如何将POJO映射到几个JSON演示文稿 [英] How to map POJO to several JSON presentation

问题描述

如何将POJO映射到多个JSON演示文稿？

How to map POJO to several JSON presentation?

我正在使用杰克逊。

我想要类似下面的代码

@JsonIgnorePropertiesStreamA({ "value2" })
@JsonIgnorePropertiesOtherWay({ "value3" })
public class Value {
  public int value;
  public int value2;
  public int value3;
}

杰克逊如何做到这一点？或者其他哪些库可以做到这一点？

How to do that with Jackson? or What other libraries could do that?

推荐答案

你使用 JSON视图

class Views {
    static class PublicView { }
    static class StreamA extends PublicView { }
    static class OtherWay extends PublicView { }
}

public class Value {
    @JsonView(Views.PublicView.class) public int value;
    @JsonView(Views.OtherWay.class) public int value2;
    @JsonView(Views.StreamA.class) public int value3;
}


String json = new ObjectMapper()
              .writerWithView(Views.OtherWay.class)
              .writeValueAsString(valueInstance);

请注意，这些是包含而非排他性;您创建一个包含所需字段的视图。

Note that these are inclusive rather than exclusive; you create a view that includes the fields you want.

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