杰克逊动态改变JsonIgnore [英] Jackson Change JsonIgnore Dynamically

问题描述

我有一个类，里面也有变量。有时我想忽略一些字段，有时候不反序列化（也许在序列化时）。我怎么能在杰克逊这样做？

I have a class and there are variables inside it as well. Sometimes I want to ignore some fields and sometimes not when deserializing (maybe at serializing too). How can I do it at Jackson?

推荐答案

对于序列化，过滤属性博客条目应该有所帮助。反序列化方面的支持较少，因为想要过滤掉写入的东西更为常见。

For serialization, "filtering properties" blog entry should help. Deserialization side has less support, since it is more common to want to filter out stuff that is written.

一种可能的方法是子类 JacksonAnnotationIntrospector ，覆盖方法（和/或字段）无法使用你想要的任何逻辑的方法。

One possible approach is to sub-class JacksonAnnotationIntrospector, override method(s) that introspect ignorability of methods (and/or fields) to use whatever logic you want.

它也可能如果你给出一个实际应用的例子，那就是帮助，即你试图阻止被反序列化的原因和原因。

It might also help if you gave an example of practical application, i.e what and why you are trying to prevent from being deserialized.

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