JDBC使用connection进行事务管理

public class JDBCDemo {
    
    
    public static void main(String[] args) throws Exception {
    
    
        // 0.需要将复制进来的jar包右键选择add ad library
        // 1.注册驱动
        Class.forName("com.mysql.jdbc.Driver");

        // 2.获取连接
        // String url = "jdbc:mysql://127.0.0.1:3306/test230615?useSSL=false";
        String url = "jdbc:mysql:///test230615?useSSL=false";
        String username = "";
        String password = "";
        Connection connection = DriverManager.getConnection(url, username, password);

        // 3.定义sql
        String sql1 = "update account set money = 1000 where id = 1";
        String sql2 = "update account set money = 1000 where id = 2";

        // 4.获取执行sql的对象 statement
        Statement statement = connection.createStatement();


        // 开启事务
        // ctrl+alt+t添加try catch将sql执行过程包裹起来
        try {
    
    
            // 开启事务
            connection.setAutoCommit(false);

            // 执行sql
            int count1 = statement.executeUpdate(sql1);
            System.out.println(count1);
            int i =1/0; // 添加异常
            int count2 = statement.executeUpdate(sql2);
            System.out.println(count2);

            // 提交事务
            connection.commit();
        } catch (Exception e) {
    
    
            // 回滚事务
            connection.rollback();
            e.printStackTrace();
        }

        // 7.释放资源
        connection.close();
        statement.close();
    }