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Prevent GSON JSON string serialization

I am new to gson and ask a new question that I could not find an answer to, so please bear with me. StackOverflow and google were not my friend :(

I have a "User" java class, and one of its "externalProfile" properties is a Java string containing already serialized JSON. When gson serializes the User object, it will treat the externalProfile file as primitive and thus avoiding adding JSON slashes, etc. I want gson to leave the string alone, just using it “as is”, because it is already valid and JSON is applicable.

To distinguish the JSON string, I created a simple JSONString class, and I tried using reader / writers, registerTypeAdapter, but nothing works. Can you help me?

public class User {
    private JSONString externalProfile;
    public void setExternalProfile(JSONString externalProfile) { this.externalProfile = externalProfile; }

}

public final class JSONString {
    private String simpleString;
    public JSONString(String simpleString) { this.simpleString = simpleString; }
}

public customJsonBuilder(Object object) {
    GsonBuilder builder = new GsonBuilder();
        builder.registerTypeAdapter(GregorianCalendar.class, new JsonSerializer<GregorianCalendar>() {
            public JsonElement serialize(GregorianCalendar src, Type type, JsonSerializationContext context) {
                if (src == null) {
                    return null;
                }
                return new JsonPrimitive(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(src.getTime()));
            }
        });
        Gson gson = builder.create();
        return gson.toJson(object);
}

, ( String):

{"profile":{"registrationNumber": 11111}}

, JSONString User, JSON:

User user = new User();
user.setExternalProfile(new JSONString(externalProfile)),  
String json = customJsonBuilder(user);

json - :

{\"profile\":{\"registrationNumber\": 11111}}

, JSONString gson String, . , gson JSONString , JSON. /-, .

+4
2

Alexis C:

JsonObject:

new Gson().fromJson(externalProfile, JsonObject.class));

gson User. JSON!

+3

. :

public class RawJsonGsonAdapter extends TypeAdapter<String> {

    @Override
    public void write(final JsonWriter out, final String value) throws IOException {
        out.jsonValue(value);
    }

    @Override
    public String read(final JsonReader in) throws IOException {
        return null; // Not supported
    }
}

, , . :

public class MyPojo {
    @JsonAdapter(RawJsonGsonAdapter.class)
    public String someJsonInAString;

    public String normalString;
}

. Gson .

+2

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