diff --git "a/03 \345\276\220\351\233\250\346\231\264/20230610   JSP\346\265\213\351\252\214\342\200\224\342\200\224\345\221\230\345\267\245\344\277\241\346\201\257\347\256\241\347\220\206.md" "b/03 \345\276\220\351\233\250\346\231\264/20230610   JSP\346\265\213\351\252\214\342\200\224\342\200\224\345\221\230\345\267\245\344\277\241\346\201\257\347\256\241\347\220\206.md"
new file mode 100644
index 0000000000000000000000000000000000000000..04034c9f7690e60c110e024aa4f6814306baa9f4
--- /dev/null
+++ "b/03 \345\276\220\351\233\250\346\231\264/20230610   JSP\346\265\213\351\252\214\342\200\224\342\200\224\345\221\230\345\267\245\344\277\241\346\201\257\347\256\241\347\220\206.md"	
@@ -0,0 +1,721 @@
+```mysql
+# 数据库名称：CompanyManager
+create database CompanyManager charset utf8;
+use CompanyManager;
+# 表： Dept (部门信息表)
+create table Dept
+(
+    DeptID   int primary key auto_increment, # 部门编号主键,自动增长列
+    DeptName varchar(20) not null            # 部门名称	不允许为空
+);
+insert into Dept
+values (0, '后勤部'),
+       (0, '法务部'),
+       (0, '开发部'),
+       (0, '人力部'),
+       (0, '财务部');
+# 表：Emp (员工信息表)
+create table Emp
+(
+    EmpID    int primary key auto_increment,     # 员工编号主键,自动增长列
+    EmpName  varchar(20)        not null,        # 员工姓名	不允许为空
+    Sex      char(2)            not null,        #    性别不允许为空
+    Age      int                not null,        # 员工年龄不允许为空
+    Tel      varchar(20) unique not null,        # 联系电话	不允许为空（唯一约束）
+    PassWord varchar(12)        not null,        # 密码	不允许为空
+    DeptID   int,
+    foreign key (DeptID) references Dept (DeptID)# 部门编号外键，关联部门表DeptID字段
+);
+insert into Emp
+values (0, '季川', '男', 22, '1516816', '123', 1),
+       (0, '梓兰', '女', 23, '1515530', '456', 4),
+       (0, '华容', '女', 25, '1805862', '789', 2),
+       (0, '李铭', '男', 23, '1348028', '023', 5),
+       (0, '季静', '女', 21, '1516658', '112', 3);
+```
+
+```java
+package bean;
+
+public class Dept {
+   private int deptId;
+   private String deptName;
+
+    public Dept(int empId) {
+    }
+
+    public int getDeptId() {
+        return deptId;
+    }
+
+    public void setDeptId(int deptId) {
+        this.deptId = deptId;
+    }
+
+    public String getDeptName() {
+        return deptName;
+    }
+
+    public void setDeptName(String deptName) {
+        this.deptName = deptName;
+    }
+
+    public Dept() {
+    }
+
+    public Dept(int deptId, String deptName) {
+        this.deptId = deptId;
+        this.deptName = deptName;
+    }
+
+    @Override
+    public String toString() {
+        return "Dept{" +
+                "deptId=" + deptId +
+                ", deptName='" + deptName + '\'' +
+                '}';
+    }
+}
+```
+
+```java
+package bean;
+
+public class Emp {
+   private int empId;
+   private String empName;
+   private String sex;
+   private int age;
+   private String tel;
+   private String passWord;
+   private int deptId;
+   private String deptName;
+
+    public Emp(int empId) {
+    }
+
+    public int getEmpId() {
+        return empId;
+    }
+
+    public void setEmpId(int empId) {
+        this.empId = empId;
+    }
+
+    public String getEmpName() {
+        return empName;
+    }
+
+    public void setEmpName(String empName) {
+        this.empName = empName;
+    }
+
+    public String getSex() {
+        return sex;
+    }
+
+    public void setSex(String sex) {
+        this.sex = sex;
+    }
+
+    public int getAge() {
+        return age;
+    }
+
+    public void setAge(int age) {
+        this.age = age;
+    }
+
+    public String getTel() {
+        return tel;
+    }
+
+    public void setTel(String tel) {
+        this.tel = tel;
+    }
+
+    public String getPassWord() {
+        return passWord;
+    }
+
+    public void setPassWord(String passWord) {
+        this.passWord = passWord;
+    }
+
+    public int getDeptId() {
+        return deptId;
+    }
+
+    public void setDeptId(int deptId) {
+        this.deptId = deptId;
+    }
+
+    public String getDeptName() {
+        return deptName;
+    }
+
+    public void setDeptName(String deptName) {
+        this.deptName = deptName;
+    }
+
+    public Emp() {
+    }
+
+    public Emp(int empId, String empName, String sex, int age, String tel, String passWord, int deptId, String deptName) {
+        this.empId = empId;
+        this.empName = empName;
+        this.sex = sex;
+        this.age = age;
+        this.tel = tel;
+        this.passWord = passWord;
+        this.deptId = deptId;
+        this.deptName = deptName;
+    }
+
+    @Override
+    public String toString() {
+        return "Emp{" +
+                "empId=" + empId +
+                ", empName='" + empName + '\'' +
+                ", sex='" + sex + '\'' +
+                ", age=" + age +
+                ", tel='" + tel + '\'' +
+                ", passWord='" + passWord + '\'' +
