SpringBoot Redis缓存配置
config
/**
* create by fzg
* 2022/7/27 11:18
*/
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import java.time.Duration;
@EnableCaching
@Configuration
public class RedisConfig extends CachingConfigurerSupport {
@Bean
public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
RedisTemplate<String, Object> template = new RedisTemplate<>();
RedisSerializer<String> redisSerializer = new StringRedisSerializer();
Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
ObjectMapper om = new ObjectMapper();
om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
jackson2JsonRedisSerializer.setObjectMapper(om);
template.setConnectionFactory(factory);
//key序列化方式
template.setKeySerializer(redisSerializer);
//value序列化
template.setValueSerializer(jackson2JsonRedisSerializer);
//value hashmap序列化
template.setHashValueSerializer(jackson2JsonRedisSerializer);
return template;
}
@Bean
public CacheManager cacheManager(RedisConnectionFactory factory) {
RedisSerializer<String> redisSerializer = new StringRedisSerializer();
Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
//解决查询缓存转换异常的问题
ObjectMapper om = new ObjectMapper();
om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
jackson2JsonRedisSerializer.setObjectMapper(om);
// 配置序列化（解决乱码的问题）,过期时间600秒
RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
.entryTtl(Duration.ofSeconds(600))
.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(redisSerializer))
.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer))
.disableCachingNullValues();
RedisCacheManager cacheManager = RedisCacheManager.builder(factory)
.cacheDefaults(config)
.build();
return cacheManager;
}
}
工具类
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;
import java.util.Collection;
import java.util.Collections;
import java.util.Date;
import java.util.List;
import java.util.concurrent.TimeUnit;
@Slf4j
@Component
public class CacheService {
@Autowired
private StringRedisTemplate redisTemplate;
private final String DEFAULT_KEY_PREFIX = "";
private final int EXPIRE_TIME = 1;
private final TimeUnit EXPIRE_TIME_TYPE = TimeUnit.DAYS;
/**
* 数据缓存至redis
*
* @param key
* @param value
* @return
*/
public <K, V> void add(K key, V value) {
try {
if (value != null) {
redisTemplate
.opsForValue()
.set(DEFAULT_KEY_PREFIX + key, JSON.toJSONString(value));
}
} catch (Exception e) {
log.error(e.getMessage(), e);
throw new RuntimeException("数据缓存至redis失败");
}
}
/**
* 数据缓存至redis并设置过期时间
*
* @param key
* @param value
* @return
*/
public <K, V> void add(K key, V value, long timeout, TimeUnit unit) {
try {
if (value != null) {
redisTemplate
.opsForValue()
.set(DEFAULT_KEY_PREFIX + key, JSON.toJSONString(value), timeout, unit);
}
} catch (Exception e) {
log.error(e.getMessage(), e);
throw new RuntimeException("数据缓存至redis失败");
}
}
/**
* 写入 hash-set,已经是key-value的键值，不能再写入为hash-set
*
* @param key must not be {@literal null}.
* @param subKey must not be {@literal null}.
* @param value 写入的值
*/
public <K, SK, V> void addHashCache(K key, SK subKey, V value) {
redisTemplate.opsForHash().put(DEFAULT_KEY_PREFIX + key, subKey, value);
}
/**
* 写入 hash-set,并设置过期时间
*
* @param key must not be {@literal null}.
* @param subKey must not be {@literal null}.
* @param value 写入的值
*/
public <K, SK, V> void addHashCache(K key, SK subKey, V value, long timeout, TimeUnit unit) {
redisTemplate.opsForHash().put(DEFAULT_KEY_PREFIX + key, subKey, value);
redisTemplate.expire(DEFAULT_KEY_PREFIX + key, timeout, unit);
}
/**
* 获取 hash-setvalue
*
* @param key must not be {@literal null}.
* @param subKey must not be {@literal null}.
*/
public <K, SK> Object getHashCache(K key, SK subKey) {
return redisTemplate.opsForHash().get(DEFAULT_KEY_PREFIX + key, subKey);
}
/**
* 从redis中获取缓存数据，转成对象
*
* @param key must not be {@literal null}.
* @param clazz 对象类型
* @return
*/
public <K, V> V getObject(K key, Class<V> clazz) {
String value = this.get(key);
V result = null;
if (!StringUtils.isEmpty(value)) {
result = JSONObject.parseObject(value, clazz);
}
return result;
}
/**
* 从redis中获取缓存数据，转成list
*
* @param key must not be {@literal null}.
* @param clazz 对象类型
* @return
*/
public <K, V> List<V> getList(K key, Class<V> clazz) {
String value = this.get(key);
List<V> result = Collections.emptyList();
if (!StringUtils.isEmpty(value)) {
result = JSONArray.parseArray(value, clazz);
}
return result;
}
/**
* 功能描述：Get the value of {@code key}.
*
* @param key must not be {@literal null}.
* @return java.lang.String
* @date 2021/9/19
**/
public <K> String get(K key) {
String value;
try {
value = redisTemplate.opsForValue().get(DEFAULT_KEY_PREFIX + key);
} catch (Exception e) {
log.error(e.getMessage(), e);
throw new RuntimeException("从redis缓存中获取缓存数据失败");
}
return value;
}
/**
* 删除key
*/
public void delete(String key) {
redisTemplate.delete(key);
}
/**
* 批量删除key
*/
public void delete(Collection<String> keys) {
redisTemplate.delete(keys);
}
/**
* 序列化key
*/
public byte[] dump(String key) {
return redisTemplate.dump(key);
}
/**
* 是否存在key
*/
public Boolean hasKey(String key) {
return redisTemplate.hasKey(key);
}
/**
* 设置过期时间
*/
public Boolean expire(String key, long timeout, TimeUnit unit) {
return redisTemplate.expire(key, timeout, unit);
}
/**
* 设置过期时间
*/
public Boolean expireAt(String key, Date date) {
return redisTemplate.expireAt(key, date);
}
/**
* 移除 key 的过期时间，key 将持久保持
*/
public Boolean persist(String key) {
return redisTemplate.persist(key);
}
/**
* 返回 key 的剩余的过期时间
*/
public Long getExpire(String key, TimeUnit unit) {
return redisTemplate.getExpire(key, unit);
}
/**
* 返回 key 的剩余的过期时间
*/
public Long getExpire(String key) {
return redisTemplate.getExpire(key);
}
}
