diff --git "a/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/src/gongju/DBUtil.java" "b/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/src/gongju/DBUtil.java"
new file mode 100644
index 0000000000000000000000000000000000000000..52baf903c19485e3d009091553b14dd9bad4e865
--- /dev/null
+++ "b/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/src/gongju/DBUtil.java"	
@@ -0,0 +1,51 @@
+package gongju;
+
+import java.sql.*;
+
+public class DBUtil {
+    static String url="jdbc:mysql:///test?characterEncoding=utf8";
+    static String user = "root";
+    static String password = "root";
+    static {
+        try {
+            Class.forName("com.mysql.jdbc.Driver");
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+    }
+public static Connection getconn() throws SQLException {
+    Connection conn = DriverManager.getConnection(url,user,password);
+    return conn;
+}
+public static ResultSet query(String sql , Object...tj) throws SQLException {
+    Connection conn = getconn();
+    PreparedStatement pre = conn.prepareStatement(sql);
+    ResultSet re = null;
+    for (int i = 0; i < tj.length; i++) {
+        pre.setObject((i+1),tj[i]);
+    }
+    re = pre.executeQuery();
+    return re;
+}
+    public static int update(String sql , Object...tj) throws SQLException {
+        Connection conn = getconn();
+        PreparedStatement pre = conn.prepareStatement(sql);
+        int re = 0;
+        for (int i = 0; i < tj.length; i++) {
+            pre.setObject((i+1),tj[i]);
+        }
+        re = pre.executeUpdate();
+        return re;
+    }
+    public static void close(ResultSet re , PreparedStatement pre , Connection conn) throws SQLException {
+        if (re!=null){
+            re.close();
+        }
+        if (pre!=null){
+            pre.close();
+        }
+        if (conn!=null){
+            conn.close();
+        }
+    }
+}
diff --git "a/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/src/pickaging/HouseInfo.java" "b/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/src/pickaging/HouseInfo.java"
new file mode 100644
index 0000000000000000000000000000000000000000..c7918dab9eb699b2434bf6f3840fc7dae8111635
--- /dev/null
+++ "b/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/src/pickaging/HouseInfo.java"	
@@ -0,0 +1,93 @@
+package pickaging;
+
+public class HouseInfo {
+    private int id;
+    private String mode;
+    private double rent;
+    private String cont;
+    private String method;
+    private int house;
+    private String addr;
+
+    public HouseInfo() {
+    }
+
+    public HouseInfo(int id, String mode, double rent, String cont, String method, int house, String addr) {
+        this.id = id;
+        this.mode = mode;
+        this.rent = rent;
+        this.cont = cont;
+        this.method = method;
+        this.house = house;
+        this.addr = addr;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getMode() {
+        return mode;
+    }
+
+    public void setMode(String mode) {
+        this.mode = mode;
+    }
+
+    public double getRent() {
+        return rent;
+    }
+
+    public void setRent(double rent) {
+        this.rent = rent;
+    }
+
+    public String getCont() {
+        return cont;
+    }
+
+    public void setCont(String cont) {
+        this.cont = cont;
+    }
+
+    public String getMethod() {
+        return method;
+    }
+
+    public void setMethod(String method) {
+        this.method = method;
+    }
+
+    public int getHouse() {
+        return house;
+    }
+
+    public void setHouse(int house) {
+        this.house = house;
+    }
+
+    public String getAddr() {
+        return addr;
+    }
+
+    public void setAddr(String addr) {
+        this.addr = addr;
+    }
+
+    @Override
+    public String toString() {
+        return "HouseInfo{" +
+                "id=" + id +
+                ", mode='" + mode + '\'' +
+                ", rent=" + rent +
+                ", cont='" + cont + '\'' +
+                ", method='" + method + '\'' +
+                ", house=" + house +
+                ", addr='" + addr + '\'' +
+                '}';
+    }
+}
diff --git "a/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/src/pickaging/HouseType.java" "b/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/src/pickaging/HouseType.java"
new file mode 100644
index 0000000000000000000000000000000000000000..ecf1d54f26bd5d33ac18e2a662fc5393fb84b836
--- /dev/null
+++ "b/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/src/pickaging/HouseType.java"	
@@ -0,0 +1,38 @@
+package pickaging;
+
+public class HouseType {
+    private int id;
+    private String type;
+
+    public HouseType() {
+    }
+
+    public HouseType(int id, String type) {
+        this.id = id;
+        this.type = type;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getType() {
+        return type;
+    }
+
+    public void setType(String type) {
+        this.type = type;
+    }
+
+    @Override
+    public String toString() {
+        return "HouseType{" +
+                "id=" + id +
+                ", type='" + type + '\'' +
+                '}';
+    }
+}
diff --git "a/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/src/yingyong/Add.java" "b/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/src/yingyong/Add.java"
new file mode 100644
index 0000000000000000000000000000000000000000..418b7aeb14fa3684f4dc1e76429a88d8b8a4aed5
--- /dev/null
+++ "b/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/src/yingyong/Add.java"	
@@ -0,0 +1,44 @@
