如何从 Google App Engine 应用程序发送 Firebase 云消息

Question

如何从 Google 应用程序 Engine/Cloud 端点应用程序发送 Firebase 云消息？

Android Studio 自动生成以下代码来发送 Google 云消息。虽然您可以使用相同的代码发送 FCM，但您不能设置 "notification" 或 "priority" 或新 FCM 使用的任何类似代码。

是否有针对此的 gradle 导入或如何在 App Engine 应用程序中使用 Firebase 云消息传递的示例，以便您可以轻松地执行设置消息、通知、优先级等操作？

这是 Android Studio Cloud Endpoints 当前自动为您生成的内容：

// Gradle dependency:
compile 'com.google.gcm:gcm-server:1.0.0'

/**
     * Api Keys can be obtained from the google cloud console
     */
    private static final String API_KEY = System.getProperty("gcm.api.key");

    /**
     * Send to the first 10 devices (You can modify this to send to any number of devices or a specific device)
     *
     * @param message The message to send
     */
    public void sendMessage(@Named("message") String message) throws IOException {
        if (message == null || message.trim().length() == 0) {
            log.warning("Not sending message because it is empty");
            return;
        }
        // crop longer messages
        if (message.length() > 1000) {
            message = message.substring(0, 1000) + "[...]";
        }
        Sender sender = new Sender(API_KEY);

        Message msg = new Message.Builder().addData("message", message).build();
        List<RegistrationRecord> records = ofy().load().type(RegistrationRecord.class).limit(10).list();
        for (RegistrationRecord record : records) {
            Result result = sender.send(msg, record.getRegId(), 5);
            if (result.getMessageId() != null) {
                log.info("Message sent to " + record.getRegId());
                String canonicalRegId = result.getCanonicalRegistrationId();
                if (canonicalRegId != null) {
                    // if the regId changed, we have to update the datastore
                    log.info("Registration Id changed for " + record.getRegId() + " updating to " + canonicalRegId);
                    record.setRegId(canonicalRegId);
                    ofy().save().entity(record).now();
                }
            } else {
                String error = result.getErrorCodeName();
                if (error.equals(Constants.ERROR_NOT_REGISTERED)) {
                    log.warning("Registration Id " + record.getRegId() + " no longer registered with GCM, removing from datastore");
                    // if the device is no longer registered with Gcm, remove it from the datastore
                    ofy().delete().entity(record).now();
                } else {
                    log.warning("Error when sending message : " + error);
                }
            }
        }
    }

Answer 1

目前没有用于从应用服务器发送消息的 Firebase 客户端。您应该使用记录在案的协议从端点发送带有 JSON 负载的原始 HTTP 请求 here. The server reference 显示了您可以使用的参数，其中包括优先级。

如何从 Google App Engine 应用程序发送 Firebase 云消息

How to send Firebase Cloud Message from Google App Engine App

google-app-engine

android

firebase

google-cloud-endpoints