项目整合SpringDataRedis
1:准备工作
先导入redis和jedis依赖,在配置redis-config.properties 和applicationContext-redis.xml (详细配置信息及入门demo见我上一篇博客https://www.cnblogs.com/wangju/p/11900817.html)
2:在业务逻辑层实现
@Autowired
private RedisTemplate redisTemplate;
@Override
public List<TbContent> findByCategoryId(Long categoryId) {
List<TbContent> contentList= (List<TbContent>) redisTemplate.boundHashOps("content").get(categoryId);
if(contentList==null){
System.out.println("从数据库读取数据放入缓存");
//根据广告分类ID查询广告列表
TbContentExample contentExample=new TbContentExample();
Criteria criteria2 = contentExample.createCriteria();
criteria2.andCategoryIdEqualTo(categoryId);
criteria2.andStatusEqualTo("1");//开启状态
contentExample.setOrderByClause("sort_order");//排序
contentList = contentMapper.selectByExample(contentExample);//获取广告列表
redisTemplate.boundHashOps("content").put(categoryId, contentList);//存入缓存
}else{
System.out.println("从缓存读取数据");
}
return contentList;
}