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jsp传值为何为空有人遇到过的不,求指导

热度:121   发布时间:2016-04-16 22:20:57.0
jsp传值为何为空有人遇到过的不,求指点
<%@ page contentType="text/html; charset=utf-8" language="java"%>
<%@ page import="java.util.*" %>
<%@ page import="com.nysy.dao.RoleDao"%>
<%@ page import="com.nysy.form.RoleForm" %>
<%@ page import="com.core.ChStr"  %>
<%@ page import="com.nysy.dao.UserDao" %>
<%@ page import="com.nysy.form.UserForm" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<% 
RoleDao roleDao = new RoleDao();
Collection coll=(Collection)roleDao.query("");
UserDao userDao = new UserDao();
UserForm userForm = new UserForm();
userForm = userDao.query_update(Integer.parseInt(request.getParameter("ID")));
%>
 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">    
    <title>修改用户</title>   
<link rel="stylesheet" type="text/css" href="CSS/login.css">
<script language="javascript"> 
function check(){
if(form1.username.value==""){
alert("用户名不允许为空");
form1.username.focus();
return false;
}
if(form1.realname.value==""){
alert("真实姓名不允许为空");
form1.realname.focus();
return false;
}
}
</script>
  </head>
  
  <body>
       <p><br></p>
<table width="312" border="0" align="center" cellpadding="0" cellspacing="0" bgcolor="#FFFFFF" class="tableBorder">
  <form action="user.do?action=userUpdate" name="form1" method="post">
  <tr align="center" valign="middle" bgcolor="#F7F3EF">
    <td height="26" colspan="3"><center class="style1">
      <div><font size="+1" face="黑体">修改用户信息</font></div>
    </center></td>
  </tr>
  <%
      if(userForm==null){
  %>
      <tr>
      <td align="center" colspan="3">无数据&nbsp;<a href="Users/userlist.jsp" >返回</a></td>
      </tr>
    <% 
     }else{
     int    id=0;
      String username="";
      String realname="";
      String email="";
      String mailaddr="";
      String postnum="";
      String idno="";
      String phonenum="";
      int    isuser=0; 
      id       = userForm.getID();
      username = userForm.getUSERNAME();
      realname = userForm.getREAL_NAME();
      email  = userForm.getEMAIL();
      mailaddr = userForm.getPOST_ADDR();
      postnum  = userForm.getPOST_CODE();
      idno     = userForm.getIDENTITY();
      isuser  = userForm.getIS_USE();
      phonenum = userForm.getPHONE_NUM(); 
      %>
      <tr>
      <td width="36">&nbsp;</td>
      <td height="24">ID:</td>
      <td width="176" height="24">
    <input name="ID" type="text" class="txt_grey" disabled="disabled" value="<%=id %>">*</td>
      </tr>
      <tr>
    <td width="36">&nbsp;</td>
    <td height="24">用户名:</td>
    <td width="176" height="24">
    <input name="USERNAME" type="text" class="txt_grey" disabled="disabled" value="<%=username %>">*</td>
   </tr>   
   <tr>
    <td>&nbsp;</td>
    <td height="24">真实姓名:</td>
    <td height="24">
    <input name="REAL_NAME" type="text" contentType="Content-Type" class="txt_grey" value="<%=realname %>" >*</td>
   </tr>
   <tr>
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