518. (Android/Java) [Observable] [GSON] JsonObject , JsonArray 데이터 Model SerializedName 매핑 및 데이터 확인

---

[개발 환경 설정]

​

개발 툴 : AndroidStudio

​

 

---

[소스 코드]

​

// -------------------------------------
// [호출 소스 코드]
// -------------------------------------
        try {
            // [샘플 JSON 데이터 생성 실시]
            String jsonData = "{\"key_age\":29,\"key_item\":[{\"key_lang\":\"Java\",\"key_tool\":\"Android\"},{\"key_lang\":\"Swift\",\"key_tool\":\"Xcode\"}],\"key_name\":\"투케이\",\"key_note\":{\"key_blog\":\"twok.blog\"}}\n";


            // [Observable just 사용해 생성 실시 : 생성자]
            Observable<M_Person> observable = Observable.just(new Gson().fromJson(jsonData, M_Person.class));


            // [Observable 생성자 를 구독 (Subscribe) 해 데이터를 소비 : value 값은 M_Person 모델 클래스]
            observable.subscribe(
                    value -> {
                        Log.i("---","---");
                        Log.d("//===========//","================================================");
                        Log.i("","\n"+"[A_Test >> main() :: onNext()]");
                        Log.i("","\n"+"-----------------------------------------");
                        Log.i("","\n"+"[value :: "+String.valueOf(new Gson().toJson(value))+"]");
                        Log.d("//===========//","================================================");
                        Log.i("---","---");


                        // [세부 데이터 파싱]
                        String name = value.name;
                        String age = String.valueOf(value.age);
                        String note = new Gson().toJson(value.note);
                        String items = new Gson().toJson(value.items);

                        Log.i("---","---");
                        Log.d("//===========//","================================================");
                        Log.i("","\n"+"[A_Test >> main() :: parsing]");
                        Log.i("","\n"+"-----------------------------------------");
                        Log.i("","\n"+"[name :: "+String.valueOf(name)+"]");
                        Log.i("","\n"+"-----------------------------------------");
                        Log.i("","\n"+"[age :: "+String.valueOf(age)+"]");
                        Log.i("","\n"+"-----------------------------------------");
                        Log.i("","\n"+"[note :: "+String.valueOf(note)+"]");
                        Log.i("","\n"+"-----------------------------------------");
                        Log.i("","\n"+"[items :: "+String.valueOf(items)+"]");
                        Log.d("//===========//","================================================");
                        Log.i("---","---");
                    },
                    error -> {
                        Log.i("---","---");
                        Log.e("//===========//","================================================");
                        Log.i("","\n"+"[A_Test >> main() :: onError()]");
                        Log.i("","\n"+"-----------------------------------------");
                        Log.i("","\n"+"[error :: "+String.valueOf(error.getMessage())+"]");
                        Log.e("//===========//","================================================");
                        Log.i("---","---");
                    },
                    () -> {
                        Log.i("---","---");
                        Log.w("//===========//","================================================");
                        Log.i("","\n"+"[A_Test >> main() :: onComplete()]");
                        Log.w("//===========//","================================================");
                        Log.i("---","---");
                    });


        }
        catch (Exception e){
            e.printStackTrace();
        }
​

​

// -------------------------------------
// [M_Person 모델 클래스 소스 코드]
// -------------------------------------

package com.example.javaproject;

import com.google.gson.annotations.SerializedName;

import java.util.ArrayList;

public class M_Person {



    /**
     * // --------------------------------------------------------------------------------------
     * TODO [클래스 설명]
     * // --------------------------------------------------------------------------------------
     * 1. GSON 모델 클래스
     * // --------------------------------------------------------------------------------------
     * 2. @SerializedName : JSON 객체 생성 시 표시될 key name
     * // --------------------------------------------------------------------------------------
     * 3. @Expose : 데이터가 null 일 경우 json 생성 시 제외 설정
     * // --------------------------------------------------------------------------------------
     * 4. build.gradle 설정 :
     *
     * implementation 'com.google.code.gson:gson:2.8.6'
     * // --------------------------------------------------------------------------------------
     * */





    /**
     * // --------------------------------------------------------------------------------------
     * // TODO [빠른 로직 찾기 : 주석 로직 찾기]
     * // --------------------------------------------------------------------------------------
     * // [SEARCH FAST] :
     * // --------------------------------------------------------------------------------------
     * */





    // -----------------------------------------------------------------------------------------
    // TODO [전역 변수 선언]
    // -----------------------------------------------------------------------------------------
    private static final String ACTIVITY_NAME = "M_Person";





    // -----------------------------------------------------------------------------------------
    // TODO [클래스 생성자 초기화]
    // -----------------------------------------------------------------------------------------
    public M_Person(String name, int age, Note note, ArrayList<Item> items){
        this.name = name;
        this.age = age;
        this.note = note;
        this.items = items;
    }





    // -----------------------------------------------------------------------------------------
    // TODO [JSON KEY DATA]
    // -----------------------------------------------------------------------------------------

    // [JSON KEY]
    @SerializedName("key_name") public String name;

    // -------------------------------------------

    // [JSON KEY]
    @SerializedName("key_age") public int age;

    // -------------------------------------------

    // [JSON KEY]
    @SerializedName("key_note") public Note note;

    // -------------------------------------------

    // [JSON KEY]
    @SerializedName("key_item") public ArrayList<Item> items;

    // -------------------------------------------

    // [JSON OBJECT]
    public static class Note {

        public Note(String blog){
            this.blog = blog;
        }

        @SerializedName("key_blog") public String blog;
    }

    // -------------------------------------------

    // [JSON ARRAY]
    public static class Item {

        public Item(String lang, String tool){
            this.lang = lang;
            this.tool = tool;
        }

        @SerializedName("key_lang") public String lang;
        @SerializedName("key_tool") public String tool;
    }

    // -------------------------------------------


} // TODO [클래스 종료]

 

---

[결과 출력]

 

D///===========//: ================================================
I/: [A_Test >> main() :: onNext()]
I/: -----------------------------------------
I/: [value :: {"key_age":29,"key_item":[{"key_lang":"Java","key_tool":"Android"},{"key_lang":"Swift","key_tool":"Xcode"}],"key_name":"투케이","key_note":{"key_blog":"twok.blog"}}]
D///===========//: ================================================
I/---: ---
I/---: ---
D///===========//: ================================================
I/: [A_Test >> main() :: parsing]
I/: -----------------------------------------
I/: [name :: 투케이]
I/: -----------------------------------------
I/: [age :: 29]
I/: -----------------------------------------
I/: [note :: {"key_blog":"twok.blog"}]
I/: -----------------------------------------
I/: [items :: [{"key_lang":"Java","key_tool":"Android"},{"key_lang":"Swift","key_tool":"Xcode"}]]
D///===========//: ================================================

---