{"id":30576,"date":"2024-10-28T04:01:00","date_gmt":"2024-10-28T04:01:00","guid":{"rendered":"http:\/\/atmokpo.com\/w\/?p=30576"},"modified":"2024-11-26T06:48:08","modified_gmt":"2024-11-26T06:48:08","slug":"%ec%9e%90%eb%b0%94-%ec%95%88%eb%93%9c%eb%a1%9c%ec%9d%b4%eb%93%9c-%ec%95%b1%ea%b0%9c%eb%b0%9c-%ea%b0%95%ec%a2%8c-http-%ed%86%b5%ec%8b%a0%ed%95%98%ea%b8%b0","status":"publish","type":"post","link":"https:\/\/atmokpo.com\/w\/30576\/","title":{"rendered":"\uc790\ubc14 \uc548\ub4dc\ub85c\uc774\ub4dc \uc571\uac1c\ubc1c \uac15\uc88c, HTTP \ud1b5\uc2e0\ud558\uae30"},"content":{"rendered":"

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1. \uc11c\ub860<\/h2>\n

\uc548\ub4dc\ub85c\uc774\ub4dc \uc571 \uac1c\ubc1c\uc5d0\uc11c HTTP \ud1b5\uc2e0\uc740 \uc11c\ubc84\uc640\uc758 \ub370\uc774\ud130 \uc804\uc1a1 \ubc0f \uc218\uc2e0\uc744 \uc704\ud55c \ud544\uc218\uc801\uc778 \uc694\uc18c\uc785\ub2c8\ub2e4.
\n \ubcf8 \uac15\uc88c\uc5d0\uc11c\ub294 \uc790\ubc14\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc548\ub4dc\ub85c\uc774\ub4dc \uc571\uc5d0\uc11c HTTP \ud1b5\uc2e0\uc744 \uad6c\ud604\ud558\ub294 \ubc29\ubc95\uc5d0 \ub300\ud574 \uc790\uc138\ud788 \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.
\n RESTful API\uc640 JSON \ub370\uc774\ud130\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc774\ub7ec\ud55c \ud1b5\uc2e0\uc744 \uc218\ud589\ud558\ub294 \ubc29\ubc95\uc744 \uc911\uc810\uc801\uc73c\ub85c \ub2e4\ub8f0 \uac83\uc785\ub2c8\ub2e4.<\/p>\n<\/section>\n

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2. HTTP \ud1b5\uc2e0\uc758 \uc774\ud574<\/h2>\n

HTTP(\ud558\uc774\ud37c\ud14d\uc2a4\ud2b8 \uc804\uc1a1 \ud504\ub85c\ud1a0\ucf5c)\ub294 \ud074\ub77c\uc774\uc5b8\ud2b8\uc640 \uc11c\ubc84 \uac04\uc758 \ub370\uc774\ud130 \uc804\uc1a1\uc744 \uc704\ud55c \ud504\ub85c\ud1a0\ucf5c\uc785\ub2c8\ub2e4.
\n \ud074\ub77c\uc774\uc5b8\ud2b8\ub294 \uc694\uccad(request)\uc744 \ubcf4\ub0b4\uace0, \uc11c\ubc84\ub294 \uc751\ub2f5(response)\uc744 \ubc18\ud658\ud569\ub2c8\ub2e4.
\n \uc77c\ubc18\uc801\uc778 \uc694\uccad \ubc29\ubc95\uc5d0 \ud3ec\ud568\ub418\ub294 GET, POST, PUT, DELETE\uc640 \uac19\uc740 HTTP \uba54\uc18c\ub4dc\ub97c \uc774\ud574\ud558\ub294 \uac83\uc774 \uc911\uc694\ud569\ub2c8\ub2e4.<\/p>\n<\/section>\n

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3. \uc548\ub4dc\ub85c\uc774\ub4dc\uc5d0\uc11c HTTP \ud1b5\uc2e0 \uad6c\ud604\ud558\uae30<\/h2>\n

\uc548\ub4dc\ub85c\uc774\ub4dc\uc5d0\uc11c HTTP \ud1b5\uc2e0\uc744 \uad6c\ud604\ud558\uae30 \uc704\ud574 \uba87 \uac00\uc9c0 \ub77c\uc774\ube0c\ub7ec\ub9ac\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.
\n \uadf8 \uc911\uc5d0\uc11c\ub3c4 \ub300\ud45c\uc801\uc778 \ub77c\uc774\ube0c\ub7ec\ub9ac\ub85c\ub294 HttpURLConnection<\/code>\uacfc OkHttp<\/code>\uac00 \uc788\uc2b5\ub2c8\ub2e4.
\n \ub2e4\uc74c\uc740 \uac01\uac01\uc758 \ub77c\uc774\ube0c\ub7ec\ub9ac\ub97c \uc0ac\uc6a9\ud55c \uac04\ub2e8\ud55c \uc608\uc81c\uc785\ub2c8\ub2e4.<\/p>\n<\/section>\n

