Java Firebase身份验证未在spring引导中初始化

我正在spring boot应用程序中使用firebase admin sdk。（API应用程序）

当我在intelliJ本地运行时，它工作正常。但当部署在tomcat中时，它给了我NPE

在Springboot应用程序中

 public static void main(String[] args) {
    SpringApplication.run(InfanoApplication.class, args);

    try {
        ClassLoader classloader = Thread.currentThread().getContextClassLoader();

        File file = new File(classloader.getResource("firebase2.json").getFile());
        logger.info("FILE PATH : " + file.getAbsolutePath());
        FileInputStream serviceAccount = new FileInputStream(file.getAbsolutePath());

        FirebaseOptions options = new FirebaseOptions.Builder()
                .setCredentials(GoogleCredentials.fromStream(serviceAccount))
                .setDatabaseUrl(FB_BASE_URL)
                .build();

        firebaseApp = FirebaseApp.initializeApp(options);
        logger.info("FIREBASE NAME : "+firebaseApp.getName());
    } catch (IOException e) {
        e.printStackTrace();
    }
}

在API代码中

userRecord = FirebaseAuth.getInstance(InfanoApplication.firebaseApp).getUserByPhoneNumber(mobile);

错误：

java.lang.NullPointerException
at com.google.firebase.ImplFirebaseTrampolines.getService(ImplFirebaseTrampolines.java:62)
at com.google.firebase.auth.FirebaseAuth.getInstance(FirebaseAuth.java:101)

---

有人能帮忙解决这个问题吗。提前感谢。

您不应该在main方法中创建这样的Firebase实例。可能在正确的类路径中找不到您的服务帐户。我会在应用程序启动时创建一个Firebase应用程序。我已将我的服务帐户保存在资源文件夹的根文件夹中

@Configuration
public class FirebaseConfig {

    //TODO: In your case maybe something else
    @Value(value = "classpath:serviceAccount.json")
    private Resource serviceAccountResource;

    @Bean
    public FirebaseApp createFireBaseApp() throws IOException {
        InputStream serviceAccount = serviceAccountResource.getInputStream();

        FirebaseOptions options = new FirebaseOptions.Builder()
                .setCredentials(GoogleCredentials.fromStream(serviceAccount))
                .setDatabaseUrl("<db-url>")
                .setStorageBucket("<storage-url>")
                .build();

        //Add loggers
        System.out.println("Firebase config initialized");

        return FirebaseApp.initializeApp(options);
    }

    
    @Bean
    @DependsOn(value = "createFireBaseApp")
    public StorageClient createFirebaseStorage() {
        return StorageClient.getInstance();
    }

    @Bean
    @DependsOn(value = "createFireBaseApp")
    public FirebaseAuth createFirebaseAuth() {
        return FirebaseAuth.getInstance();
    }

    @Bean
    @DependsOn(value = "createFireBaseApp")
    public FirebaseDatabase createFirebaseDatabase() {
        return FirebaseDatabase.getInstance();
    }

    @Bean
    @DependsOn(value = "createFireBaseApp")
    public FirebaseMessaging createFirebaseMessaging() {
        return FirebaseMessaging.getInstance();
    }
}

---

NPE在抱怨什么是null？@DougStevenson FirebaseAuth.getInstance正在返回null我只是按照你的步骤，我得到了以下错误。java.lang.NoSuchMethodError:“long com.google.common.io.ByTestStreams.detain（java.io.InputStream）”很抱歉，该问题是由于firebase admin sdk版本从6.13.0更改为7.0.0所致。一旦恢复版本，该问题就消失了。

@Service
class MyService {

    @Autowired
    private FirebaseAuth firebaseAuth;

    //TODO: Probably should have return type
    public void findUser(String mobile) {
        firebaseAuth.getUserByPhoneNumber(mobile);
    }
}