JDBC与DBUtils开启事务代码示例

JAVA-WEB 事务

package demo;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;

import org.apache.commons.dbutils.QueryRunner;

import utils.C3P0Utils;

public class Test {

	public static void main(String[] args) {
		
		
		dbutilsTransaction();
	}
	
	/*
	 * 功能同jdbcTransaction
	 */
	public static void dbutilsTransaction() {
		
		//为了确保开启与执行的都是同一个conn链接需要单独获得此链接，在update中传入conn
		Connection conn = C3P0Utils.getConnection();
		QueryRunner qr = new QueryRunner();
		
		try {
			conn.setAutoCommit(false);
			
			String sql = "update account set money=money-500 where name='alex'";
			String sql1 = "update account set money=money+500 where name='alex1'";
			qr.update(conn, sql);
			int i = 1/0;
			qr.update(conn, sql1);
			
		} catch (Exception e) {
			try {
				conn.rollback();
			} catch (SQLException e1) {
				e1.printStackTrace();
			}
			e.printStackTrace();
		}finally {
			try {
				conn.commit();
				conn.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
	}
	
	public static void jdbcTransaction() {
		Connection conn = null;
		try {
			//注册驱动
			Class.forName("com.mysql.jdbc.Driver");
			//获得connection
			conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/stdb", "root", "Aa123456");
			//关闭自动提交（开启事务）
			conn.setAutoCommit(false);
			//开启事务保证事务内所有sql都执行成功，否则rollback
			Statement statement = conn.createStatement();
			String sql = "update account set money=money-500 where name='alex'";
			String sql1 = "update account set money=money+500 where name='alex1'";
			statement.executeUpdate(sql);
			//模拟发生错误
			int i = 1/0;
			statement.executeUpdate(sql1);
			
		} catch (Exception e) {
			try {
				conn.rollback();
			} catch (SQLException e1) {
				e1.printStackTrace();
			}
			e.printStackTrace();
		}finally {
			try {
				//事务是需要提交来结束的，不管有没有更改都可以在finally中提交
				conn.commit();
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
	}
}