java 反序列化 JSON 对象时如何忽略特定属性？
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How to ignore a specific property when deserializing a JSON object?
提问by Oliver
I am working against a existing REST interface. One of the incoming JSON objects contains a property called sizewhich I would like to ignore when deserializing this JSON object?
我正在针对现有的 REST 接口工作。传入的 JSON 对象之一包含一个名为的属性size，我想在反序列化此 JSON 对象时忽略该属性？
My standard behavior is to fail on unknown property, so I cannot configure the used object mapper to ignore unknown properties.
我的标准行为是在未知属性上失败，因此我无法将使用的对象映射器配置为忽略未知属性。
回答by nutlike
Add the annotation @JsonIgnoreProperties("size")to your POJO. See the JavaDoc for @JsonIgnorePropertiesat fasterxml.github.iofor more information.
将注释添加@JsonIgnoreProperties("size")到您的 POJO。见的JavaDoc@JsonIgnoreProperties在fasterxml.github.io以获取更多信息。
回答by Radouxca
If the goal is to ignore property ONLY by deserialization, but still serialize it (read-only), it is possible with @JsonIgnoreProperties(value={ "size" }, allowGetters= true).
如果目标是仅通过反序列化忽略属性，但仍对其进行序列化（只读），则可以使用@JsonIgnoreProperties(value={ "size" }, allowGetters= true).
More info here: https://fasterxml.github.io/Hymanson-annotations/javadoc/2.6/com/fasterxml/Hymanson/annotation/JsonIgnoreProperties.html#allowGetters()
更多信息：https: //fasterxml.github.io/Hymanson-annotations/javadoc/2.6/com/fasterxml/Hymanson/annotation/JsonIgnoreProperties.html#allowGetters()
