Redis报错UnrecognizedPropertyException: Unrecognized field

分手后的思念是犯贱 2022-12-04 02:28 112阅读 0赞

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### 本文目录 ###

*  1. 现象
 *  2. 排查
 *  3. 解决

# 1. 现象 #

Spring Boot访问Redis，取出对象时报错，报错信息：

Caused by: com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "headPart" 
    	at com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException.from(UnrecognizedPropertyException.java:61)
    	at com.fasterxml.jackson.databind.DeserializationContext.handleUnknownProperty(DeserializationContext.java:823)
    	at com.fasterxml.jackson.databind.deser.std.StdDeserializer.handleUnknownProperty(StdDeserializer.java:1153)
    	at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.handleUnknownProperty(BeanDeserializerBase.java:1589)
    	at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.handleUnknownVanilla(BeanDeserializerBase.java:1567)
    	at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:294)
    	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:151)
    	at com.fasterxml.jackson.databind.jsontype.impl.AsArrayTypeDeserializer._deserialize(AsArrayTypeDeserializer.java:116)
    	at com.fasterxml.jackson.databind.jsontype.impl.AsArrayTypeDeserializer.deserializeTypedFromAny(AsArrayTypeDeserializer.java:71)
    	at com.fasterxml.jackson.databind.deser.std.UntypedObjectDeserializer$Vanilla.deserializeWithType(UntypedObjectDeserializer.java:712)
    	at com.fasterxml.jackson.databind.deser.impl.TypeWrappedDeserializer.deserialize(TypeWrappedDeserializer.java:68)
    	at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4013)
    	at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3129)
    	at org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer.deserialize(Jackson2JsonRedisSerializer.java:73)
    	... 39 common frames omitted

# 2. 排查 #

最开始以为忘了写`implements Serializable`，检查后不是该问题。

然后以为是不是忘了写get set方法，检查后也不是。

最后发现了细节提示：`Unrecognized field "headPart"`，也就是说识别不了属性headPart，恍然大悟，原来我写了一个方法getHeadPart，但是并没有headPart属性。

# 3. 解决 #

将getHeadPart改为makeHeadPart即可…像jackson这种序列化工具是依赖反射来识别方法属性的，get开头的方法容易误导序列化工具。

[Link 1]: https://studyingpanda.blog.csdn.net/article/details/105329926