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 |  |  | package com.genersoft.iot.vmp.utils.redis;
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 |  |  | 
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 |  |  | import java.util.ArrayList;
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 |  |  | import java.util.List;
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 |  |  | import java.util.Map;
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 |  |  | import java.util.Set;
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 |  |  | import java.util.*;
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 |  |  | import java.util.concurrent.TimeUnit;
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 |  |  | 
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 |  |  | import org.springframework.beans.factory.annotation.Autowired;
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 |  |  | import org.springframework.data.redis.core.RedisTemplate;
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 |  |  | import org.springframework.dao.DataAccessException;
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 |  |  | import org.springframework.data.redis.connection.RedisConnection;
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 |  |  | import org.springframework.data.redis.core.*;
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 |  |  | import org.springframework.stereotype.Component;
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 |  |  | import org.springframework.util.CollectionUtils;
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 |  |  | 
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 |  |  | /**    
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 |  |  |  * @Description:Redis工具类
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 |  |  |  * @author: songww
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 |  |  |  * @author: swwheihei
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 |  |  |  * @date:   2020年5月6日 下午8:27:29     
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 |  |  |  */
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 |  |  | @Component
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 |  |  | 
 |  |  |             return 0;
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 |  |  |         }
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 |  |  |     }
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 |  |  | //    ============================== ZSet ==============================
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 |  |  | 
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 |  |  |     /**
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 |  |  |      * 添加一个元素, zset与set最大的区别就是每个元素都有一个score,因此有个排序的辅助功能;  zadd
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 |  |  |      *
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 |  |  |      * @param key
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 |  |  |      * @param value
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 |  |  |      * @param score
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 |  |  |      */
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 |  |  |     public void zAdd(String key, String value, double score) {
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 |  |  |         redisTemplate.opsForZSet().add(key, value, score);
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 |  |  |     }
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 |  |  | 
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 |  |  |     /**
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 |  |  |      * 删除元素 zrem
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 |  |  |      *
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 |  |  |      * @param key
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 |  |  |      * @param value
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 |  |  |      */
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 |  |  |     public void zRemove(String key, String value) {
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 |  |  |         redisTemplate.opsForZSet().remove(key, value);
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 |  |  |     }
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 |  |  | 
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 |  |  |     /**
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 |  |  |      * score的增加or减少 zincrby
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 |  |  |      *
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 |  |  |      * @param key
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 |  |  |      * @param value
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 |  |  |      * @param score
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 |  |  |      */
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 |  |  |     public Double zIncrScore(String key, String value, double score) {
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 |  |  |         return redisTemplate.opsForZSet().incrementScore(key, value, score);
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 |  |  |     }
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 |  |  | 
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 |  |  |     /**
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 |  |  |      * 查询value对应的score   zscore
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 |  |  |      *
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 |  |  |      * @param key
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 |  |  |      * @param value
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 |  |  |      * @return
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 |  |  |      */
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 |  |  |     public Double zScore(String key, String value) {
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 |  |  |         return redisTemplate.opsForZSet().score(key, value);
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 |  |  |     }
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 |  |  | 
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 |  |  |     /**
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 |  |  |      * 判断value在zset中的排名  zrank
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 |  |  |      *
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 |  |  |      * @param key
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 |  |  |      * @param value
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 |  |  |      * @return
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 |  |  |      */
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 |  |  |     public Long zRank(String key, String value) {
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 |  |  |         return redisTemplate.opsForZSet().rank(key, value);
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 |  |  |     }
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 |  |  | 
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 |  |  |     /**
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 |  |  |      * 返回集合的长度
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 |  |  |      *
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 |  |  |      * @param key
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 |  |  |      * @return
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 |  |  |      */
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 |  |  |     public Long zSize(String key) {
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 |  |  |         return redisTemplate.opsForZSet().zCard(key);
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 |  |  |     }
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 |  |  | 
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 |  |  |     /**
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 |  |  |      * 查询集合中指定顺序的值, 0 -1 表示获取全部的集合内容  zrange
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 |  |  |      *
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 |  |  |      * 返回有序的集合,score小的在前面
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 |  |  |      *
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 |  |  |      * @param key
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 |  |  |      * @param start
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 |  |  |      * @param end
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 |  |  |      * @return
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 |  |  |      */
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 |  |  |     public Set<String> ZRange(String key, int start, int end) {
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 |  |  |         return redisTemplate.opsForZSet().range(key, start, end);
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 |  |  |     }
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 |  |  |     /**
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 |  |  |      * 查询集合中指定顺序的值和score,0, -1 表示获取全部的集合内容
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 |  |  |      *
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 |  |  |      * @param key
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 |  |  |      * @param start
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 |  |  |      * @param end
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 |  |  |      * @return
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 |  |  |      */
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 |  |  |     public Set<ZSetOperations.TypedTuple<String>> zRangeWithScore(String key, int start, int end) {
