diff --git "a/53 \345\221\250\345\216\232\350\276\260/package Web\350\241\250\345\215\225\344\270\216\346\225\260\346\215\256\345\272\223\350\277\236\346\216\245;import javax.md" "b/53 \345\221\250\345\216\232\350\276\260/package Web\350\241\250\345\215\225\344\270\216\346\225\260\346\215\256\345\272\223\350\277\236\346\216\245;import javax.md"
new file mode 100644
index 0000000000000000000000000000000000000000..a382190b4782c80b575b87a3c590b644f8269522
--- /dev/null
+++ "b/53 \345\221\250\345\216\232\350\276\260/package Web\350\241\250\345\215\225\344\270\216\346\225\260\346\215\256\345\272\223\350\277\236\346\216\245;import javax.md"	
@@ -0,0 +1,189 @@
+```java
+package Web表单与数据库连接;
+
+import javax.servlet.*;
+import javax.servlet.http.*;
+import javax.servlet.annotation.*;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+
+@WebServlet(name = "Query", value = "/Query")
+public class Query extends HttpServlet {
+    @Override
+    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        request.setCharacterEncoding("utf-8");
+        response.setContentType("text/html;charset=utf-8");
+        PrintWriter writer = response.getWriter();
+        String id = request.getParameter("qid");
+        String sql;
+        ResultSet rs;
+        if (id.equals(null)) {
+            sql = "select * from t1";
+            rs = Driver.query(sql);
+        } else {
+            sql = "select * from t1 where id like ?";
+            rs = Driver.query(sql, id);
+        }
+        System.out.println(sql);
+        System.out.println(id);
+        try {
+            if (rs.isBeforeFirst()) {
+                writer.write("数据库中没有任何信息");
+            } else {
+                while (rs.next()) {
+                    String Id = rs.getString(1);
+                    String name = rs.getString(2);
+                    String sex = rs.getString(3);
+                    writer.write("\tID=" + Id +
+                            "\tname=" + name +
+                            "\tsex=" + sex);
+                }
+            }
+        } catch (SQLException e) {
+            writer.write("查询错误");
+        }
+    }
+
+    @Override
+    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        doGet(request, response);
+    }
+}
+```
+
+```java
+package Web表单与数据库连接;
+
+import javax.servlet.*;
+import javax.servlet.http.*;
+import javax.servlet.annotation.*;
+import java.io.IOException;
+import java.io.PrintWriter;
+
+@WebServlet(name = "Insert", value = "/Insert")
+public class Insert extends HttpServlet {
+    @Override
+    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        response.setContentType("text/html;charset=utf-8");
+        request.setCharacterEncoding("utf-8");
+        PrintWriter writer = response.getWriter();
+        String sql = "insert into t1 values(?,?,?)";
+        String id = request.getParameter("id");
+        String name = request.getParameter("name");
+        String sex = request.getParameter("sex");
+        System.out.println(id);
+        System.out.println(name);
+        System.out.println(sex);
+        int i = Driver.update(sql, id, name, sex);
+        if (i > 0) {
+            writer.write("插入成功，变化了" + i + "条数据");
+        } else {
+            writer.write("插入失败");
+        }
+    }
+
+    @Override
+    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        doGet(request, response);
+    }
+}
+```
+
+```java
+package Web表单与数据库连接;
+
+import java.sql.*;
+
+/**
+ * @author zhc
+ */
+public class Driver {
+    private static String Driver = "com.mysql.jdbc.Driver";
+    private static String URL = "jdbc:mysql:///test?useSSL=false&unicode=true&characterEncoding=utf8";
+    private static String User = "root";
+    private static String Paw = "root";
+
+    //注册驱动
+    static {
+        try {
+            Class.forName(Driver);
+        } catch (ClassNotFoundException e) {
+            System.out.println("驱动注册失败");
+        }
+    }
+
+    //连接数据库
+    public static Connection conn() {
+        System.out.println("连接数据中…");
+        Connection conn = null;
+        try {
+            conn = DriverManager.getConnection(URL, User, Paw);
+        } catch (SQLException e) {
+            System.out.println("数据库连接失败");
+            e.printStackTrace();
+        }
+        return conn;
+    }
+
+    //查询
+    public static ResultSet query(String sql,String ...keys){
+            PreparedStatement pst;
+            ResultSet rs=null;
+        try {
+            pst = conn().prepareStatement(sql);
+             System.out.println("查询中...");
+            for (int i = 0; i < keys.length; i++) {
+                pst.setString((i+1),keys[i]);
+            }
+            rs = pst.executeQuery();
+        } catch (SQLException e) {
+            System.out.println("查询错误");
+            e.printStackTrace();
+        }
+        return rs;
+    }
+
+    //更新
+    public static int update(String sql,String ...keys ){
+            int i = 0;
+        try {
+            PreparedStatement pst = conn().prepareStatement(sql);
+            for (int j = 0; j < keys.length; j++) {
+                pst.setString((j+1),keys[j]);
+            }
+            i = pst.executeUpdate();
+        } catch (SQLException e) {
+            System.out.println("更新失败");
+            e.printStackTrace();
+        }
+    return i;
+    }
+}
+```
+
+```html
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>插入</title>
+</head>
+<body>
+<h1>插入</h1>
+<form action="/Insert">
+    ID：<input type="text" name="id" id="id"><br>
+    姓名：<input type="text" name="name" id="name"><br>
+    性别：<input type="text" name="sex" id="sex"><br>
+    <input type="submit" value="插入">
+</form>
+<br><br>
+<form action="/Query">
+    <h1>查询</h1>
+    请输入要查询的ID:<input type="text" name="qid" id="qid"><br>
+    <input type="submit" value="查询">
+</form>
+</body>
+</html>
+```
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