1.问题现象:
最近使用spring-data-redis 和jedis 操作redis时发现存储在redis中的key不是程序中设置的string值,前面还多出了许多类似\xac\xed\x00\x05t\x00这种字符串
2.原因:
spring-data-redis的RedisTemplate<K, V>模板类在操作redis时默认使用JdkSerializationRedisSerializer来进行序列化。
public void afterPropertiesSet() { super.afterPropertiesSet(); boolean defaultUsed = false; if (defaultSerializer == null) { defaultSerializer = new JdkSerializationRedisSerializer( classLoader != null ? classLoader : this.getClass().getClassLoader()); } if (enableDefaultSerializer) { if (keySerializer == null) { keySerializer = defaultSerializer; defaultUsed = true; } if (valueSerializer == null) { valueSerializer = defaultSerializer; defaultUsed = true; } if (hashKeySerializer == null) { hashKeySerializer = defaultSerializer; defaultUsed = true; } if (hashValueSerializer == null) { hashValueSerializer = defaultSerializer; defaultUsed = true; } } if (enableDefaultSerializer && defaultUsed) { Assert.notNull(defaultSerializer, "default serializer null and not all serializers initialized"); } if (scriptExecutor == null) { this.scriptExecutor = new DefaultScriptExecutor<K>(this); } initialized = true; }
3.解决方案
public class RedisDao { private static final Logger log = LoggerFactory.getLogger(RedisDao.class); private RedisTemplate redisTemplate; private RedisTemplate<String, Object> redisTemplateMap; @Autowired(required = false) public void setRedisTemplate(RedisTemplate redisTemplate) { RedisSerializer stringSerializer = new StringRedisSerializer(); redisTemplate.setKeySerializer(stringSerializer); redisTemplate.setValueSerializer(stringSerializer); redisTemplate.setHashKeySerializer(stringSerializer); redisTemplate.setHashValueSerializer(stringSerializer); this.redisTemplate = redisTemplate; }
将redisTemplate默认改为stringRedis序列化方式。