这回又是为啥?总是null?
Lanee 2008-05-10 11:57:12 index2.jsp提交一个form到switch.jsp,在switch.jsp中用userbean得到index2.jsp中提交的数据,可是得到的是null
为啥哩?
index2.jsp
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>信息处文档处理</title>
<link href="WEB-INF/style.css" rel="stylesheet" type="text/css" />
</head>
<body>
<form name="login" method="post" action="switch.jsp">
<table width="80%" border="0" align="center" cellpadding="0" cellspacing="0" class="sjword">
<tr>
<td colspan="3"><br />
<hr /></td>
</tr>
<tr>
<td> </td>
<td>用户名:<input name="Uname" type="text" /> </td>
<td>密 码:<input name="Upwd" type="password" /></td>
</tr>
<tr>
<td> </td>
<td><input type="hidden" name="errmsg" /></td>
<td> </td>
</tr>
<tr>
<td> </td>
<td><input name="Submit" type="submit" value=" 登 录 " /></td>
<td> </td>
</tr>
</table>
</form>
</body>
</html>
switch.jsp
<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<jsp:useBean id="UserBean" class="conn.User" scope="session" />
<jsp:setProperty name="UserBean" property="*" />
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
</head>
<body>
<%=UserBean.getUname()%>
</body>
</html>
User.java
package conn;
public class User {
private String Utag;
private String Upwd;//密码
private String Uname;//用户名
public String getUpwd() {
return Upwd;
}
public String getUtag() {
return Utag;
}
public String getUname() {
return Uname;
}
public void setUpwd(String Upwd) {
this.Upwd = Upwd;
}
public void setUtag(String Utag) {
this.Utag = Utag;
}
public void setUname(String Uname) {
this.Uname = Uname;
}
}
最后switch.jsp显示null,为什么得不到form里面的值呢?