java - 给WEB用户发送FCM通知时如何设置ttl(time to live)？

Question

我正在尝试通过 Firebase 云消息传递向多个用户(WEB、WAP)发送通知。但是我无法设置通知的生存时间。

Map<String, String> map = new HashMap<>();
    map.put("status", article.getStatus());
    map.put("headLine", article.getHeadLine());
    map.put("caption", article.getCaption());
    map.put("thumb", article.getThumb());
    map.put("tag", article.getTag());
    map.put("webUrl", article.getWebUrl());
    map.put("category", article.getCategory());

    WebpushConfig webpushConfig = WebpushConfig.builder().putAllData(map).putHeader("TTL", ttl + "").build();
    Message message = Message.builder()
            .setWebpushConfig(webpushConfig)
            .putAllData(map)
            .setTopic(id)
            .build();
    String response = FirebaseMessaging.getInstance().send(message);

Answer 1

我可以通过添加以下行来配置相同的内容:-

Map<String, String> headers = new HashMap<>();
headers.put("TTL", "3600");
headers.put("Urgency", "high");
WebpushConfig webpushConfig = WebpushConfig.builder().putAllHeaders(headers).build();