IntelliJ IDEA 连接MySQL

创建一个Java工程

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mysql连接测试

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为工程导入mysql驱动

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测试代码

连接mysql数据库，创建一张表

package com.knight.demo;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;

public class JdbcDemo {
    //url
    private static String url = "jdbc:mysql://localhost:3306/mydata?serverTimezone=GMT";
    //user
    private static String user = "root";
    //password
    private static String password = "123456";

    public static void main(String[] args) {
        Connection conn = null;
        Statement stmt = null;
        try {
            //1)注册驱动程序
            Class.forName("com.mysql.cj.jdbc.Driver");
            //2)获取连接
            conn = DriverManager.getConnection(url, user, password);
            //3)准备sql语句
            String sql = "CREATE TABLE st(id INT,NAME VARCHAR(20),age INT)";
            //4)在连接基础上，创建Statement
            stmt = conn.createStatement();
            //5)执行sql,返回结果
            int count = stmt.executeUpdate(sql);
            System.out.println("影响了" + count + "行！");
            //6)关闭资源.后打开的先关闭
            stmt.close();
            conn.close();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        }

    }
}