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3.1. HttpURLConnection \uc0ac\uc6a9\ud558\uae30<\/h3>\n

\uc548\ub4dc\ub85c\uc774\ub4dc\uc758 \uae30\ubcf8 API\uc778 HttpURLConnection<\/code>\uc744 \uc0ac\uc6a9\ud558\uc5ec HTTP \uc694\uccad\uc744 \ubcf4\ub0b4\ub294 \ubc29\ubc95\uc744 \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n

\uc608\uc81c \ucf54\ub4dc:<\/h4>\n
\n                \npublic class MainActivity extends AppCompatActivity {\n    private static final String API_URL = \"https:\/\/jsonplaceholder.typicode.com\/posts\";\n\n    @Override\n    protected void onCreate(Bundle savedInstanceState) {\n        super.onCreate(savedInstanceState);\n        setContentView(R.layout.activity_main);\n        new FetchDataTask().execute();\n    }\n\n    private class FetchDataTask extends AsyncTask {\n        @Override\n        protected String doInBackground(Void... voids) {\n            StringBuilder result = new StringBuilder();\n            try {\n                URL url = new URL(API_URL);\n                HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();\n                urlConnection.setRequestMethod(\"GET\");\n                urlConnection.setConnectTimeout(5000);\n                urlConnection.setReadTimeout(5000);\n                \n                InputStream inputStream = urlConnection.getInputStream();\n                BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));\n                String line;\n                while ((line = reader.readLine()) != null) {\n                    result.append(line);\n                }\n                reader.close();\n                urlConnection.disconnect();\n            } catch (Exception e) {\n                e.printStackTrace();\n            }\n            return result.toString();\n        }\n\n        @Override\n        protected void onPostExecute(String result) {\n            \/\/ \uacb0\uacfc \ucc98\ub9ac (\uc608: UI \uc5c5\ub370\uc774\ud2b8)\n            Log.d(\"HTTP Response\", result);\n        }\n    }\n}\n                <\/void,><\/code>\n            <\/pre>\n
\uc704\uc758 \ucf54\ub4dc\uc5d0\uc11c\ub294 AsyncTask<\/code>\ub97c \uc0ac\uc6a9\ud558\uc5ec \ube44\ub3d9\uae30\uc801\uc73c\ub85c HTTP GET \uc694\uccad\uc744 \uc218\ud589\ud569\ub2c8\ub2e4.
\n            \uc694\uccad \uacb0\uacfc\ub294 onPostExecute<\/code> \uba54\uc11c\ub4dc\uc5d0\uc11c \ucc98\ub9ac\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/section>\n
\n
3.2. OkHttp \ub77c\uc774\ube0c\ub7ec\ub9ac \uc0ac\uc6a9\ud558\uae30<\/h3>\n
OkHttp\ub294 \ud6a8\uc728\uc801\uc774\uace0 \uac15\ub825\ud55c HTTP \ud074\ub77c\uc774\uc5b8\ud2b8 \ub77c\uc774\ube0c\ub7ec\ub9ac\uc785\ub2c8\ub2e4.
\n            \uc0ac\uc6a9\ubc95\uc774 \uac04\ub2e8\ud558\uace0 \ub2e4\uc591\ud55c \uae30\ub2a5\uc744 \uc81c\uacf5\ud558\uc5ec \ub9ce\uc740 \uac1c\ubc1c\uc790\ub4e4\uc774 \uc120\ud638\ud569\ub2c8\ub2e4.<\/p>\n
Gradle\uc5d0 OkHttp \ucd94\uac00\ud558\uae30:<\/h4>\n
\n                \nimplementation 'com.squareup.okhttp3:okhttp:4.9.1'\n                <\/code>\n            <\/pre>\n
\uc608\uc81c \ucf54\ub4dc:<\/h4>\n
\n                \npublic class MainActivity extends AppCompatActivity {\n    private static final String API_URL = \"https:\/\/jsonplaceholder.typicode.com\/posts\";\n\n    @Override\n    protected void onCreate(Bundle savedInstanceState) {\n        super.onCreate(savedInstanceState);\n        setContentView(R.layout.activity_main);\n        \n        OkHttpClient client = new OkHttpClient();\n        Request request = new Request.Builder()\n                .url(API_URL)\n                .build();\n\n        client.newCall(request).enqueue(new Callback() {\n            @Override\n            public void onFailure(Call call, IOException e) {\n                e.printStackTrace();\n            }\n\n            @Override\n            public void onResponse(Call call, Response response) throws IOException {\n                if (response.isSuccessful()) {\n                    String responseData = response.body().string();\n                    Log.d(\"HTTP Response\", responseData);\n                }\n            }\n        });\n    }\n}\n                <\/code>\n            <\/pre>\n
