会议室管理系统_会议室管理系统c++

作者：2023面试高手 | 2024-03-02 19:40:12

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会议室管理系统c++


<%@ page contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<!DOCTYPE html>
<html>
<head>
  <title>会议室使用情况</title>
  <script src="js/jquery-1.12.4.js"></script>
  <style>
    div{
      width: 500px;
      margin: 0px auto;
      text-align: right;
    }
    table{
      width: 500px;
      text-align: center;
    }
    a{
      color: deepskyblue;
    }
    table,tr,th,td{
      border: 1px solid black;
    }
    tr:nth-of-type(1){
      background: darkgray;
    }
  </style>
</head>
<body>
<div>
  <table>
    <tr>
      <th>预定编号</th>
      <th>会议室</th>
      <th>预定人</th>
      <th>日期</th></tr>
  </table>
  <a href="index1.jsp">预定会议室</a>
</div>
</body>
<script>
  $(function (){
    $.ajax({
      url:"cha",
      type:"post",
      data:"",
      dataType:"text",
      success: function(result){
        if(result.length>0){
          $("table").append(result);
        }else{
          alert("显示异常");
        }
      },
      error: function(){
        alert("异步请求异常");
      }
    })
  })
</script>
</html>

第二个html页面


<%--
  Created by IntelliJ IDEA.
  User: Administrator
  Date: 2023/7/24
  Time: 23:10
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>会议室预订</title>
  <script src="js/jquery-1.12.4.js"></script>
  <style>
    div{
      width: 450px;
      margin: 0px auto;
    }
    table{
      width: 450px;
    }
    tr:nth-of-type(1){
      background: darkgray;
    }
    h3{
      text-align: center;
    }
 
    th{
      text-align: right;
    }
    td{
      text-align: left;
    }
    table,tr,th,td{
      border: 1px solid black;
    }
    #aa{
      text-align: center;
    }
    #bb{
      text-align: center;
    }
  </style>
</head>
<body>
<div>
  <form action="index.jsp" method="post">
    <table>
      <tr><th colspan="2" id="bb"><span>会议室预定</span></th></tr>
      <tr><th>会议室：</th><td><select name="" id="hys">
        <option>一号会议室</option>
        <option>二号会议室</option>
        <option>三号会议室</option>
      </select></td></tr>
      <tr><th>申请人：</th><td><input type="text" name="" id="sqr"></td></tr>
      <tr><th>预定日期：</th><td><input type="text" name="" id="ydrq">日期格式yyyy-mm-dd</td></tr>
      <tr><th colspan="2" id="aa"><span><input type="submit" value="申请">&nbsp;&nbsp;<input type="reset" value="重置"></span></th></tr>
    </table>
  </form>
</div>
</body>
<script>
  $(function (){
    $("form").submit(function (){
      var hys = $("#hys").val();
      var sqr = $("#sqr").val();
      var ydrq = $("#ydrq").val();
      var rq = /^\d{4}\-\d{1,2}\-\d{1,2}$/
      if(sqr==null || sqr==""||
      ydrq=="" || ydrq==null){
        alert("请填写完整信息")
        return false;
      }else{
        if(!rq.test(ydrq)){
          alert("日期格式有误")
          return false;
        }else{
          $.ajax({
            url:"add",
            type:"post",
            data:{
               hys : $("#hys").val(),
               sqr : $("#sqr").val(),
               ydrq : $("#ydrq").val(),
            },
            dataType:"text",
          })
        }
      }
    })
  })
</script>
</html>

Dao包

basedao.java

数据库的连接跟关闭


package dao;
 
import java.sql.*;
 
public class BaseDao {
    Connection conn;
    PreparedStatement pstmt;
    ResultSet rs;
    static{
        try {
            Class.forName("com.mysql.jdbc.Driver");
        } catch (ClassNotFoundException e) {
            throw new RuntimeException(e);
        }
    }
    public Connection LianJie(){
        if(conn==null){
            try {
                conn= DriverManager.getConnection("jdbc:mysql://127.0.0.1:3306/test","root","123");
            } catch (SQLException e) {
                throw new RuntimeException(e);
            }
        }
        return conn;
    }
    public void GuanBi(){
        try {
            if(rs!=null){
                rs.close();
            }
            if(pstmt!=null){
                pstmt.close();
            }
            if(conn!=null){
                conn.close();
            }
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }
}

