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When we define a class with following format
public class Field {
@SerializedName("name")
public String name;
@SerializedName("category")
public String category;
}
for the JsonObject content
{
"name" : "string",
"category" : "string",
}
and using Gson to parse the content
Field field = new GsonBuilder().create().fromJson(
content, Field.class);
So,my question is can we use Gson to get the @Serialized name. For in this instance I want to know what @Serialized name is used for field.name,which is name and for field.category which is category.
As per suggested by @Sotirios Delimanolis, using Reflection we can get the Serialized name
java.lang.reflect.Field fields = Field.class.getDeclaredField("name");
SerializedName sName =fields.getAnnotation(SerializedName.class);
System.out.println(sName.value());
993
This class has two fields that represent the person name and birth date of a person. These fields are annotated with the @SerializedName annotation. The parameter (value) of this annotation is the name to be used when serialising and deserialising objects.
Serialization in the context of Gson means converting a Java object to its JSON representation. In order to do the serialization, we need to create the Gson object, which handles the conversion. Next, we need to call the function toJson() and pass the User object. Program output.
The @SerializedName annotation can be used to serialize a field with a different name instead of an actual field name. We can provide the expected serialized name as an annotation attribute, Gson can make sure to read or write a field with the provided name.
Use reflection to retrieve the Field object you want. You can then use Field#getAnnotation(Class) to get a SerializedName instance on which you can call value() to get the name.
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