redis作计数器

插入

  

   

    

     

    
    

     

      @Override
     
    
   

    

     

    
    

     
    public void incr(@Param("id") String id) {
     
    
   

    

     

    
    

     

              ValueOperations<String, Long> operations = redisTemplate.opsForValue();
     
    
   

    

     

    
    

     

              operations.increment(id, 1L);
     
    
   

    

     

    
    

     

          }
     
    
  
 

获取

  

   

    

     

    
    

     

      @Override
     
    
   

    

     

    
    

     
    public void sincr(@Param("id") String id) {
     
    
   

    

     

    
    

     

              System.out.println(getIncrValue(id));
     
    
   

    

     

    
    

     

          }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    public long getIncrValue(final String key) {
     
    
   

    

     

    
    

     
        return (long) redisTemplate.execute(new RedisCallback<Long>() {
     
    
   

    

     

    
    

     
            @Override
     
    
   

    

     

    
    

     
            public Long doInRedis(RedisConnection connection) throws DataAccessException {
     
    
   

    

     

    
    

     

                      RedisSerializer<String> serializer=redisTemplate.getStringSerializer();
     
    
   

    

     

    
    

     

                      byte[] rowkey=serializer.serialize(key);
     
    
   

    

     

    
    

     

                      byte[] rowval=connection.get(rowkey);
     
    
   

    

     

    
    

     
                try {
     
    
   

    

     

    
    

     

                          String val=serializer.deserialize(rowval);
     
    
   

    

     

    
    

     
                    return Long.parseLong(val);
     
    
   

    

     

    
    

     

                      } catch (Exception e) {
     
    
   

    

     

    
    

     
                    return 0L;
     
    
   

    

     

    
    

     

                      }
     
    
   

    

     

    
    

     

                  }
     
    
   

    

     

    
    

     

              });
     
    
   

    

     

    
    

     

          }
     
    
  
 

文章来源: baocl.blog.csdn.net，作者：小黄鸡1992，版权归原作者所有，如需转载，请联系作者。

原文链接：baocl.blog.csdn.net/article/details/83684250