1.使用IDEA自带的Database模块就可以连接到数据库
2.选择数据库MYSQL并且连接到数据库
3.可以查看数据库和表，以及进行增删改等操作
4.导入驱动
配置pom.xml 导入mysql-connector-java:5.1.49
<dependencies><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.49</version></dependency></dependencies>
5.使用JDBC操作数据库
package com.qzxiaofeng.jdbc;import java.sql.*;/*** @author 刘晓峰*/public class FirstJdbc1 {public static void main(String[] args) {String url = "jdbc:mysql://localhost:3306/xiao?useSSL=false&useUnicode=true&characterEncoding=utf-8&serverTimezone=Asia/Shanghai";PreparedStatement statement = null;ResultSet resultSet = null;Connection connection=null;try {Class.forName("com.mysql.cj.jdbc.Driver");connection = DriverManager.getConnection(url,"root","123456");statement = connection.prepareStatement("select * from t_manager");resultSet = statement.executeQuery();while (resultSet.next()){System.out.println("id:"+resultSet.getInt("id"));System.out.println("username:"+resultSet.getString("username"));System.out.println("password:"+resultSet.getString("password"));}} catch (Exception e) {e.printStackTrace();}finally {if(null!=resultSet){try {resultSet.close();} catch (SQLException exception) {exception.printStackTrace();}}if(null!=statement){try {statement.close();} catch (SQLException exception) {exception.printStackTrace();}}if(null!=connection){try {connection.close();} catch (SQLException exception) {exception.printStackTrace();}}}}}
6.程序执行结果，执行了一条查询语句
完结，加油！
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