为什么不能出结果呢？解决办法
日期：2014-05-20 浏览次数：20687 次
为什么不能出结果呢？
有三个文件，都没有报错，但就是运行第一步后在文本框填写东西点提交之后，运行到第二页就总是报错，检查哈没发现什么错误啊。求高手指教，谢了
holleueser.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<jsp:useBean id="mybean" scope="session" class="myjsp.namehander"/>
<jsp:setProperty name="mybean" property="*"/>
<%
if(request.getParameter("username")!=null){
response.sendRedirect("response.jsp");
}
%>
<%
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>holle.user</title>
</head>
<body>
<h1>Hello,my name is liuyongpo.what is your name?</h1>
<form method="get" action="holleueser.jsp">
<input type="text" name="username" size=25><br>
<input type="submit" value="提交">
<input type="reset" value="重置">
</form>
</body>
</html>
response.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<jsp:useBean id="mybean" scope="session" class="myjsp.namehander"/>
<%
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>Hello,<%=mybean.getname() %></title>
</head>
<body>
<h1>Hello,<jsp:getProperty name="mybean" property="username"/></h1>
</body>
</html>
namehander.java
package myjsp;
public class namehander {
private String username;
public namehander(){
username=null;
}
public void setusername(String name){
username=name;
}
public String getname(){
return username;
}
}
------解决方案--------------------
你把错误贴出来呗
有三个文件，都没有报错，但就是运行第一步后在文本框填写东西点提交之后，运行到第二页就总是报错，检查哈没发现什么错误啊。求高手指教，谢了
holleueser.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<jsp:useBean id="mybean" scope="session" class="myjsp.namehander"/>
<jsp:setProperty name="mybean" property="*"/>
<%
if(request.getParameter("username")!=null){
response.sendRedirect("response.jsp");
}
%>
<%
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>holle.user</title>
</head>
<body>
<h1>Hello,my name is liuyongpo.what is your name?</h1>
<form method="get" action="holleueser.jsp">
<input type="text" name="username" size=25><br>
<input type="submit" value="提交">
<input type="reset" value="重置">
</form>
</body>
</html>
response.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<jsp:useBean id="mybean" scope="session" class="myjsp.namehander"/>
<%
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>Hello,<%=mybean.getname() %></title>
</head>
<body>
<h1>Hello,<jsp:getProperty name="mybean" property="username"/></h1>
</body>
</html>
namehander.java
package myjsp;
public class namehander {
private String username;
public namehander(){
username=null;
}
public void setusername(String name){
username=name;
}
public String getname(){
return username;
}
}
------解决方案--------------------
你把错误贴出来呗
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