小编Jac*_*ael的帖子

我正在尝试通过FCM向我的Web应用发送消息。不幸的是，我收到以下错误消息，我无法独自解决...

通过POSTMAN我收到了JSON：

 {
    "multicast_id": 7441926471010389687,
    "success": 0,
    "failure": 1,
    "canonical_ids": 0,
    "results": [
        {
            "error": "NotRegistered"
        }
    ]
}

这是我仅有的错误消息。请参阅我发送给FCM的以下POSTMAN配置POST消息

有人已经面临过同样的问题吗？我找不到任何解决办法来解决我在互联网上的问题...

另请参见下面的Firebase.java

package com.inovans.backend.web.rest.firebase;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.concurrent.ExecutionException;

import javax.annotation.PostConstruct;

import org.springframework.stereotype.Service;

import com.google.auth.oauth2.GoogleCredentials;
import com.google.firebase.FirebaseApp;
import com.google.firebase.FirebaseOptions;
import com.google.firebase.messaging.FirebaseMessaging;
import com.google.firebase.messaging.Message;

@Service
public class Firebase {

    @PostConstruct
    void initialierMyFirebase() {
        this.initializeFirebase();
    }

    private void initializeFirebase() {

        // if(this.firebaseApp.getApps().isEmpty()) {

        FileInputStream serviceAccount = null;
        try {
            serviceAccount = new FileInputStream(
                    "src/main/java/com/inovans/backend/web/rest/firebase/emergency-manager-57773-firebase-adminsdk-x4p6o-c2ea07c8f4.json");
        } catch (FileNotFoundException e) { …