Spring Boot Cache配置序列化成JSON字符串

最新推荐文章于 2024-09-23 14:51:33 发布

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最新推荐文章于 2024-09-23 14:51:33 发布

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文章标签： json java

原文链接：https://juejin.im/post/5bdad4a35188256ad64e345d

本文详细介绍了如何在Spring Boot项目中整合Redis作为缓存，并通过自定义序列化配置将缓存数据从默认的二进制格式转换为更易读的JSON格式。文章提供了完整的pom.xml依赖配置、application.yml配置文件以及RedisConfig和UserServiceImpl的代码实现。

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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 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> 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<String, Object> 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<String, Object> 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); } } 反复看文档，一遍又一遍

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转载于:https://juejin.im/post/5bdad4a35188256ad64e345d