code: public <T extends Collection<V>, V> T readAsCollection(String content,
                                                             Class<? extends Collection> collectionType,
                                                             Class<V> elementsType) {
          try {
              CollectionLikeType type = MAPPER.getTypeFactory()
                  .constructCollectionLikeType(collectionType, elementsType);
              return MAPPER.readValue(content, type);
          } catch (Exception e) {
              log.error("json解析失败，失败原因：", e);
              return null;
          }
      }
docs: 将json读取为collection类型的数据
  
  @param content        json数据
  @param collectionType collection类型
  @param elementsType   collection泛型
  @param <T>            list的实际类型
  @param <V>            list的泛型
  @return 解析结果