+                ", deptId=" + deptId +
+                ", deptName='" + deptName + '\'' +
+                '}';
+    }
+}
+```
+
+```java
+package servlet;
+
+import bean.Dept;
+import bean.Emp;
+import util.DBUtil;
+
+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("utf-8");
+        String sql="select * from Dept";
+        ResultSet rst = DBUtil.query(sql);
+        ArrayList<Dept> list = new ArrayList<>();
+        try {
+            while (rst.next()) {
+                int deptId = rst.getInt("deptId");
+                String deptName = rst.getString("deptName");
+                Dept dept = new Dept(deptId, deptName);
+                list.add(dept);
+            }
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+        request.setAttribute("list",list);
+        request.getRequestDispatcher("/WEB-INF/add.jsp").forward(request,response);
+    }
+
+    @Override
+    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+
+    }
+}
+```
+
+```java
+package servlet;
+
+import bean.Dept;
+import bean.Emp;
+import util.DBUtil;
+
+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("/delete")
+public class Delete extends HttpServlet {
+    @Override
+    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        String sql="select * from Emp";
+        ResultSet rst = DBUtil.query(sql);
+        ArrayList<Emp> list = new ArrayList<>();
+        try {
+            while (rst.next()) {
+                int empId = rst.getInt("empId");
+                Emp emp = new Emp(empId);
+                list.add(emp);
+            }
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+        request.setAttribute("list",list);
+        request.getRequestDispatcher("/WEB-INF/delete.jsp").forward(request,response);
+    }
+
+    @Override
+    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        request.setCharacterEncoding("utf-8");
+        response.setContentType("text/html;charset=utf-8");
+        String sql="delete from Emp where EmpID=?";
+        int empId = Integer.parseInt(request.getParameter("empId"));
+        int i = DBUtil.update(sql, empId);
+        if(i>0){
+            request.setAttribute("msg","删除成功！");
+            response.sendRedirect("/list");
+        }else{
+            request.setAttribute("msg","删除失败！");
+            request.getRequestDispatcher("/WEB-INF/msg.jsp").forward(request,response);
+        }
+    }
+}
+```
+
+```java
+package servlet;
+
+import bean.Emp;
+import util.DBUtil;
+
+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("/list")
+public class List extends HttpServlet {
+    @Override
+    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        String sql="select * from Dept d,Emp e where d.DeptID=e.DeptID";
+        ResultSet rst = DBUtil.query(sql);
+        ArrayList<Emp> list = new ArrayList<>();
+        try {
+            while (rst.next()) {
+                int empId = rst.getInt("empId");
+                String empName = rst.getString("empName");
+                String sex = rst.getString("sex");
+                int age = rst.getInt("age");
+                String tel = rst.getString("tel");
+                String passWord = rst.getString("passWord");
+                int deptId = rst.getInt("deptId");
+                String deptName = rst.getString("deptName");
+                Emp emp = new Emp(empId, empName, sex, age, tel, passWord, deptId, deptName);
+                list.add(emp);
+            }
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+        request.setAttribute("list",list);
+        request.getRequestDispatcher("/WEB-INF/list.jsp").forward(request,response);
+    }
+
+    @Override
+    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        request.setCharacterEncoding("utf-8");
+        String user = request.getParameter("user");
+        String sql="select * from Dept d,Emp e where d.DeptID=e.DeptID and empName like ?";
+        ResultSet rst = DBUtil.query(sql,"%"+user+"%");
+        ArrayList<Emp> list = new ArrayList<>();
+        try {
+            while (rst.next()) {
+                int empId = rst.getInt("empId");
+                String empName = rst.getString("empName");
+                String sex = rst.getString("sex");
+                int age = rst.getInt("age");
+                String tel = rst.getString("tel");
+                String passWord = rst.getString("passWord");
+                int deptId = rst.getInt("deptId");
+                String deptName = rst.getString("deptName");
+                Emp emp = new Emp(empId, empName, sex, age, tel, passWord, deptId, deptName);
+                list.add(emp);
+            }
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+        request.setAttribute("list",list);
+        request.getRequestDispatcher("/WEB-INF/list.jsp").forward(request,response);
+    }
+}
+```
+
+```java
+package servlet;
+
