Java JDBC连接MySQL

Posted 2020-09-21 不当咸鱼

    简单地JDBC小实例

package com.javaJDBCTest;

import java.sql.DriverManager;
import java.sql.ResultSet;

import com.mysql.jdbc.Connection;
import com.mysql.jdbc.Statement;

public class JDBCTestDemo1 {

	public static void main(String args[]) throws Exception
	{
		//加载驱动类
		Class.forName("com.mysql.jdbc.Driver");
		
		//通过DriverManager获取数据库连接
		String url = "jdbc:mysql://127.0.0.1/TestDB";
		String user = "root";
		String password = "ddddd";
		Connection connection = (Connection) DriverManager.getConnection(url, user, password);
		
		//通过connection对象获取Statement对象,执行SQL语句
		Statement statement = (Statement)connection.createStatement();
		ResultSet resultSet = statement.executeQuery("select * from customers");
		
		//操作ResultSet
		while(resultSet.next())
		{
			System.out.println(resultSet.getString("cust_name"));
		}
		
		//关闭数据库连接
		resultSet.close();
		statement.close();
		connection.close();
	}
}

 这是MySQL表

 连接成功,获取表数据: