EnumFieldsTest7.java 文件源码

public void test_enum() throws Exception {
    Model model = new Model();
    model.t1 = Type.A;
    model.t2 = null;

    ValueFilter filter = new ValueFilter() {
        public Object process(Object object, String name, Object value) {
            return null;
        }
    };
    String text = JSON.toJSONString(model, filter, SerializerFeature.WriteMapNullValue);
    Assert.assertEquals("{\"t1\":null,\"t2\":null}", text);
}