hotelbook-JavaWeb-master/src/main/java/com/inks/hb/logInfo/controller/LogInfoServlet.java

package com.inks.hb.logInfo.controller;

import com.google.gson.Gson;
import com.inks.hb.common.PojotoGson;
import com.inks.hb.logInfo.pojo.LogInfo;
import com.inks.hb.logInfo.service.LogInfoService;
import com.inks.hb.logInfo.service.LogInfoServiceImpl;

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 = "LogInfoServlet", value = "/LogInfoServlet")
public class LogInfoServlet 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 {

        // 设置请求和响应的编码格式
        request.setCharacterEncoding("utf-8");
        response.setContentType("text/html;charset=utf-8");

        // 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LogInfoService实例
        LogInfoService service = new LogInfoServiceImpl();

        // 初始化返回结果
        String code = "0";
        String msg = "数据查询正常";
        String count;
        ArrayList<LogInfo> list;
        // 如果make参数为1，则删除指定logId的日志信息
        if (make == 1) {
            int logId = Integer.parseInt(request.getParameter("logId"));
            service.deleteLogInfo(logId);
        }

        // 查询日志信息总数
        count = String.valueOf(service.queryLogInfoNum());
        // 查询指定页数的日志信息
        list = service.query(page, limit);

        // 将结果转换为JSON格式并返回
        PrintWriter out = response.getWriter();
        out.print(new Gson().toJson(new PojotoGson(code, msg, count, list)));
    }
}