redis事物简单例子

import org.junit.Test;import redis.clients.jedis.Jedis;import redis.clients.jedis.Transaction;public class TranRedis { private Jedis js=new Jedis("localhost",6379); @Testpublic void init(){ js.select(1);//选择o号库     js.set("balance", "1000");//设置余额     js.set("debt", "0");//设置欠费;     System.out.println("数据添加成功");     System.out.println("balance:"+js.get("balance"));     System.out.println("debt:"+js.get("debt"));    }/* * 测试正常状态下 */@Test public void tran1() throws InterruptedException{ js.select(1);//选择o号库   int amtToSubtract=10;//消费js.watch("balance");//监视int balance=Integer.parseInt(js.get("balance"));//余额 if(balance>amtToSubtract){Transaction transaction=js.multi();//开启事物transaction.decrBy("balance", amtToSubtract);//余额减少transaction.incrBy("debt", amtToSubtract);//欠费增加transaction.exec();//执行事物    System.out.println("此次交易成功");    System.out.println("balance:"+js.get("balance"));    System.out.println("debt:"+js.get("debt"));  }else{js.unwatch();//不监视System.out.println("网络延时，此次交易失败！");System.out.println("数据被修改");    System.out.println("balance:"+js.get("balance"));    System.out.println("debt:"+js.get("balance"));  }}/* * 测试非正常状态下 */@Test public void tran2() throws InterruptedException{ js.select(1);//选择o号库   int amtToSubtract=10;//消费js.watch("balance");//监视for (int i = 1; i < 7; i++) {System.out.println("第"+i+"秒");Thread.sleep(1000);if(i==5){ System.out.println("在第5秒中，该余额数据已被修改");     js.set("balance", "5"); } }int balance=Integer.parseInt(js.get("balance"));//余额 if(balance>amtToSubtract){Transaction transaction=js.multi();//开启事物transaction.decrBy("balance", amtToSubtract);//余额减少transaction.incrBy("debt", amtToSubtract);//欠费增加transaction.exec(); }else{js.unwatch();System.out.println("网络延时，此次交易失败！");System.out.println("数据被修改");    System.out.println("balance:"+js.get("balance"));System.out.println("debt:"+js.get("debt"));  }}  }

1.执行init方法

2.执行tran1方法

3.执行tran2方法