+import util.DBUtil;
+
+import javax.servlet.*;
+import javax.servlet.http.*;
+import javax.servlet.annotation.*;
+import java.io.IOException;
+
+@WebServlet("/save")
+public class Save extends HttpServlet {
+    @Override
+    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+
+    }
+
+    @Override
+    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        request.setCharacterEncoding("utf-8");
+        response.setContentType("text/html;charset=utf-8");
+        String empName = request.getParameter("empName");
+        String sex = request.getParameter("sex");
+        String age = request.getParameter("age");
+        String tel = request.getParameter("tel");
+        int deptName = Integer.parseInt(request.getParameter("deptName"));
+        String sql="insert into Emp values (0,?,?,?,?,0,?)";
+        int i = DBUtil.update(sql,empName,sex,age,tel,deptName);
+        if(i>0){
+            request.setAttribute("msg","添加成功！");
+            response.sendRedirect("/list");
+        }else{
+            request.setAttribute("msg","添加失败！");
+            request.getRequestDispatcher("/WEB-INF/msg.jsp").forward(request,response);
+        }
+
+    }
+}
+```
+
+```java
+package servlet;
+
+import bean.Dept;
+import util.DBUtil;
+
+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("/update")
+public class Update extends HttpServlet {
+    @Override
+    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        request.setCharacterEncoding("utf-8");
+        String sql="select * from Dept";
+        ResultSet rst = DBUtil.query(sql);
+        ArrayList<Dept> list = new ArrayList<>();
+        try {
+            while (rst.next()) {
+                int deptId = rst.getInt("deptId");
+                String deptName = rst.getString("deptName");
+                Dept dept = new Dept(deptId, deptName);
+                list.add(dept);
+            }
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+        request.setAttribute("list",list);
+        request.getRequestDispatcher("/WEB-INF/update.jsp").forward(request,response);
+    }
+
+    @Override
+    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        request.setCharacterEncoding("utf-8");
+        response.setContentType("text/html;charset=utf-8");
+        String empId = request.getParameter("empId");
+        String empName = request.getParameter("empName");
+        String sex = request.getParameter("sex");
+        String age = request.getParameter("age");
+        String tel = request.getParameter("tel");
+        int deptName = Integer.parseInt(request.getParameter("deptName"));
+        String sql="update Emp set EmpName=?,Sex=?,Age=?,Tel=?,DeptID=? where EmpID=?";
+        int i = DBUtil.update(sql, empName, sex, age, tel, deptName,empId);
+        if(i>0){
+            request.setAttribute("msg","修改成功！");
+            response.sendRedirect("list");
+        }else{
+            request.setAttribute("msg","修改失败！");
+            request.getRequestDispatcher("/WEB-INF/msg.jsp").forward(request,response);
+        }
+    }
+}
+```
+
+```java
+package util;
+
+import java.net.ConnectException;
+import java.sql.*;
+
+public class DBUtil {
+   private static String url="jdbc:mysql:///CompanyManager?characterEncoding=utf8";
+   private static String user="root";
+   private static String pwd="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, pwd);
+       return conn;
+   }
+   public static ResultSet query(String sql,Object... keys) {
+       ResultSet rst = null;
+       try {
+           Connection conn = getConn();
+           PreparedStatement pst = conn.prepareStatement(sql);
+           for (int i = 0; i < keys.length; i++) {
+               pst.setObject((i + 1), keys[i]);
+           }
+           rst = pst.executeQuery();
+       } catch (SQLException e) {
+           e.printStackTrace();
+       }
+       return rst;
+   }
+
+   public static int update(String sql,Object... keys){
+       int rst = 0;
+       try {
+           Connection conn = getConn();
+           PreparedStatement pst = conn.prepareStatement(sql);
+           for (int i = 0; i < keys.length; i++) {
+               pst.setObject((i + 1), keys[i]);
+           }
+           rst = pst.executeUpdate();
+       } catch (SQLException e) {
+           e.printStackTrace();
+       }
+       return rst;
+   }
+
+   public static void close(Connection conn,PreparedStatement pst,ResultSet rst){
+       try {
+           if (rst != null) {
+               rst.close();
+           }
+           if (pst != null) {
+               pst.close();
+           }
+           if (conn != null) {
+               conn.close();
+           }
+       } catch (SQLException e) {
+           e.printStackTrace();
+       }
+   }
+}
+```
+
+```jsp
+<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
+<%--
+  Created by IntelliJ IDEA.