\uc704 \ucf54\ub4dc\ub294 OkHttp \ud074\ub77c\uc774\uc5b8\ud2b8\ub97c \uc0ac\uc6a9\ud558\uc5ec \ube44\ub3d9\uae30\uc801\uc73c\ub85c GET \uc694\uccad\uc744 \ubcf4\ub0b4\uace0 \uc751\ub2f5\uc744 \ubc1b\ub294 \uacfc\uc815\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4.
\n            enqueue()<\/code> \uba54\uc11c\ub4dc\ub97c \uc0ac\uc6a9\ud558\uc5ec \ube44\ub3d9\uae30 \uc694\uccad\uc744 \uc218\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/section>\n
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4. JSON \ub370\uc774\ud130 \ucc98\ub9ac\ud558\uae30<\/h2>\n
HTTP \uc694\uccad\uc758 \uc751\ub2f5\uc73c\ub85c JSON \ub370\uc774\ud130\ub97c \uc218\uc2e0\ud558\ub294 \uac83\uc774 \uc77c\ubc18\uc801\uc785\ub2c8\ub2e4.
\n            \uc790\ubc14\uc5d0\uc11c\ub294 org.json<\/code> \ud328\ud0a4\uc9c0\ub098 Gson<\/code> \ub77c\uc774\ube0c\ub7ec\ub9ac\ub97c \uc0ac\uc6a9\ud558\uc5ec JSON \ub370\uc774\ud130\ub97c \uc27d\uac8c \ucc98\ub9ac\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
\uc608\uc81c \ucf54\ub4dc (org.json \uc0ac\uc6a9\ud558\uae30):<\/h4>\n
\n                \n@Override\nprotected void onPostExecute(String result) {\n    try {\n        JSONArray jsonArray = new JSONArray(result);\n        for (int i = 0; i < jsonArray.length(); i++) {\n            JSONObject jsonObject = jsonArray.getJSONObject(i);\n            String title = jsonObject.getString(\"title\");\n            Log.d(\"JSON Title\", title);\n        }\n    } catch (JSONException e) {\n        e.printStackTrace();\n    }\n}\n                <\/code>\n            <\/pre>\n
\uc704 \ucf54\ub4dc\ub294 JSON \ubc30\uc5f4\uc744 \ud30c\uc2f1\ud558\uc5ec \uac01 \uc694\uc18c\uc758 \uc81c\ubaa9\uc744 \ub85c\uadf8\uc5d0 \ucd9c\ub825\ud558\ub294 \uc608\uc81c\uc785\ub2c8\ub2e4.<\/p>\n
\uc608\uc81c \ucf54\ub4dc (Gson \uc0ac\uc6a9\ud558\uae30):<\/h4>\n
\n                \nimplementation 'com.google.code.gson:gson:2.8.8'\n\n@Override\nprotected void onPostExecute(String result) {\n    Gson gson = new Gson();\n    Post[] posts = gson.fromJson(result, Post[].class);\n    for (Post post : posts) {\n        Log.d(\"Gson Title\", post.getTitle());\n    }\n}\n\npublic class Post {\n    private int userId;\n    private int id;\n    private String title;\n    private String body;\n\n    public String getTitle() {\n        return title;\n    }\n}\n                <\/code>\n            <\/pre>\n
\uc704 \ucf54\ub4dc\ub294 Gson\uc744 \uc0ac\uc6a9\ud558\uc5ec JSON \uc751\ub2f5\uc744 Java \uac1d\uccb4 \ubc30\uc5f4\ub85c \ubcc0\ud658\ud558\uc5ec \uc81c\ubaa9\uc744 \ucd9c\ub825\ud558\ub294 \uc608\uc81c\uc785\ub2c8\ub2e4.
\n            Gson\uc740 JSON \ub370\uc774\ud130\uc640 \uac1d\uccb4 \uac04\uc758 \ubcc0\ud658\uc744 \uac04\ud3b8\ud558\uac8c \ub3c4\uc640\uc90d\ub2c8\ub2e4.<\/p>\n<\/section>\n
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5. \uc5d0\ub7ec \ucc98\ub9ac \ubc0f \ucd5c\uc801\ud654<\/h2>\n
HTTP \ud1b5\uc2e0 \uc2dc \uc5d0\ub7ec\uac00 \ubc1c\uc0dd\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub530\ub77c\uc11c \uc801\uc808\ud55c \uc5d0\ub7ec \ucc98\ub9ac\uac00 \ud544\uc694\ud569\ub2c8\ub2e4.
\n            \uc0ac\uc6a9\uc790\uc5d0\uac8c \uc624\ub958 \uba54\uc2dc\uc9c0\ub97c \uc81c\uacf5\ud558\uace0, \ub2e4\uc74c\uacfc \uac19\uc740 \uc608\uc678 \uc0c1\ud669\uc744 \ud578\ub4e4\ub9c1\ud574\uc57c \ud569\ub2c8\ub2e4:<\/p>\n