>用戶信息</h1>??? <hr>??? <center>???? <jsp:useBean? id="regUser" class="entity.Users" scope="session"/>?? ???? <table width="600" cellpadding="0" cellspacing="0" border="1">??????? <tr>????????? <td class="title">用戶名：</td>????????? <td class="content"> <jsp:getProperty name="regUser" property="username"/></td>??????? </tr>??????? <tr>????????? <td class="title">密碼：</td>????????? <td class="content"> <jsp:getProperty name="regUser" property="mypassword"/></td>??????? </tr>??????? <tr>????????? <td class="title">性別：</td>????????? <td class="content"> <jsp:getProperty name="regUser" property="gender"/></td>??????? </tr>??????? <tr>????????? <td class="title">E-mail：</td>????????? <td class="content"> <jsp:getProperty name="regUser" property="email"/></td>??????? </tr>??????? <tr>????????? <td class="title">出生日期：</td>????????? <td class="content"> ??????????? <% ?????????????? SimpleDateFormat sdf = new SimpleDateFormat("yyyy年MM月dd日");?????????????? String date = sdf.format(regUser.getBirthday());?????????????? ??????????? %>???????????? <%=date%>????????? </td>??????? </tr>??????? <tr>????????? <td class="title">愛好：</td>????????? <td class="content"> ??????????? <% ?????????????? String[] favorites = regUser.getFavorites();?????????????? for(String f:favorites)?????????????? {??????????? %>??????????????? <%=f%> ??????????? <% ?????????????? }??????????? %>????????? </td>??????? </tr>??????? <tr>????????? <td class="title">自我介紹：</td>????????? <td class="content"> <jsp:getProperty name="regUser" property="introduce"/></td>??????? </tr>??????? <tr>????????? <td class="title">是否介紹協議：</td>????????? <td class="content"> <jsp:getProperty name="regUser" property="flag"/></td>??????? </tr>???? </table>??? </center>? </body></html>錯誤提示：嚴重: Servlet.service() for servlet jsp threw exceptionjava.lang.NullPointerException?at org.apache.jsp.userinfo_jsp._jspService(userinfo_jsp.java:212)?at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)?at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)?at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:443)?at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)?at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)?at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)?at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)?at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)?at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)?at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)?at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)?at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:726)?at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:469)?at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:394)?at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:311)?at servlet.RegServlet.doPost(RegServlet.java:103)?at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)?at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)?at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)?at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)?at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)?at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)?at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)?at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)?at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)?at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:474)?at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)?at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)?at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)?at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)?at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)?at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:783)?at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)?at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:789)?at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1437)?at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)?at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)?at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)?at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)?at java.lang.Thread.run(Thread.java:745)org.apache.jasper.JasperException: An exception occurred processing JSP page /userinfo.jsp at line 7572:?????????? <td class="content"> 73:???????????? <% 74:??????????????? String[] favorites = regUser.getFavorites();75:??????????????? for(String f:favorites)76:??????????????? {77:???????????? %>78:???????????????? <%=f%> Stacktrace:?at org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:584)?at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:481)?at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)?at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)?at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)?at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)?at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)?at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)?at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)?at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)?at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:726)?at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:469)?at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:394)?at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:311)?at servlet.RegServlet.doPost(RegServlet.java:103)?at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)?at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)?at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)?at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)?at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)?at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)?at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)?at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)?at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)?at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:474)?at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)?at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)?at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)?at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)?at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)?at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:783)?at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)?at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:789)?at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1437)?at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)?at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)?at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)?at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)?at java.lang.Thread.run(Thread.java:745)Caused by: java.lang.NullPointerException?at org.apache.jsp.userinfo_jsp._jspService(userinfo_jsp.java:212)?at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)?at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)?at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:443)?... 37 more
JSP出錯Caused by: java.lang.NullPointerException
AquanGeek
2017-08-27 19:00:13
