Spring Boot Cache配置 序列化成JSON字符串

当我们使用@Cacheable注解的时候会将返回的对象缓存起来，我们会发现默认缓存的值是二进制的，不方便查看，为此我们自定义序列化配置，改成JSON格式的

配置如下：

pom.xml

4.0.0
com.cjs.example
cjs-springsecurity-example
0.0.1-SNAPSHOT
jar
cjs-springsecurity-example


org.springframework.boot
spring-boot-starter-parent
2.0.2.RELEASE



UTF-8
UTF-8
1.8



org.springframework.boot
spring-boot-starter-cache


org.springframework.boot
spring-boot-starter-data-redis


org.springframework.boot
spring-boot-starter-security


org.springframework.boot
spring-boot-starter-thymeleaf


org.springframework.boot
spring-boot-starter-web


org.projectlombok
lombok
true


org.springframework.boot
spring-boot-starter-test
test


org.springframework.security
spring-security-test
test





org.springframework.boot
spring-boot-maven-plugin




application.yml

spring:
cache:
type: redis
redis:
cache-null-values: false
time-to-live: 3600000ms
redis:
host: 10.123.52.189
port: 6379
database: 5
password: 自己的密码
logging:
level:
root: info
RedisConfig.java

package com.cjs.example.config;
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.beans.factory.annotation.Autowired;
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.cache.RedisCacheWriter;
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.StringRedisSerializer;
@EnableCaching
@Configuration
public class RedisConfig extends CachingConfigurerSupport {
@Autowired
private RedisConnectionFactory redisConnectionFactory;
@Bean
public RedisTemplate redisTemplate(RedisConnectionFactory redisConnectionFactory) {
Jackson2JsonRedisSerializer serializer = new Jackson2JsonRedisSerializer(Object.class);
ObjectMapper objectMapper = new ObjectMapper();
objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
objectMapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
serializer.setObjectMapper(objectMapper);
RedisTemplate redisTemplate = new RedisTemplate<>();
redisTemplate.setConnectionFactory(redisConnectionFactory);
redisTemplate.setKeySerializer(new StringRedisSerializer());
redisTemplate.setValueSerializer(serializer);
redisTemplate.setHashKeySerializer(new StringRedisSerializer());
redisTemplate.setHashValueSerializer(serializer);
redisTemplate.afterPropertiesSet();
return redisTemplate;
}
@Bean
public RedisCacheManager redisCacheManager(RedisTemplate redisTemplate) {
RedisCacheWriter redisCacheWriter = RedisCacheWriter.nonLockingRedisCacheWriter(redisTemplate.getConnectionFactory());
RedisCacheConfiguration redisCacheConfiguration = RedisCacheConfiguration.defaultCacheConfig()
.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(redisTemplate.getValueSerializer()));
return new RedisCacheManager(redisCacheWriter, redisCacheConfiguration);
}
/**
* 二者选其一即可
*/

// @Bean
// public RedisCacheConfiguration redisCacheConfiguration() {
// Jackson2JsonRedisSerializer serializer = new Jackson2JsonRedisSerializer(Object.class);
// ObjectMapper objectMapper = new ObjectMapper();
// objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
// objectMapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
// serializer.setObjectMapper(objectMapper);
// return RedisCacheConfiguration.defaultCacheConfig().serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(serializer));
// }
}
UserServiceImpl.java

package com.cjs.example.service.impl;
import com.cjs.example.dao.UserDao;
import com.cjs.example.entity.SysUser;
import com.cjs.example.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;
@Service
public class UserServiceImpl implements UserService {
@Autowired
private UserDao userDao;
@Cacheable(cacheNames = “authority”, key = “#username”)
@Override
public SysUser getUserByName(String username) {
return userDao.selectByName(username);
}
}
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