系统删除的前后端代码

前端

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>注销账号</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            margin: 0;
            padding: 0;
            background-color: #f4f4f4;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
        }

        .container {
            background-color: white;
            padding: 30px;
            border-radius: 8px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            width: 300px;
        }

        h2 {
            text-align: center;
            margin-bottom: 20px;
        }

        .input-group {
            margin-bottom: 15px;
        }

        label {
            font-size: 14px;
            display: block;
            margin-bottom: 5px;
        }

        input {
            width: 100%;
            padding: 8px;
            font-size: 14px;
            border: 1px solid #ddd;
            border-radius: 4px;
        }

        .btn {
            background-color: #4CAF50;
            color: white;
            padding: 10px 15px;
            font-size: 16px;
            width: 100%;
            border: none;
            border-radius: 4px;
            cursor: pointer;
        }

        .btn:hover {
            background-color: #45a049;
        }

        .message {
            margin-top: 20px;
            text-align: center;
            font-size: 16px;
        }
    </style>
</head>
<body>
<form action="/yjs/deleteServlet" method="post" id="form">
    <p>id:<input id="account" name="account" type="text"></p>

    <input type="submit" class="button" value="删除">&nbsp;&nbsp;
</form>&nbsp;
</body>
</html>

后端

package com.lianxi.servlet;

import com.lianxi.mapper.ClassesMapper;
import com.lianxi.pojo.Classes;
import com.lianxi.util.SqlSessionFactoryUtils;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet("/deleteServlet")
public class DeleteAccountServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        // 获取请求中的账号参数
        String account = req.getParameter("account");

        // 获取 SqlSessionFactory 实例
        SqlSessionFactory sqlSessionFactory = SqlSessionFactoryUtils.getSqlSessionFactory();
        SqlSession sqlSession = sqlSessionFactory.openSession();

        // 获取对应的 Mapper
        ClassesMapper classesMapper = sqlSession.getMapper(ClassesMapper.class);

        // 查找是否存在该账号
        Classes classes = classesMapper.selectByAccount(account);
        if (classes != null) {
            // 如果账号存在，执行删除操作
            classesMapper.deleteByAccount(account);
            sqlSession.commit(); // 提交事务
            resp.setContentType("text/html;charset=utf-8");
            resp.getWriter().write("账号注销成功！");
        } else {
            // 账号不存在，无法注销
            resp.setContentType("text/html;charset=utf-8");
            resp.getWriter().write("账号不存在，无法注销！");
        }

        // 关闭 SqlSession
        sqlSession.close();
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        // 通过 POST 方法也调用 doGet 方法
        this.doGet(req, resp);
    }
}
posted @ 2025-02-20 18:49  呓语-MSHK  阅读(16)  评论(0)    收藏  举报