content: package com.java2nb.novel.core.cache.impl;
  
  import com.fasterxml.jackson.annotation.JsonInclude;
  import com.fasterxml.jackson.core.JsonProcessingException;
  import com.fasterxml.jackson.databind.ObjectMapper;
  import com.java2nb.novel.core.cache.CacheService;
  import jakarta.annotation.PostConstruct;
  import lombok.RequiredArgsConstructor;
  import lombok.extern.slf4j.Slf4j;
  import org.springframework.data.redis.core.StringRedisTemplate;
  import org.springframework.stereotype.Service;
  
  import java.util.List;
  import java.util.concurrent.TimeUnit;
  
  /**
   * @author xxy
   */
  @Slf4j
  @RequiredArgsConstructor
  @Service
  public class RedisServiceImpl implements CacheService {
  
      private final StringRedisTemplate stringRedisTemplate;
  
      private ObjectMapper objectMapper;
  
      @PostConstruct
      public void init() {
          objectMapper = new ObjectMapper();
          objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
      }
  
  
      @Override
      public String get(String key) {
          return stringRedisTemplate.opsForValue().get(key);
      }
  
      @Override
      public void set(String key, String value) {
          stringRedisTemplate.opsForValue().set(key, value);
      }
  
      @Override
      public void set(String key, String value, long timeout) {
          stringRedisTemplate.opsForValue().set(key, value, timeout, TimeUnit.SECONDS);
  
      }
  
      @Override
      public <T> T getObject(String key, Class<T> clazz) {
          String result = get(key);
          if (result != null) {
              try {
                  return objectMapper.readValue(result, clazz);
              } catch (JsonProcessingException e) {
                  throw new RuntimeException(e);
              }
          }
          return null;
      }
  
      @Override
      public <T> List<T> getList(String key, Class<T> clazz) {
          String result = get(key);
          if (result != null) {
              try {
                  return objectMapper.readValue(result,
                      objectMapper.getTypeFactory().constructCollectionType(List.class, clazz));
              } catch (JsonProcessingException e) {
                  throw new RuntimeException(e);
              }
          }
          return null;
      }
  
      @Override
      public void setObject(String key, Object value) {
          if (value != null) {
              try {
                  set(key, objectMapper.writeValueAsString(value));
              } catch (JsonProcessingException e) {
                  throw new RuntimeException(e);
              }
          }
      }
  
      @Override
      public void setObject(String key, Object value, long timeout) {
          if (value != null) {
              try {
                  set(key, objectMapper.writeValueAsString(value), timeout);
              } catch (JsonProcessingException e) {
                  throw new RuntimeException(e);
              }
          }
      }
  
      @Override
      public void del(String key) {
          stringRedisTemplate.delete(key);
      }
  
      @Override
      public boolean contains(String key) {
          return stringRedisTemplate.hasKey(key);
      }
  
      @Override
      public void expire(String key, long timeout) {
          stringRedisTemplate.expire(key, timeout, TimeUnit.SECONDS);
      }
  
  }
  