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 |  |  |         return redisTemplate.opsForZSet().rangeWithScores(key, start, end);
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 |  |  |     }
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 |  |  |     /**
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 |  |  |      * 查询集合中指定顺序的值  zrevrange
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 |  |  |      *
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 |  |  |      * 返回有序的集合中,score大的在前面
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 |  |  |      *
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 |  |  |      * @param key
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 |  |  |      * @param start
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 |  |  |      * @param end
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 |  |  |      * @return
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 |  |  |      */
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 |  |  |     public Set<String> zRevRange(String key, int start, int end) {
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 |  |  |         return redisTemplate.opsForZSet().reverseRange(key, start, end);
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 |  |  |     }
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 |  |  |     /**
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 |  |  |      * 根据score的值,来获取满足条件的集合  zrangebyscore
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 |  |  |      *
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 |  |  |      * @param key
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 |  |  |      * @param min
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 |  |  |      * @param max
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 |  |  |      * @return
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 |  |  |      */
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 |  |  |     public Set<String> zSortRange(String key, int min, int max) {
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 |  |  |         return redisTemplate.opsForZSet().rangeByScore(key, min, max);
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 |  |  |     }
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 |  |  | 
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 |  |  | 
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 |  |  | //    ============================== List ==============================
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 |  |  | 
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 |  |  | 
 |  |  |             return 0;
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 |  |  |         }
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 |  |  |     }
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 |  |  |      | 
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 |  |  |     /**
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 |  |  |      * 模糊查询
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 |  |  |      * @param key 键
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 |  |  | 
 |  |  |      */
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 |  |  |     public List<Object> keys(String key) {
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 |  |  |         try {
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 |  |  |            Set<String> set = redisTemplate.keys(key);
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 |  |  |             Set<String> set = redisTemplate.keys(key);
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 |  |  |             return new ArrayList<>(set);
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 |  |  |         } catch (Exception e) {
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 |  |  |             e.printStackTrace();
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 |  |  |             return null;
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 |  |  |         }
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 |  |  |     }
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 |  |  | 
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 |  |  | 
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 |  |  |     /**
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 |  |  |      * 模糊查询
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 |  |  |      * @param query 查询参数
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 |  |  |      * @return
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 |  |  |      */
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 |  |  | //    public List<Object> scan(String query) {
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 |  |  | //        List<Object> result = new ArrayList<>();
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 |  |  | //        try {
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 |  |  | //            Cursor<Map.Entry<Object,Object>> cursor = redisTemplate.opsForHash().scan("field",
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 |  |  | //                    ScanOptions.scanOptions().match(query).count(1000).build());
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 |  |  | //            while (cursor.hasNext()) {
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 |  |  | //                Map.Entry<Object,Object> entry = cursor.next();
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 |  |  | //                result.add(entry.getKey());
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 |  |  | //                Object key = entry.getKey();
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 |  |  | //                Object valueSet = entry.getValue();
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 |  |  | //            }
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 |  |  | //            //关闭cursor
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 |  |  | //            cursor.close();
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 |  |  | //        } catch (Exception e) {
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 |  |  | //            e.printStackTrace();
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 |  |  | //        }
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 |  |  | //        return result;
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 |  |  | //    }
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 |  |  | 
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 |  |  |     /**
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 |  |  |      * 模糊查询
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 |  |  |      * @param query 查询参数
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 |  |  |      * @return
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 |  |  |      */
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 |  |  |     public List<Object> scan(String query) {
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 |  |  |         Set<String> keys = (Set<String>) redisTemplate.execute((RedisCallback<Set<String>>) connection -> {
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 |  |  |             Set<String> keysTmp = new HashSet<>();
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 |  |  |             Cursor<byte[]> cursor = connection.scan(new ScanOptions.ScanOptionsBuilder().match(query).count(1000).build());
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 |  |  |             while (cursor.hasNext()) {
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 |  |  |                 keysTmp.add(new String(cursor.next()));
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 |  |  |             }
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 |  |  |             return keysTmp;
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 |  |  |         });
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 |  |  | //        Set<String> keys = (Set<String>) redisTemplate.execute(new RedisCallback<Set<String>>(){
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 |  |  | //
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 |  |  | //            @Override
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 |  |  | //            public Set<String> doInRedis(RedisConnection connection) throws DataAccessException {
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 |  |  | //                Set<String> keysTmp = new HashSet<>();
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 |  |  | //                Cursor<byte[]> cursor = connection.scan(new ScanOptions.ScanOptionsBuilder().match(query).count(1000).build());
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 |  |  | //                while (cursor.hasNext()) {
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 |  |  | //                    keysTmp.add(new String(cursor.next()));
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 |  |  | //                }
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 |  |  | //            return keysTmp;
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 |  |  | //            }
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 |  |  | //        });
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 |  |  | 
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 |  |  |         return new ArrayList<>(keys);
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 |  |  |     }
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 |  |  | 
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 |  |  | }
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