Cannot deserialize instance of `java.util.ArrayList＜com.entity.Test＞` out of VALUE_STRING token

最新推荐文章于 2024-04-13 17:25:56 发布

原创最新推荐文章于 2024-04-13 17:25:56 发布

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本文介绍了一个关于JSON数据解析成实体对象时出现的类型不匹配错误，主要原因是JSON字符串中的某个值无法转换为预期的集合类型。

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是因为返回的JSON数据解析成Test实体的时候报错了, 我这里报错是因为:

JSON里面的某些字段超出了Test里面属性定义的字段类型

完整报错如下 :

Caused by: com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance of `java.util.ArrayList<com.kakaclo.products.entity.ProductStockVo>` out of VALUE_STRING token
at [Source: (PushbackInputStream); line: 1, column: 45] (through reference chain: com.kakaclo.common.vo.ResultVO["data"])
at com.fasterxml.jackson.databind.exc.MismatchedInputException.from(MismatchedInputException.java:59) ~[jackson-databind-2.11.1.jar!/:2.11.1]
at com.fasterxml.jackson.databind.DeserializationContext.reportInputMismatch(DeserializationContext.java:1468) ~[jackson-databind-2.11.1.jar!/:2.11.1]
at com.fasterxml.jackson.databind.DeserializationContext.handleUnexpectedToken(DeserializationContext.java:1242) ~[jackson-databind-2.11.1.jar!/:2.11.1]
at com.fasterxml.jackson.databind.DeserializationContext.handleUnexpectedToken(DeserializationContext.java:1190) ~[jackson-databind-2.11.1.jar!/:2.11.1]
at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.handleNonArray(CollectionDeserializer.java:337) ~[jackson-databind-2.11.1.jar!/:2.11.1]
at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:270) ~[jackson-databind-2.11.1.jar!/:2.11.1]
at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:250) ~[jackson-databind-2.11.1.jar!/:2.11.1]
at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:27) ~[jackson-databind-2.11.1.jar!/:2.11.1]
at com.fasterxml.jackson.databind.deser.impl.FieldProperty.deserializeAndSet(FieldProperty.java:138) ~[jackson-databind-2.11.1.jar!/:2.11.1]
at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:371) ~[jackson-databind-2.11.1.jar!/:2.11.1]
at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:164) ~[jackson-databind-2.11.1.jar!/:2.11.1]
at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4482) ~[jackson-databind-2.11.1.jar!/:2.11.1]
at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3487) ~[jackson-databind-2.11.1.jar!/:2.11.1]
at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.readJavaType(AbstractJackson2HttpMessageConverter.java:273) ~[spring-web-5.2.8.RELEASE.jar!/:5.2.8.RELEASE]
at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.read(AbstractJackson2HttpMessageConverter.java:250) ~[spring-web-5.2.8.RELEASE.jar!/:5.2.8.RELEASE]
at org.springframework.web.client.HttpMessageConverterExtractor.extractData(HttpMessageConverterExtractor.java:105) ~[spring-web-5.2.8.RELEASE.jar!/:5.2.8.RELEASE]
at org.springframework.cloud.openfeign.support.SpringDecoder.decode(SpringDecoder.java:59) ~[spring-cloud-openfeign-core-2.2.6.RELEASE.jar!/:2.2.6.RELEASE]
at org.springframework.cloud.openfeign.support.ResponseEntityDecoder.decode(ResponseEntityDecoder.java:62) ~[spring-cloud-openfeign-core-2.2.6.RELEASE.jar!/:2.2.6.RELEASE]
at feign.optionals.OptionalDecoder.decode(OptionalDecoder.java:36) ~[feign-core-10.10.1.jar!/:?]
at feign.AsyncResponseHandler.decode(AsyncResponseHandler.java:115) ~[feign-core-10.10.1.jar!/:?]
... 54 more