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WriteEnumUsingOrdinal_cn

高铁 edited this page Mar 17, 2017 · 1 revision

如何序列化Enum时输出ordinal而不是name

在fastjson中,缺省的序列化设置JSON.DEFAULT_GENERATE_FEATURE配置了SerializerFeature.WriteEnumUsingName,所以输出是默认是name,如果不想使用name,有两种办法。

1. 序列化是使用一个serialzerFeatures,而不使用全局的serializerFeature配置。

public static class Model {
    public Type type;
}

public static enum Type {
    Big, Medium, Small
}

public void test_enum_ordinal() throws Exception {
    Model model = new Model();
    model.type = Type.Big;

    int serializerFeatures = JSON.DEFAULT_GENERATE_FEATURE & ~SerializerFeature.WriteEnumUsingName.mask;
    String text = JSON.toJSONString(model, serializerFeatures);
    System.out.println(text);
}

2. 修改全局配置

JSON.DEFAULT_GENERATE_FEATURE &= ~SerializerFeature.WriteEnumUsingName.mask;
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