Java的杰克逊组织。codehaus.jackson.map.exc.UnrecognizedPropertyException [英] Java Jackson org.codehaus.jackson.map.exc.UnrecognizedPropertyException

问题描述

我绑定一个JSON响应使用杰克逊我的课。当有比我的类定义我的JSON响应更多的领域，除了一切的伟大工程。我想杰克逊忽略不我JSON响应存在的字段。这是由于兼容为将来的版本。如果我添加一个新的领域，我不希望我的客户previous版本崩溃。

想法？

  ObjectMapper映射器=新ObjectMapper（）; //可以重用，全球共享
        PromoResponse promoResponse = mapper.readValue（R，PromoResponse.class）;
 

解决方案

您可以把 @JsonIgnoreProperties（ignoreUnknown = TRUE）注释您PromoResponse类。

I am binding a JSON response to my class using Jackson. Everything works great except when there are more fields in my JSON response than my class defines. I want Jackson to ignore the fields that do not exist in my JSON response. This is due to compatability for future versions. If I add a new field I do not want previous versions of my client to crash.

Ideas?

ObjectMapper mapper = new ObjectMapper(); // can reuse, share globally
        PromoResponse promoResponse = mapper.readValue(r, PromoResponse.class);

解决方案

You can put the @JsonIgnoreProperties(ignoreUnknown=true) annotation on your PromoResponse class.

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