Firebase Admin SDK 可讓您從伺服器端執行基本主題管理工作。您可以使用伺服器邏輯,根據註冊權杖大量訂閱及取消訂閱用戶端應用程式執行個體。
您可以讓用戶端應用程式執行個體訂閱任何現有主題,也可以建立新主題。使用 API 將用戶端應用程式訂閱至新主題 (Firebase 專案中尚未存在的主題) 時,系統會在 FCM 中建立該名稱的新主題,之後任何用戶端都能訂閱該主題。
您可以將註冊權杖清單傳遞至 Firebase Admin SDK 訂閱方法,讓對應裝置訂閱主題:
Node.js
// These registration tokens come from the client FCM SDKs.
const registrationTokens = [
'YOUR_REGISTRATION_TOKEN_1',
// ...
'YOUR_REGISTRATION_TOKEN_n'
];
// Subscribe the devices corresponding to the registration tokens to the
// topic.
getMessaging().subscribeToTopic(registrationTokens, topic)
.then((response) => {
// See the MessagingTopicManagementResponse reference documentation
// for the contents of response.
console.log('Successfully subscribed to topic:', response);
})
.catch((error) => {
console.log('Error subscribing to topic:', error);
});
Java
// These registration tokens come from the client FCM SDKs.
List<String> registrationTokens = Arrays.asList(
"YOUR_REGISTRATION_TOKEN_1",
// ...
"YOUR_REGISTRATION_TOKEN_n"
);
// Subscribe the devices corresponding to the registration tokens to the
// topic.
TopicManagementResponse response = FirebaseMessaging.getInstance().subscribeToTopic(
registrationTokens, topic);
// See the TopicManagementResponse reference documentation
// for the contents of response.
System.out.println(response.getSuccessCount() + " tokens were subscribed successfully");
Python
# These registration tokens come from the client FCM SDKs.
registration_tokens = [
'YOUR_REGISTRATION_TOKEN_1',
# ...
'YOUR_REGISTRATION_TOKEN_n',
]
# Subscribe the devices corresponding to the registration tokens to the
# topic.
response = messaging.subscribe_to_topic(registration_tokens, topic)
# See the TopicManagementResponse reference documentation
# for the contents of response.
print(response.success_count, 'tokens were subscribed successfully')
Go
// These registration tokens come from the client FCM SDKs.
registrationTokens := []string{
"YOUR_REGISTRATION_TOKEN_1",
// ...
"YOUR_REGISTRATION_TOKEN_n",
}
// Subscribe the devices corresponding to the registration tokens to the
// topic.
response, err := client.SubscribeToTopic(ctx, registrationTokens, topic)
if err != nil {
log.Fatalln(err)
}
// See the TopicManagementResponse reference documentation
// for the contents of response.
fmt.Println(response.SuccessCount, "tokens were subscribed successfully")
C#
// These registration tokens come from the client FCM SDKs.
var registrationTokens = new List<string>()
{
"YOUR_REGISTRATION_TOKEN_1",
// ...
"YOUR_REGISTRATION_TOKEN_n",
};
// Subscribe the devices corresponding to the registration tokens to the
// topic
var response = await FirebaseMessaging.DefaultInstance.SubscribeToTopicAsync(
registrationTokens, topic);
// See the TopicManagementResponse reference documentation
// for the contents of response.
Console.WriteLine($"{response.SuccessCount} tokens were subscribed successfully");
您也可以透過 Admin FCM API,將註冊權杖傳遞至適當的方法,取消訂閱裝置的主題:
Node.js
// These registration tokens come from the client FCM SDKs.
const registrationTokens = [
'YOUR_REGISTRATION_TOKEN_1',
// ...
'YOUR_REGISTRATION_TOKEN_n'
];
// Unsubscribe the devices corresponding to the registration tokens from
// the topic.
getMessaging().unsubscribeFromTopic(registrationTokens, topic)
.then((response) => {
// See the MessagingTopicManagementResponse reference documentation
// for the contents of response.
console.log('Successfully unsubscribed from topic:', response);
})
.catch((error) => {
console.log('Error unsubscribing from topic:', error);
});
Java
// These registration tokens come from the client FCM SDKs.
List<String> registrationTokens = Arrays.asList(
"YOUR_REGISTRATION_TOKEN_1",
// ...
"YOUR_REGISTRATION_TOKEN_n"
);
// Unsubscribe the devices corresponding to the registration tokens from
// the topic.
TopicManagementResponse response = FirebaseMessaging.getInstance().unsubscribeFromTopic(
registrationTokens, topic);
// See the TopicManagementResponse reference documentation
// for the contents of response.
System.out.println(response.getSuccessCount() + " tokens were unsubscribed successfully");
Python
# These registration tokens come from the client FCM SDKs.
registration_tokens = [
'YOUR_REGISTRATION_TOKEN_1',
# ...
'YOUR_REGISTRATION_TOKEN_n',
]
# Unubscribe the devices corresponding to the registration tokens from the
# topic.
response = messaging.unsubscribe_from_topic(registration_tokens, topic)
# See the TopicManagementResponse reference documentation
# for the contents of response.
print(response.success_count, 'tokens were unsubscribed successfully')
Go
// These registration tokens come from the client FCM SDKs.
registrationTokens := []string{
"YOUR_REGISTRATION_TOKEN_1",
// ...
"YOUR_REGISTRATION_TOKEN_n",
}
// Unsubscribe the devices corresponding to the registration tokens from
// the topic.
response, err := client.UnsubscribeFromTopic(ctx, registrationTokens, topic)
if err != nil {
log.Fatalln(err)
}
// See the TopicManagementResponse reference documentation
// for the contents of response.
fmt.Println(response.SuccessCount, "tokens were unsubscribed successfully")
C#
// These registration tokens come from the client FCM SDKs.
var registrationTokens = new List<string>()
{
"YOUR_REGISTRATION_TOKEN_1",
// ...
"YOUR_REGISTRATION_TOKEN_n",
};
// Unsubscribe the devices corresponding to the registration tokens from the
// topic
var response = await FirebaseMessaging.DefaultInstance.UnsubscribeFromTopicAsync(
registrationTokens, topic);
// See the TopicManagementResponse reference documentation
// for the contents of response.
Console.WriteLine($"{response.SuccessCount} tokens were unsubscribed successfully");
subscribeToTopic()
和 unsubscribeFromTopic()
方法會產生物件,其中包含 FCM 的回應。無論要求中指定的註冊權杖數量為何,傳回型別的格式都相同。
如果發生錯誤 (驗證失敗、權杖或主題無效等),這些方法會導致錯誤。如需錯誤代碼的完整清單 (包括說明和解決步驟),請參閱「Admin FCM API 錯誤」。