参考:SpringBoot 缓存之 @Cacheable介绍-CSDN博客
package com.ruoyi.project.tool.cache;
import com.ruoyi.project.system.domain.SysUser;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RequestMapping("/redisTest")
@Slf4j
public class CacheTestController {
// http://localhost:9876/redisTest/cache?userId=6&userName=zhangsan
@GetMapping("/cache")
@Cacheable(cacheNames = "User", keyGenerator = "cacheKeyGenerator")
public Object cache(SysUser sysUser){
log.info("sysUser: {}", sysUser);
return sysUser;
}
}
CacheConfig
package com.ruoyi.framework.config.cache;
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.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.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import java.time.Duration;
import java.util.HashMap;
import java.util.Map;
@Configuration
@EnableCaching
public class CacheConfig {
/**
* CacheManager为一个接口,RedisCacheManager为该接口的实现
* redisConnectionFactory 连接工厂
* cacheDefaults 默认配置
*
* @param redisConnectionFactory
* @return
*/
@Bean
public CacheManager cacheManager(RedisConnectionFactory redisConnectionFactory) {
RedisCacheManager redisCacheManager = RedisCacheManager.builder(redisConnectionFactory)
.cacheDefaults(defaultCacheConfig(10000))
.withInitialCacheConfigurations(initCacheConfigMap())
.transactionAware()
.build();
return redisCacheManager;
}
/**
* 默认配置中进行了序列化的配置
*
* @param second
* @return
*/
private RedisCacheConfiguration defaultCacheConfig(Integer second) {
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
RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
.entryTtl(Duration.ofSeconds(second))
.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()))
.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer))
.disableCachingNullValues();
return config;
}
/**
* 针对不同的redis的key 有不同的过期时间
*
* @return
*/
private Map<String, RedisCacheConfiguration> initCacheConfigMap() {
Map<String, RedisCacheConfiguration> configMap = new HashMap<>();
configMap.put("User", this.defaultCacheConfig(10 * 60));
configMap.put("User1", this.defaultCacheConfig(1000));
return configMap;
}
}
CacheKeyGenerator
package com.ruoyi.framework.config.cache;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cache.interceptor.KeyGenerator;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;
import java.lang.reflect.Method;
@Slf4j
@Component
public class CacheKeyGenerator implements KeyGenerator {
@Override
public Object generate(Object target, Method method, Object... params) {
// log.info("===CacheKeyGenerator generate 19 --->target: {}, method: {}, params: {}", target, method, params);
StringBuilder sb = new StringBuilder();
sb.append(target.getClass().getName())
.append(".")
.append(method.getName())
.append(":")
.append(StringUtils.arrayToDelimitedString(params, "_"));// !注意,记得重写参数的toString哦
log.info("===CacheKeyGenerator generate 27 --->sb: {}", sb);
return sb.toString();
}
}