MySQL——JDBC操作事务

package com.wen.lesson04;

import com.wen.lesson02.utils.JdbcUtils;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

public class TestTransaction1 {
    public static void main(String[] args) {
        Connection conn = null;
        PreparedStatement st = null;
        ResultSet rs = null;


        try {
            conn = JdbcUtils.getConnection();
            //关闭数据库的自动提交，自动会开启事务
            conn.setAutoCommit(false);
            String sql1 = "UPDATE `account` SET money = money-100 WHERE `name`='A'";
            st = conn.prepareStatement(sql1);
            st.executeUpdate();

            String sql2 = "UPDATE `account` SET money = money+100 WHERE `name`='B'";
            st = conn.prepareStatement(sql2);
            st.executeUpdate();

            //业务完毕，提交事务
            conn.commit();
            System.out.println("提交成功");
        } catch (SQLException e) {
            try {
                conn.rollback(); //如果失败则回滚事务
            } catch (SQLException ex) {
                throw new RuntimeException(ex);
            }
            throw new RuntimeException(e);
        }finally {
            JdbcUtils.release(conn, st, rs);
        }
    }
}