+package yingyong;
+
+import gongju.DBUtil;
+import pickaging.HouseInfo;
+import pickaging.HouseType;
+
+import javax.servlet.*;
+import javax.servlet.http.*;
+import javax.servlet.annotation.*;
+import java.io.IOException;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.ArrayList;
+
+@WebServlet("/add")
+public class Add extends HttpServlet {
+    @Override
+    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        request.setCharacterEncoding("utf8");
+        response.setContentType("text/html;charset=utf8");
+        String sql = "select * from house_type;";
+        try {
+            ResultSet re = DBUtil.query(sql);
+            ArrayList<HouseType> list = new ArrayList<>();
+            while (re.next()){
+                int id = re.getInt("id");
+                String type = re.getString("type");
+                HouseType ht = new HouseType(id, type);
+                list.add(ht);
+            }
+            request.setAttribute("list",list);
+            request.getRequestDispatcher("WEB-INF/add.jsp").forward(request,response);
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+
+
+    }
+
+    @Override
+    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+
+    }
+}
diff --git "a/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/src/yingyong/Insert.java" "b/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/src/yingyong/Insert.java"
new file mode 100644
index 0000000000000000000000000000000000000000..c20b1135431afac173b816f3976774b948fed91c
--- /dev/null
+++ "b/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/src/yingyong/Insert.java"	
@@ -0,0 +1,43 @@
+package yingyong;
+
+import gongju.DBUtil;
+
+import javax.servlet.*;
+import javax.servlet.http.*;
+import javax.servlet.annotation.*;
+import java.io.IOException;
+import java.sql.SQLException;
+
+@WebServlet("/insert")
+public class Insert extends HttpServlet {
+    @Override
+    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        doPost(request,response);
+    }
+
+    @Override
+    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        request.setCharacterEncoding("utf8");
+        response.setContentType("text/html;charset=utf8");
+        String id = request.getParameter("id");
+        String mode = request.getParameter("mode");
+        String rent = request.getParameter("rent");
+        String cont = request.getParameter("cont");
+        String method = request.getParameter("method");
+        int house = Integer.parseInt(request.getParameter("type"));
+        String addr = request.getParameter("addr");
+        String sql = "insert into house_info values (0,?,?,?,?,?,?)";
+        int i = 0;
+        try {
+            i = DBUtil.update(sql,mode, rent, cont, method, house, addr);
+        } catch (SQLException e) {
+            throw new RuntimeException(e);
+        }
+        if (i>0){
+            response.getWriter().write("<script>alert('添加成功');location.href='/select';</script>");
+// resp.getWriter().write("<script>alert('添加成功');location.href='/select';</script>");
+        }else {
+            response.getWriter().write("添加失败");
+        }
+    }
+}
diff --git "a/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/src/yingyong/Select.java" "b/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/src/yingyong/Select.java"
new file mode 100644
index 0000000000000000000000000000000000000000..cba8b34468214fd65279ad210b3304a93429d789
--- /dev/null
+++ "b/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/src/yingyong/Select.java"	
@@ -0,0 +1,48 @@
+package yingyong;
+
+import gongju.DBUtil;
+import pickaging.HouseInfo;
+
+import javax.servlet.*;
+import javax.servlet.http.*;
+import javax.servlet.annotation.*;
+import java.io.IOException;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.ArrayList;
+
+@WebServlet("/select")
+public class Select extends HttpServlet {
+    @Override
+    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        request.setCharacterEncoding("utf8");
+        response.setContentType("text/html;charset=utf8");
+        String sql = "select * from house_info i left join house_type t on i.house_type_id = t.id";
+        try {
+        ResultSet re = DBUtil.query(sql);
+        ArrayList<HouseInfo> list = new ArrayList<>();
+            while (re.next()){
+                int id = re.getInt(1);
+                int typeid = re.getInt(6);
+                String mode = re.getString(2);
+                double rent = re.getDouble(3);
+                String cont = re.getString(4);
+                String depo = re.getString(5);
+                String addr = re.getString(7);
+                int tid = re.getInt(8);
+                String type = re.getString(9);
+                HouseInfo hi = new HouseInfo(id, mode, rent, cont, depo, tid, addr);
+                list.add(hi);
+            }
+            request.setAttribute("list",list);
+            request.getRequestDispatcher("WEB-INF/list.jsp").forward(request,response);
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+
+    }
+}
diff --git "a/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/web/WEB-INF/add.jsp" "b/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/web/WEB-INF/add.jsp"
new file mode 100644
index 0000000000000000000000000000000000000000..9642a2955bbdb447a19e5680db7f4975e1b7ac2e
--- /dev/null
+++ "b/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/web/WEB-INF/add.jsp"	
@@ -0,0 +1,60 @@
+<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
+<%--
+  Created by IntelliJ IDEA.
