web工程login时提示空指针错误
日期：2014-05-17 浏览次数：20556 次
web工程login时提示空指针异常
在论坛中查找相关内容有一位和我的错误几乎相似http://bbs.csdn.net/topics/390028891
但是我的按照给出解决步骤进行修改之后还是有问题
console上错误信息：
2013-1-28 11:21:14 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet jsp threw exception
java.lang.NullPointerException
at org.apache.jsp.check_jsp._jspService(check_jsp.java:72)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
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:175)
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:263)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)
check.jsp源代码
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<title>验证页面</title>
</head>
<body>
<%
String name=(String)request.getParameter("username");
String password=(String)request.getParameter("password");
String repassword=(String)request.getParameter("repassword");
String sex=(String)request.getParameter("sex");
String work=(String)request.getParameter("work");
String[] love=(String[])request.getParameterValues("love");
String show=(String)request.getParameter("show");
String strLove="";
for(int i=0;i<love.length;i++)
{
if(strLove.trim().equals(""))
{
strLove=strLove+"'"+love[i].toString()+"'";
}
else{
strLove=strLove+","+love[i].toString()+"'";
}
}
%>
<font size="4" color="blue">您的信息是 </font><br>
用户名：<%=name %><br>
密码：<%=pas
在论坛中查找相关内容有一位和我的错误几乎相似http://bbs.csdn.net/topics/390028891
但是我的按照给出解决步骤进行修改之后还是有问题
console上错误信息：
2013-1-28 11:21:14 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet jsp threw exception
java.lang.NullPointerException
at org.apache.jsp.check_jsp._jspService(check_jsp.java:72)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
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:175)
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:263)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)
check.jsp源代码
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<title>验证页面</title>
</head>
<body>
<%
String name=(String)request.getParameter("username");
String password=(String)request.getParameter("password");
String repassword=(String)request.getParameter("repassword");
String sex=(String)request.getParameter("sex");
String work=(String)request.getParameter("work");
String[] love=(String[])request.getParameterValues("love");
String show=(String)request.getParameter("show");
String strLove="";
for(int i=0;i<love.length;i++)
{
if(strLove.trim().equals(""))
{
strLove=strLove+"'"+love[i].toString()+"'";
}
else{
strLove=strLove+","+love[i].toString()+"'";
}
}
%>
<font size="4" color="blue">您的信息是 </font><br>
用户名：<%=name %><br>
密码：<%=pas
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