JDBC事务的处理-----模拟银行转账业务

import cn.guangming.demo.JdbcUtils;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
/**
 * 模拟银行的转账业务
 * */
public class Transcation {
    public static void main(String[] args) {
        Connection connection=null;
        PreparedStatement preparedStatement=null;
        try {
            //1.获取连接
            connection = JdbcUtils.getConnection();
            //2.开启事务
           connection.setAutoCommit(false);
            //3.获取preparedstatement
            preparedStatement = connection.prepareStatement("UPDATE  coount SET money =money-? WHERE  sname=?");
            //4.使用preparedstatement两次更新操作
            preparedStatement.setDouble(1,500);
            preparedStatement.setString(2,"dudu");
            preparedStatement.executeUpdate();
            System.out.println(11/0);

preparedStatement=connection.prepareStatement("UPDATE  coount SET money =money-? WHERE  sname=?");
            preparedStatement.setDouble(1,500);
            preparedStatement.setString(2,"jiujiu");
            preparedStatement.executeUpdate();
            //提交事务
            connection.commit();
            System.out.println("转账成功");
        } catch (Exception e) {
            //事务回滚
            try {
                connection.rollback();
            } catch (SQLException e1) {
                e1.printStackTrace();
            }
            System.out.println("转账失败");
        }finally {
            //释放资源
            JdbcUtils.close(preparedStatement,connection);
        }
    }
}