I have this schema :
public class Student {
public String name;
public School school;
}
public class School {
public int id;
public String name;
}
public class Data {
public ArrayList<Student> students;
public ArrayList<School> schools;
}
I would like to serialize the Data object with Gson, and get something like :
{ "students": [{
"name":"name1",
"school": "1" //the id of the scool, not its entire Json
}],
"school": [{ //the entire JSON
"id" : "1",
"name": "schoolName"
}]
}
To make that, I must use custom serializer for the student part, so that Gson only print the id of the School. But for the School, I have to have nomal serializer.
How can I do everything with only one Gson object ?
You can write a custom serializer something like this:
public class StudentAdapter implements JsonSerializer<Student> {
@Override
public JsonElement serialize(Student src, Type typeOfSrc,
JsonSerializationContext context) {
JsonObject obj = new JsonObject();
obj.addProperty("name", src.name);
obj.addProperty("school", src.school.id);
return obj;
}
}
Of course wherever you are going to serialize this object you need to add it to the Gson like this:
Gson gson = new GsonBuilder()
.registerTypeAdapter(Student.class, new StudentAdapter())
.create();
return gson.toJson([YOUR_OBJECT_TO_BE_SERIALIZED]);
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.