杰克逊:JsonInclude如何添加多个JsonInclude注释类型 [英] Jackson: JsonInclude how to add Multiple JsonInclude annotation type

问题描述

如何告诉类仅包含NON_EMPTY和NON_NULL值， 使用

How can I tell a class to include only NON_EMPTY and NON_NULL values only, Using

@JsonInclude(Include.NON_NULL)
@JsonInclude(Include.NON_EMPTY)
public class foo{
    String a;
}

抛出重复注释错误.

推荐答案

空总是被认为是空的"-

"Null is always considered empty" - Jackson's site

因此NON_EMPTY规则涵盖了这两种情况.

So the NON_EMPTY rule covers both cases..

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