當我們使用@Cacheable註解的時候會將返回的物件快取起來，我們會發現預設快取的值是二進位制的，不方便檢視，為此我們自定義序列化配置，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: 自己的密碼 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); } /** * 二者選其一即可 */

// @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); } } 反覆看文件，一遍又一遍

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