只想包含 Genson 映射到 JSON 的对象的某些字段

Question

我的 Pojo class 包含 50 个字段，我只需要将 10 个字段转换为 json。

Genson genson = new Genson.Builder().include("address4", User.class).create();
String json = genson.serialize(user);

"include()" 方法似乎不起作用。请帮忙。

Answer 1

一个选项是默认禁用所有属性并有选择地包含您想要的属性，如下所示：

new GensonBuilder()
  .useFields(false)
  .useMethods(false)
  .include("address4", User.class)
  .create();

请注意，我认为您还可以在要包含的字段上使用 @JsonProperty 注释，而不是通过 GensonBuilder 包含它们。

如果您觉得自己在为该库做出贡献，您还可以改进 PropertyFilter class to support regular expressions for the field name or by adding another method that would be excludeAll(Class clazz)/includeAll(Class clazz), that would exclude all properties from this class. I opened this issue 以跟踪此功能。

Answer 2

Genson genson = new Genson.Builder()
                 .exclude(Object.class)//this excludes all object types
                 .include("address4", User.class).create();//then add only required fields
String json = genson.serialize(user);

只想包含 Genson 映射到 JSON 的对象的某些字段

Want to include only some fields of an object that are being mapped to JSON by Genson

json

genson