操作数据库的增查


package dao;
 
import entity.MeetingRoom;
 
import java.sql.*;
 
public class MeetingRoomDao extends BaseDao{
    Connection conn;
    PreparedStatement pstmt;
    ResultSet rs;
    public String Cha(){
        String sql = "select * from MEETINGROOM";
        StringBuilder sb = new StringBuilder();
        if(conn==null){
            conn=LianJie();
        }
        try {
            pstmt = conn.prepareStatement(sql);
            rs = pstmt.executeQuery();
            while(rs.next()){
                int id = rs.getInt("id");
                String meetingName = rs.getString("meeting_name");
                Date meetingOrder = rs.getDate("meeting_order");
                String advanceName = rs.getString("advance_name");
                sb.append("<tr>" +
                        "<th>"+id+"</th>" +
                        "<th>"+meetingName+"</th>" +
                        "<th>"+meetingOrder+"</th>" +
                        "<th>"+advanceName+"</th>" +
                        "</tr>");
            }
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
        GuanBi();
        return sb.toString();
    }
    public int Tian(MeetingRoom m){
        String sql = "insert into MEETINGROOM values(default,?,?,?)";
        if(conn==null){
            conn=LianJie();
        }
        int row=0;
        try {
            pstmt = conn.prepareStatement(sql);
            pstmt.setString(1,m.getMeeting_name());
            pstmt.setString(2, m.getMeeting_order());
            pstmt.setString(3,m.getAdvance_name());
            row = pstmt.executeUpdate();
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
        return row;
    }
}

entity包内存放实体类


package entity;
 
public class MeetingRoom {
    private String meeting_name;
    private String meeting_order;
    private String advance_name;
 
    public MeetingRoom() {
    }
 
    public MeetingRoom(String meeting_name, String meeting_order, String advance_name) {
        this.meeting_name = meeting_name;
        this.meeting_order = meeting_order;
        this.advance_name = advance_name;
    }
 
    public String getMeeting_name() {
        return meeting_name;
    }
 
    public void setMeeting_name(String meeting_name) {
        this.meeting_name = meeting_name;
    }
 
    public String getMeeting_order() {
        return meeting_order;
    }
 
    public void setMeeting_order(String meeting_order) {
        this.meeting_order = meeting_order;
    }
 
    public String getAdvance_name() {
        return advance_name;
    }
 
    public void setAdvance_name(String advance_name) {
        this.advance_name = advance_name;
    }
}

servlet包


package servlet;
 
import dao.MeetingRoomDao;
import entity.MeetingRoom;
 
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("/add")
public class AddServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        MeetingRoomDao mrd = new MeetingRoomDao();
        String hys = req.getParameter("hys");
        String sqr = req.getParameter("sqr");
        String ydrq = req.getParameter("ydrq");
        int row = mrd.Tian(new MeetingRoom(hys,ydrq,sqr));
        if(row>0){
            System.out.println("添加成功");
        }else{
            System.out.println("添加失败");
        }
    }
 
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        req.setCharacterEncoding("utf-8");
        doGet(req,resp);
    }
}


package servlet;
 
import dao.MeetingRoomDao;
 
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;
import java.io.PrintWriter;
 
@WebServlet("/cha")
public class ChaServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        MeetingRoomDao mrd = new MeetingRoomDao();
        String cha = mrd.Cha();
        resp.setContentType("text/html");
        resp.setCharacterEncoding("utf-8");
        PrintWriter out = resp.getWriter();
        out.print(cha);
        out.close();
    }
 
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        req.setCharacterEncoding("utf-8");
        doGet(req,resp);
    }
}

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