5.用户修改密码（前端与后端）2024-12-25

6.案例:请假条管理系统2024-11-222024-12-26 7.jsp+Mybatis+Mysql web开发制作模板02-20

用户修改密码的前端:

点击查看代码

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page isELIgnored="false" %>

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Change Password</title>
</head>
<body>
<h1>修改密码</h1>
<c:if test="${not empty message}">
    <div style="color: green;">${message}</div>
</c:if>
<form action="${pageContext.request.contextPath}/ChangePasswordServlet" method="post">
    <div>
        <label for="oldPassword">原密码:</label>
        <input type="password" id="oldPassword" name="oldPassword" required>
    </div>
    <div>
        <label for="newPassword">新密码:</label>
        <input type="password" id="newPassword" name="newPassword" required>
    </div>
    <div>
        <label for="confirmNewPassword">确认新密码:</label>
        <input type="password" id="confirmNewPassword" name="confirmNewPassword" required>
    </div>
    <div>
        <button type="submit">修改密码</button>
    </div>
</form>
</body>
</html>

修改密码对应后端内容：

点击查看代码

package com.QixunQiu.web;

import com.QixunQiu.pojo.User;
import com.QixunQiu.service.UserService;

import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.annotation.*;
import java.io.IOException;

@WebServlet("/ChangePasswordServlet")
public class ChangePasswordServlet extends HttpServlet {
    private UserService Userservice= new UserService();
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String oldPassword = request.getParameter("oldPassword");
        String newPassword = request.getParameter("newPassword");
        String confirmNewPassword = request.getParameter("confirmNewPassword");

        if (!newPassword.equals(confirmNewPassword)) {
            request.setAttribute("message", "新密码和确认密码不匹配.");
            request.getRequestDispatcher("/ChangePassword.jsp").forward(request, response);
            return;
        }

        User user = (User) request.getSession().getAttribute("user");
        if (user == null || !user.getPassWord().equals(oldPassword)) {
            request.setAttribute("message", "旧密码不正确");
            request.getRequestDispatcher("/ChangePassword.jsp").forward(request, response);
            return;
        }

        // 更新密码逻辑
        user.setPassWord(newPassword);
        // 假设有一个方法来更新数据库中的密码
        Userservice.updateUser(user);

        request.setAttribute("message", "修改成功");
        request.getRequestDispatcher("/login.html").forward(request, response);
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        this.doGet(request, response);
    }
}