Gson tips
Object array to JsonArray
Object[] objects = {123, true, "abc"};
JsonArray jsonArray = new Gson().toJsonTree(objects).getAsJsonArray();
Add additional field when serialization
It could be used when you can not change the original class
class Box {
int length;
int width;
public int getLength() {
return length;
}
public void setLength(int length) {
this.length = length;
}
public int getWidth() {
return width;
}
public void setWidth(int width) {
this.width = width;
}
}
public class JsonArrayTest {
public static void main(String[] args) {
Box box = new Box();
box.setLength(10);
box.setWidth(3);
JsonElement jsonElement = new Gson().toJsonTree(box);
jsonElement.getAsJsonObject().addProperty("area", 30);
System.out.println(new Gson().toJson(jsonElement));
}
}