📄 modify_password.jsp
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<%@ page contentType="text/html; charset=gb2312" language="java"%>
<%@ page import="java.sql.*"%>
<!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=gb2312">
<title>修改用户密码</title>
</head>
<body>
<%
String s_UserID = (String) session.getAttribute("UserID");
String s_UserPassword = request.getParameter("UserPassword");
String s_OldUserPassword = request.getParameter("OldUserPassword");
String strSql="";
String database_username="root";
String database_password="";
String url="jdbc:mysql://localhost/ch3?useUnicode=true&characterEncoding=gb2312";
try
{
//数据库连接
Class.forName("org.gjt.mm.mysql.Driver");
Connection dbConn= DriverManager.getConnection(url,database_username,database_password);
Statement stmt=dbConn.createStatement();
ResultSet rs=null;
//判断用户旧密码是否正确
strSql = "select * from users where UserID ="+s_UserID+" and UserPassword = '"+s_OldUserPassword+"'" ;
rs = stmt.executeQuery(strSql);
if(rs.next())
{
//将新密码保存到数据库中
strSql = "update users set UserPassword = '"+s_UserPassword+"' where UserID ="+s_UserID;
stmt.executeUpdate(strSql);
out.println("<h1 align=center>用户资料修改成功！</h1>");
out.println("<div align=center><input type=button name=btn0 value=确定 onClick=\"window.location='user_info.jsp'\"></div>");
}
else
{
out.println("<h1 align=center>您输入的旧密码错误</h1>");
out.println("<div align=center><input type=button name=btn1 value=返回 onClick='window.history.go(-1)'></div>");
}
rs.close();
stmt.close();
dbConn.close();
}
catch(Exception ex)
{
out.println("<h1 align=center>用户密码修改失败</h1>");
out.println("<div align=center><input type=button name=btn2 value=返回 onClick='window.history.go(-1)'></div>");
}
%>
</body>
</html>
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