Spring 整合 Jedis

spring 整合 jedis

1. 单机版整合

   1. 添加配置文件

      2. 测试代码

      /**
       * 单机版测试 整合spring
       * 
      Title: testSpringJedisSingle
       * 
      Description: 
       */
      @Test
      public void testSpringJedisSingle() {
          ApplicationContext applicationContext = new ClassPathXmlApplicationContext("classpath:spring/applicationContext-*.xml");
          JedisPool pool = (JedisPool) applicationContext.getBean("redisClient");
          Jedis jedis = pool.getResource();
          String string = jedis.get("key1");
          System.out.println(string);
          jedis.close();
          pool.close();
      }
      

2. 集群版配置

   1. 配置
   2. 测试代码

   @Test
   public void testSpringJedisCluster() {
       ApplicationContext applicationContext = new ClassPathXmlApplicationContext("classpath:spring/applicationContext-*.xml");
       JedisCluster jedisCluster =  (JedisCluster) applicationContext.getBean("redisClient");
       String string = jedisCluster.get("key1");
       System.out.println(string);
       jedisCluster.close();
   }
   

3. 添加 jedis dao 对象

   1. 接口

   public interface JedisClient {
   
       String get(String key);
       String set(String key,String value);
       String hget(String hkey, String key);
       long hset(String hkey, String key, String value);
       long incr(String key);
       long expire(String key, int second);
       long ttl(String key);
       long hdel(String key);
       long hdel(String key, String field);
   
   }
   

   2. 单机版实现

   public class JedisClientSingle implements JedisClient{
   
       @Autowired
       private JedisPool jedisPool; 
       
       @Override
       public String get(String key) {
           Jedis jedis = jedisPool.getResource();
           String string = jedis.get(key);
           jedis.close();
           return string;
       }
   
       @Override
       public String set(String key, String value) {
           Jedis jedis = jedisPool.getResource();
           String string = jedis.set(key, value);
           jedis.close();
           return string;
       }
   
       @Override
       public String hget(String hkey, String key) {
           Jedis jedis = jedisPool.getResource();
           String string = jedis.hget(hkey, key);
           jedis.close();
           return string;
       }
   
       @Override
       public long hset(String hkey, String key, String value) {
           Jedis jedis = jedisPool.getResource();
           Long result = jedis.hset(hkey, key, value);
           jedis.close();
           return result;
       }
   
       @Override
       public long incr(String key) {
           Jedis jedis = jedisPool.getResource();
           Long result = jedis.incr(key);
           jedis.close();
           return result;
       }
   
       @Override
       public long expire(String key, int second) {
           Jedis jedis = jedisPool.getResource();
           Long result = jedis.expire(key, second);
           jedis.close();
           return result;
       }
   
       @Override
       public long ttl(String key) {
           Jedis jedis = jedisPool.getResource();
           Long result = jedis.ttl(key);
           jedis.close();
           return result;
       }
   
       @Override
       public long hdel(String key) {
           Jedis jedis = jedisPool.getResource();
           Long result = jedis.del(key);
           jedis.close();
           return result;
       }
   
       @Override
       public long hdel(String key, String fields) {
           Jedis jedis = jedisPool.getResource();
           Long result = jedis.hdel(key, fields);
           jedis.close();
           return result;
           
       }
   
   }
   

   3. 集群版实现

   public class JedisClientCluster implements JedisClient {
   
       @Autowired
       private JedisCluster jedisCluster;
       
       @Override
       public String get(String key) {
           return jedisCluster.get(key);
       }
   
       @Override
       public String set(String key, String value) {
           return jedisCluster.set(key, value);
       }
   
       @Override
       public String hget(String hkey, String key) {
           return jedisCluster.hget(hkey, key);
       }
   
       @Override
       public long hset(String hkey, String key, String value) {
           return jedisCluster.hset(hkey, key, value);
       }
   
       @Override
       public long incr(String key) {
           return jedisCluster.incr(key);
       }
   
       @Override
       public long expire(String key, int second) {
           return jedisCluster.expire(key, second);
       }
   
       @Override
       public long ttl(String key) {
           return jedisCluster.ttl(key);
       }
   
       @Override
       public long hdel(String key) {
           return jedisCluster.del(key);
       }
   
       @Override
       public long hdel(String key, String field) {
           return jedisCluster.hdel(key, field);
       }
   
   }
   

4. 配置文件增加 项目启动创建单例的dao对象

   1. 单机版
   2. 集群版

5. 把缓存添加到业务逻辑

   @Override
   public List getContentList(long contentCid) {
       //从缓存中取内容 开始
       try {
           String result = jedisClient.hget(INDEX_CONTENT_REDIS_KEY, contentCid + "");
           if (!StringUtils.isBlank(result)) {
               //把字符串转换成list
               List resultList = JsonUtils.jsonToList(result, TbContent.class);
               return resultList;
           }
       } catch (Exception e) {
           e.printStackTrace();
       }
       //从缓存中取内容 结束
   
       //根据内容分类id查询内容列表
       TbContentExample example = new TbContentExample();
       Criteria criteria = example.createCriteria();
       criteria.andCategoryIdEqualTo(contentCid);
       //执行查询
       List list = contentMapper.selectByExample(example);
   
       //向缓存中添加内容  开始
       try {
           //把list转换成字符串
           String cacheString = JsonUtils.objectToJson(list);
           jedisClient.hset(INDEX_CONTENT_REDIS_KEY, contentCid + "", cacheString);
       } catch (Exception e) {
           e.printStackTrace();
       }
       //向缓存中添加内容  结束
       
       return list;
   }
   

6. 缓存同步

   当后台管理系统，修改内容之后需要通知redis把修改的内容对应的分类id的key删除。