使用JAVA开发的秒杀系统源码

package com.demo2; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.data.redis.core.StringRedisTemplate; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; import java.util.Date; @Service @Transactional class DingdanServiceImpl implements DingdanService { @Autowired private StringRedisTemplate redisT; public String miaosha(Integer id) { /* if (!redisT.hasKey("miaosha"+id)) { throw new RuntimeException("很遗憾，秒杀活动结束了！"); }*/ //校验库存是否足够 Shangpin shangpin = checkShangpin(id); gengxinShangpin(shangpin); return createDingdan(shangpin); } private Shangpin checkShangpin(Integer sid){ //查询商品信息代码省略... Shangpin shangpin = new Shangpin(); shangpin.setShuliang(2); shangpin.setXiaoliang(2); shangpin.setMingcheng("苹果"); shangpin.setId("1"); if(shangpin.getXiaoliang().equals(shangpin.getShuliang())) { throw new RuntimeException("库存没有了。。。"); } return shangpin; } private void gengxinShangpin(Shangpin Shangpin){ //mock数据 int gengxinRows = 1; if(gengxinRows == 0){ throw new RuntimeException("秒杀失败了，请再次重试！！！"); } } private String createDingdan(Shangpin Shangpin){ ShangpinDingdan shangpinDingdan = new ShangpinDingdan(); shangpinDingdan.setSid(Shangpin.getId()); shangpinDingdan.setMingcheng(Shangpin.getMingcheng()); shangpinDingdan.setCreateTime(new Date()); //插入数据库代码省略... return shangpinDingdan.getSid(); } }