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LINE Notify for Java 自分用メモ

Posted at

Line Notify

【事前準備】
Line Notify公式サイトでTOKENを取得
②Line Notifyをグループに招待

import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URLEncoder;
import java.net.URL;
import java.util.Scanner;

public class LineNotify {

    // LINE Notify トークン
    private static final String TOKEN = "YOUR_TOKEN";
    // LINE Notify APIエンドポイント
    private static final String URL = "https://notify-api.line.me/api/notify";

    private static String urlencode(String message) throws Exception {
        return URLEncoder.encode(message, "UTF-8");
    }

    public static void main(String[] args) {

        String message = "テスト";

        try {
            String encodedMessage = urlencode(message);
            sendPostRequest(encodedMessage);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private static void sendPostRequest(String message) throws Exception {
        URL url = new URL(URL);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setRequestMethod("POST");
        conn.setRequestProperty("Authorization", "Bearer " + TOKEN);
        conn.setDoOutput(true);

        // "message="は必須
        String postData = "message=" + message;

        try (OutputStream os = conn.getOutputStream()) {
            os.write(postData.getBytes("UTF-8"));
        } 

        int responseCode = conn.getResponseCode();
        if (responseCode == HttpURLConnection.HTTP_OK) {
            System.out.println("メッセージが送信されました。");
        } else {
            System.out.println("メッセージの送信に失敗しました。HTTP応答コード: " + responseCode);
        }

        conn.disconnect();
    }
}

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