WebRoot/mod.jsp

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<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ page language="java" import="java.sql.*" %>
<jsp:useBean id="connDbBean" scope="page" class="com.util.db"/>
<%@ page isELIgnored="false" %> 

<html>
  <head>
    
    <title>修改密码</title><link rel="stylesheet" href="css.css" type="text/css">
    

  <meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head>

<script>
function check()
{
	if(document.form1.ymm.value=="")
	{
		alert("请输入原密码");
		document.form1.ymm.focus();
		return false;
	}
	if(document.form1.xmm1.value=="")
	{
		alert("请输入新密码");
		document.form1.xmm1.focus();
		return false;
	}
	if(document.form1.xmm2.value=="")
	{
		alert("请输入确认密码");
		document.form1.xmm2.focus();
		return false;
	}
	if (document.form1.xmm1.value!=document.form1.xmm2.value)
	{
		alert("对不起，两次密码不一至，请重新输入");
		document.form1.xmm1.value="";
		document.form1.xmm2.value="";
		document.form1.xmm1.focus();
		return false;
	}
}

</script>
<%
if(request.getParameter("updt")!=null)
{
String sql="";
sql="select id from allusers where username='"+request.getSession().getAttribute("username")+"' and pwd='"+request.getParameter("ymm")+"'";
 ResultSet RS_result=connDbBean.executeQuery(sql);
 if(RS_result.next())
 {
 	sql="update allusers set pwd='"+request.getParameter("xmm1")+"' where username='"+request.getSession().getAttribute("username")+"' ";
	connDbBean.hsgexecute(sql);
	out.print("<script>javascript:alert('操作成功！');location.href='sy.jsp';</script>");
 }
 else
 {
	out.print("<script>javascript:alert('原密码不正确！');location.href='sy.jsp';</script>");