+  User: Administrator
+  Date: 2023-06-07
+  Time: 11:22
+  To change this template use File | Settings | File Templates.
+--%>
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<html>
+<head>
+    <title>Title</title>
+</head>
+<body>
+<style>
+    th {
+        align-content: center;
+    }
+</style>
+<form action="/insert"method="post">
+    <table border="1">
+        <tr>
+            <th>租赁方式</th>
+            <th><input type="text" name="mode"></th>
+        </tr>
+        <tr>
+            <th>租金</th>
+            <th><input type="text" name="rent"></th>
+        </tr>
+        <tr>
+            <th>联系人</th>
+            <th><input type="text" name="cont"></th>
+        </tr>
+        <tr>
+            <th>押金方式</th>
+            <th><input type="text" name="method"></th>
+        </tr>
+        <tr>
+            <th>房屋类型</th>
+            <th>
+                <select name="type">
+                    <c:forEach items="${list}" var="fz">
+                        <option value="${fz.id}">
+                                ${fz.type}
+                        </option>
+                    </c:forEach>
+                </select>
+            </th>
+        </tr>
+        <tr>
+            <th>详细地址</th>
+            <th><input type="text" name="addr"></th>
+        </tr>
+        <tr>
+            <th><input type="submit" value="确定"></th>
+        </tr>
+    </table>
+</form>
+</body>
+</html>
diff --git "a/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/web/WEB-INF/lib/jstl.jar" "b/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/web/WEB-INF/lib/jstl.jar"
new file mode 100644
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diff --git "a/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/web/WEB-INF/lib/mysql-connector-java-5.1.48.jar" "b/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/web/WEB-INF/lib/mysql-connector-java-5.1.48.jar"
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diff --git "a/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/web/WEB-INF/lib/servlet-api.jar" "b/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/web/WEB-INF/lib/servlet-api.jar"
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diff --git "a/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/web/WEB-INF/lib/standard.jar" "b/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/web/WEB-INF/lib/standard.jar"
new file mode 100644
index 0000000000000000000000000000000000000000..bc528acb949096eeb2e3048de1ff5b9ab12a66c5
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diff --git "a/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/web/WEB-INF/list.jsp" "b/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/web/WEB-INF/list.jsp"
new file mode 100644
index 0000000000000000000000000000000000000000..f7b55e8c08af57b7e52a96d41a1f14848a83bc45
--- /dev/null
+++ "b/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/web/WEB-INF/list.jsp"	
@@ -0,0 +1,40 @@
+<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
+<%--
+  Created by IntelliJ IDEA.
+  User: Administrator
+  Date: 2023-06-07
+  Time: 10:59
+  To change this template use File | Settings | File Templates.
+--%>
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<html>
+<head>
+    <title>Title</title>
+</head>
+<body>
+<form action="/add">
+    <input type="submit" name="add" value="添加">
+</form>
+<table border="1">
+    <tr>
+        <th>编号</th>
+        <th>租赁方式</th>
+        <th>租金（元）</th>
+        <th>联系人</th>
+        <th>押金方式</th>
+        <th>房屋类型</th>
+        <th>详细地址</th></tr>
+    <c:forEach items="${list}" var="fz">
+        <tr>
+        <th>${fz.id}</th>
+        <th>${fz.mode}</th>
+        <th>${fz.rent}</th>
+        <th>${fz.cont}</th>
+        <th>${fz.method}</th>
+        <th>${fz.house}</th>
+        <th>${fz.addr}</th>
+        </tr>
+    </c:forEach>
+</table>
+</body>
+</html>
diff --git "a/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/web/WEB-INF/web.xml" "b/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/web/WEB-INF/web.xml"
new file mode 100644
index 0000000000000000000000000000000000000000..d80081d1318531b6c30eaf0d748bf80a0b2e042a
--- /dev/null
+++ "b/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/web/WEB-INF/web.xml"	
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
+         version="4.0">
+</web-app>
\ No newline at end of file
diff --git "a/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/web/index.jsp" "b/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/web/index.jsp"
new file mode 100644
index 0000000000000000000000000000000000000000..b32a70371c315736eed2e833cbbc056086e901d9
--- /dev/null
+++ "b/21 \345\210\230\345\260\221\346\265\267/2023 0607 \346\210\277\345\255\220/web/index.jsp"	
@@ -0,0 +1,16 @@
+<%--
+  Created by IntelliJ IDEA.
+  User: Administrator
+  Date: 2023-06-07
+  Time: 08:48
+  To change this template use File | Settings | File Templates.
+--%>
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<html>
+  <head>
+    <title>$Title$</title>
+  </head>
+  <body>
+  $END$
+  </body>
+</html>