工具类
package org.springblade.questionnaire.redis;import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;import java.util.Map;
import java.util.concurrent.TimeUnit;@Service
public class RedisService {@Autowiredprivate StringRedisTemplate stringRedisTemplate;private final ObjectMapper objectMapper = new ObjectMapper();// 存储对象到Redispublic void setObjectToRedis(String key, Object obj) {try {// 将对象序列化为JSON字符串String value = objectMapper.writeValueAsString(obj);// 使用StringRedisTemplate将JSON字符串存储到RedisstringRedisTemplate.opsForValue().set(key, value);} catch (JsonProcessingException e) {throw new RuntimeException("Failed to serialize object to JSON", e);}}// 从Redis获取对象public <T> T getObjectFromRedis(String key, Class<T> clazz) {String json = stringRedisTemplate.opsForValue().get(key);if (json != null) {try {// 将JSON字符串反序列化为对象return objectMapper.readValue(json, clazz);} catch (Exception e) {throw new RuntimeException("Failed to deserialize JSON to object", e);}}return null;}// 存储对象数组到Redispublic <T> void setArrayToRedis(String key, T[] array) {try {// 将对象数组序列化为JSON字符串String value = objectMapper.writeValueAsString(array);// 使用StringRedisTemplate将JSON字符串存储到RedisstringRedisTemplate.opsForValue().set(key, value);} catch (JsonProcessingException e) {throw new RuntimeException("Failed to serialize object array to JSON", e);}}// 从Redis获取对象数组@SuppressWarnings("unchecked")public <T> T[] getArrayFromRedis(String key, Class<T[]> clazz) {String json = stringRedisTemplate.opsForValue().get(key);if (json != null) {try {// 将JSON字符串反序列化为对象数组return objectMapper.readValue(json, clazz);} catch (Exception e) {throw new RuntimeException("Failed to deserialize JSON to object array", e);}}return null;}// 存储对象到Redis并设置过期时间public void setObjectToRedisWithTime(String key, Object obj, long timeout, TimeUnit timeUnit) {try {// 将对象序列化为JSON字符串String value = objectMapper.writeValueAsString(obj);// 使用StringRedisTemplate将JSON字符串存储到Redis并设置过期时间stringRedisTemplate.opsForValue().set(key, value, timeout, timeUnit);} catch (JsonProcessingException e) {throw new RuntimeException("Failed to serialize object to JSON", e);}}// 存储对象数组到Redis并设置过期时间public <T> void setArrayToRedisWithTime(String key, T[] array, long timeout, TimeUnit timeUnit) {try {// 将对象数组序列化为JSON字符串String value = objectMapper.writeValueAsString(array);// 使用StringRedisTemplate将JSON字符串存储到Redis并设置过期时间stringRedisTemplate.opsForValue().set(key, value, timeout, timeUnit);} catch (JsonProcessingException e) {throw new RuntimeException("Failed to serialize object array to JSON", e);}}// 存储字符串到Redis并设置过期时间public void setStringToRedis(String key, String value, long timeout, TimeUnit timeUnit) {// 使用StringRedisTemplate将字符串存储到Redis并设置过期时间stringRedisTemplate.opsForValue().set(key, value, timeout, timeUnit);}// 从Redis获取字符串public String getStringFromRedis(String key) {return stringRedisTemplate.opsForValue().get(key);}// 存储 Map<String, Map<String, String>> 到 Redis 并设置过期时间public void setTranslationsToRedis(String key, Map<String, Map<String, String>> translations, long timeout, TimeUnit timeUnit) {try {// 将 Map 序列化为 JSON 字符串String value = objectMapper.writeValueAsString(translations);// 使用 StringRedisTemplate 将 JSON 字符串存储到 Redis 并设置过期时间stringRedisTemplate.opsForValue().set(key, value, timeout, timeUnit);} catch (JsonProcessingException e) {throw new RuntimeException("Failed to serialize translations map to JSON", e);}}// 从 Redis 获取 Map<String, Map<String, String>>public Map<String, Map<String, String>> getTranslationsFromRedis(String key) {String json = stringRedisTemplate.opsForValue().get(key);if (json != null) {try {// 将 JSON 字符串反序列化为 Map<String, Map<String, String>>return objectMapper.readValue(json, new TypeReference<Map<String, Map<String, String>>>() {});} catch (Exception e) {throw new RuntimeException("Failed to deserialize JSON to translations map", e);}}return null;}
}引用
@Autowiredprivate RedisService redisService;调用方法
一般设置过期时间一天，看情况而定
)