+  User: Administrator
+  Date: 2023-06-10
+  Time: 17:17
+  To change this template use File | Settings | File Templates.
+--%>
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<html>
+<head>
+    <title>添加员工</title>
+</head>
+<body>
+    <h3>添加员工</h3>
+    <table border="1">
+        <form action="/save" method="post">
+            <tr>
+                <td>姓名</td>
+                <td>
+                    <input type="text" name="empName">
+                </td>
+            </tr>
+            <tr>
+                <td>性别</td>
+                <td>
+                    <input type="radio" name="sex">男
+                    <input type="radio" name="sex">女
+                </td>
+
+            </tr>
+            <tr>
+                <td>年龄</td>
+                <td>
+                    <input type="text" name="age">
+                </td>
+            </tr>
+            <tr>
+                <td>电话</td>
+                <td>
+                    <input type="text" name="tel">
+                </td>
+            </tr>
+            <tr>
+                <td>所属部门</td>
+                <td>
+                    <select name="deptName" id="">
+                        <c:forEach items="${list}" var="a">
+                            <option value="${a.deptId}">${a.deptName}</option>
+                        </c:forEach>
+                    </select>
+                </td>
+            </tr>
+            <tr>
+                <td colspan="2" align="center">
+                    <input type="submit" value="提交">
+                </td>
+            </tr>
+        </form>
+    </table>
+</body>
+</html>
+```
+
+```jsp
+<%--
+  Created by IntelliJ IDEA.
+  User: Administrator
+  Date: 2023-06-11
+  Time: 19:37
+  To change this template use File | Settings | File Templates.
+--%>
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<html>
+<head>
+    <title>删除员工</title>
+</head>
+<body>
+    <h3>删除员工</h3>
+        <form action="/delete" method="post">
+            编号：<input type="text" name="empId">
+            <input type="submit" value="删除">
+        </form>
+</body>
+</html>
+```
+
+```jsp
+<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
+<%--
+  Created by IntelliJ IDEA.
+  User: Administrator
+  Date: 2023-06-10
+  Time: 15:37
+  To change this template use File | Settings | File Templates.
+--%>
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<html>
+<head>
+    <title>员工信息</title>
+</head>
+<body>
+    <form action="/list" method="post">
+        姓名：<input type="text" name="user">&nbsp; &nbsp; &nbsp; <input type="submit" value="查询">
+    </form>
+    <table border="1">
+        <tr>
+            <th>编号</th>
+            <th>姓名</th>
+            <th>性别</th>
+            <th>年龄</th>
+            <th>电话</th>
+            <th>所属部门</th>
+        </tr>
+        <c:forEach items="${list}" var="e">
+            <tr>
+                <td>${e.empId}</td>
+                <td>${e.empName}</td>
+                <td>${e.sex}</td>
+                <td>${e.age}</td>
+                <td>${e.tel}</td>
+                <td>${e.deptName}</td>
+            </tr>
+        </c:forEach>
+        <tr>
+            <td colspan="6" align="center">
+                <a href="/add"><button>添加</button></a>&nbsp;
+                <a href="/update"><button>修改</button></a>&nbsp;
+                <a href="/delete"><button>删除</button></a>
+            </td>
+        </tr>
+    </table>
+</body>
+</html>
+```
+
+```jsp
+<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
+<%--
+  Created by IntelliJ IDEA.
+  User: Administrator
+  Date: 2023-06-11
+  Time: 20:05
+  To change this template use File | Settings | File Templates.
+--%>
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<html>
+<head>
+    <title>修改员工</title>
+</head>
+<body>
+    <h3>修改员工</h3>
+        <form action="/update" method="post"><br>
+            编号：&nbsp; <input type="text" name="empId"><br>
+            姓名：&nbsp; <input type="text" name="empName"><br>
+            性别：&nbsp;
+            <input type="radio" name="sex">男
+            <input type="radio" name="sex">女<br>
+            年龄：&nbsp; <input type="text" name="age"><br>
+            电话：&nbsp; <input type="text" name="tel"><br>
+            所属部门：
+            <select name="deptName" id="">
+                <c:forEach items="${list}" var="u">
+                    <option value="${u.deptId}">${u.deptName}</option>
+                </c:forEach>
+            </select><br>
+            <input type="submit" value="修改">
+        </form>
+</body>
+</html>
+```
+
+```jsp
+<%--
+  Created by IntelliJ IDEA.
+  User: Administrator
+  Date: 2023-06-11
+  Time: 19:09
+  To change this template use File | Settings | File Templates.
+--%>
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<html>
+<head>
+    <title>友情提示</title>
+</head>
+<body>
+${msg}
+<hr>
+<a href="/list">返回列表</a>
+</body>
+</html>
+```
+