hotelbook-JavaWeb-master/src/main/java/com/inks/hb/login/controller/LoginTableServlet.java

package com.inks.hb.login.controller;

import com.google.gson.Gson;
import com.inks.hb.common.PojotoGson;
import com.inks.hb.logInfo.service.LogInfoServiceImpl;
import com.inks.hb.login.pojo.Login;
import com.inks.hb.login.service.LoginService;
import com.inks.hb.login.service.LoginServiceImpl;

import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;

@WebServlet(name = "LoginTableServlet", value = "/LoginTableServlet")
public class LoginTableServlet extends HttpServlet {
    // 处理POST请求
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException {
        this.doGet(request, response);
    }

    // 处理GET请求
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {

        // 设置请求编码为utf-8
        request.setCharacterEncoding("utf-8");
        // 设置响应编码为utf-8
        response.setContentType("text/html;charset=utf-8");
        // 获取响应输出流
        PrintWriter out = response.getWriter();

        // 获取请求参数
        int page = Integer.parseInt(request.getParameter("page"));
        int limit = Integer.parseInt(request.getParameter("limit"));
        int make = Integer.parseInt(request.getParameter("make"));

        // 创建LoginService实例
        LoginService service = new LoginServiceImpl();

        // 初始化返回结果
        String code = "0";
        String msg = "数据查询正常";
        String count;
        ArrayList list;

        // 如果make参数为4，则删除对应的登录信息
        if (make == 4) {
            int loginId = Integer.parseInt(request.getParameter("loginId"));
            new LogInfoServiceImpl().deleteByName(loginId);
            service.deleteLogin(loginId);
        }

        // 查询登录信息
        list = service.query(page, limit);
        // 查询登录信息总数
        count = String.valueOf(service.queryLoginNum());


        // 将查询结果封装为PojotoGson对象
        PojotoGson pojotoGson = new PojotoGson(code, msg, count, list);
        // 使用Gson将PojotoGson对象转换为json字符串
        Gson gson = new Gson();
        out.print(gson.toJson(pojotoGson));
    }
}