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问题出现
最近遇到一个问题,Hutool从4.1.7升级到4.6.8之后,使用feign调用出现错误:
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Caused by: feign.codec.EncodeException: Type definition error: [simple type, class cn.hutool.json.JSONNull]; nested exception is com.fasterxml.jackson.databind.exc.InvalidDefinitionException: No serializer found for class cn.hutool.json.JSONNull and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS) (through reference chain: cn.hutool.json.JSONObject["securityGroupIds"])
at feign.ReflectiveFeign$BuildEncodedTemplateFromArgs.resolve(ReflectiveFeign.java:349)
at feign.Re
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