Java简单使用redis-zset实现排行榜

 <dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-data-redis</artifactId>
  </dependency>

@Autowired
public RedisTemplate redisTemplate;

@Data
public class RangeVo implements Serializable {

 private String shopName;

 private Double shopPrice;
 
}

 @Test
 public void getzset4(){

  String keyModel = "testList";
  for (int i = 0; i < 10 ; i++) {
   int score = new Random().nextInt(50);
   String ss = "shop"+i;
   redisTemplate.opsForZSet().add(keyModel,ss,score);
  }
 }

@Test
 public void setOneValue(){
  String keyModel = "testList";
  String ss = "shop8";

  Double aDouble = redisTemplate.opsForZSet().incrementScore(keyModel, ss, 1);

  System.out.println(aDouble);
 }

@Test
 public void getList(){

  String key = "testList";

  List<RangeVo> list = new ArrayList<>();
  /** 从小到大排序 返回value 和 score* 参数注释 key 为有序集合的key，1，50 是分数范围 1-50，0 是偏移量即从哪条数据开始排序， 5是取5条满足条件的数据*/
  Set<ZSetOperations.TypedTuple<Object>> set = redisTemplate.opsForZSet().rangeByScoreWithScores(key,1,50,0,5);
  Iterator<ZSetOperations.TypedTuple<Object>> iterator = set.iterator();
  while (iterator.hasNext()){
   ZSetOperations.TypedTuple<Object> next = iterator.next();
   RangeVo rangeVo = new RangeVo();
   rangeVo.setShopName((String) next.getValue());
   rangeVo.setShopPrice(next.getScore());
   list.add(rangeVo);
  }

  System.out.println(list);
 }