初始化

src/main/java/com/example/demo2/MyselectServlet.java

@@ -0,0 +1,22 @@
+package com.example.demo2;
+
+import javax.servlet.http.HttpServlet;
+import java.sql.*;
+
+public class MyselectServlet extends HttpServlet {
+    public static void main(String[] args) throws ClassNotFoundException, SQLException {
+        Class.forName("com.mysql.jdbc.Driver");
+        String url = "jdbc:mysql://localhost:3306/demo1";
+        Connection connection = DriverManager.getConnection(url,"root","root");
+        //System.out.println(connection);
+        String sql = "select * from admin where id=1";
+        Statement statement = connection.createStatement();
+        ResultSet rs = statement.executeQuery(sql);
+        System.out.println(rs);
+        while (rs.next()) {
+            //System.out.println(rs.getInt("id"));
+            System.out.println(rs.getString("username"));
+            System.out.println(rs.getString("password"));
+        }
+    }
+}