Firebase Auth在Spring Boot中未能初始化

huangapple
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英文:

Firebase Auth not getting initialized in spring boot

问题

我在我的Spring Boot应用程序（API应用程序）中使用Firebase Admin SDK。

在IntelliJ中本地运行时，一切正常。但是在部署到Tomcat时，出现空指针异常（NPE）。

在Spring Boot应用程序中：

  1. public static void main(String[] args) {
  2.     SpringApplication.run(InfanoApplication.class, args);
  4.     try {
  5.         ClassLoader classloader = Thread.currentThread().getContextClassLoader();
  7.         File file = new File(classloader.getResource("firebase2.json").getFile());
  8.         logger.info("FILE PATH : " + file.getAbsolutePath());
  9.         FileInputStream serviceAccount = new FileInputStream(file.getAbsolutePath());
  11.         FirebaseOptions options = new FirebaseOptions.Builder()
  12.                 .setCredentials(GoogleCredentials.fromStream(serviceAccount))
  13.                 .setDatabaseUrl(FB_BASE_URL)
  14.                 .build();
  16.         firebaseApp = FirebaseApp.initializeApp(options);
  17.         logger.info("FIREBASE NAME : " + firebaseApp.getName());
  18.     } catch (IOException e) {
  19.         e.printStackTrace();
  20.     }
  21. }

在API代码中：

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

错误信息：

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

有人能帮忙解决这个问题吗？提前谢谢。

英文:

I am using firebase admin sdk in my spring boot app. (API app)

When I run locally in intelliJ its working fine. But when deployed in tomcat its giving me NPE.

In Springboot application

  1.  public static void main(String[] args) {
  2.     SpringApplication.run(InfanoApplication.class, args);
  4.     try {
  5.         ClassLoader classloader = Thread.currentThread().getContextClassLoader();
  7.         File file = new File(classloader.getResource("firebase2.json").getFile());
  8.         logger.info("FILE PATH : " + file.getAbsolutePath());
  9.         FileInputStream serviceAccount = new FileInputStream(file.getAbsolutePath());
  11.         FirebaseOptions options = new FirebaseOptions.Builder()
  12.                 .setCredentials(GoogleCredentials.fromStream(serviceAccount))
  13.                 .setDatabaseUrl(FB_BASE_URL)
  14.                 .build();
  16.         firebaseApp = FirebaseApp.initializeApp(options);
  17.         logger.info("FIREBASE NAME : "+firebaseApp.getName());
  18.     } catch (IOException e) {
  19.         e.printStackTrace();
  20.     }
  21. }

In API code

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

ERROR:

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

Can someone help in fixing this issue. Thank you in advance.

答案1

得分: 4

你不应该在主方法中像这样创建 Firebase 的实例。很可能你的服务账户没有在正确的类路径中被找到。我会创建一个 Spring 配置，在应用程序启动时创建一个 Firebase 应用。我已经将我的服务账户放在 resources 文件夹的根目录下。

  1. @Configuration
  2. public class FirebaseConfig {
  4.     //TODO: 在你的情况下可能会有其他配置
  5.     @Value(value = "classpath:serviceAccount.json")
  6.     private Resource serviceAccountResource;
  8.     @Bean
  9.     public FirebaseApp createFireBaseApp() throws IOException {
  10.         InputStream serviceAccount = serviceAccountResource.getInputStream();
  12.         FirebaseOptions options = new FirebaseOptions.Builder()
  13.                 .setCredentials(GoogleCredentials.fromStream(serviceAccount))
  14.                 .setDatabaseUrl("<db-url>")
  15.                 .setStorageBucket("<storage-url>")
  16.                 .build();
  18.         //添加日志记录
  19.         System.out.println("Firebase 配置已初始化");
  21.         return FirebaseApp.initializeApp(options);
  22.     }
  24.     
  25.     @Bean
  26.     @DependsOn(value = "createFireBaseApp")
  27.     public StorageClient createFirebaseStorage() {
  28.         return StorageClient.getInstance();
  29.     }
  31.     @Bean
  32.     @DependsOn(value = "createFireBaseApp")
  33.     public FirebaseAuth createFirebaseAuth() {
  34.         return FirebaseAuth.getInstance();
  35.     }
  37.     @Bean
  38.     @DependsOn(value = "createFireBaseApp")
  39.     public FirebaseDatabase createFirebaseDatabase() {
  40.         return FirebaseDatabase.getInstance();
  41.     }
  43.     @Bean
  44.     @DependsOn(value = "createFireBaseApp")
  45.     public FirebaseMessaging createFirebaseMessaging() {
  46.         return FirebaseMessaging.getInstance();
  47.     }
  48. }

现在，如果我想在任何一个服务类中使用 Firebase Auth，我只需执行以下操作：

  1. @Service
  2. class MyService {
  4.     @Autowired
  5.     private FirebaseAuth firebaseAuth;
  7.     //TODO: 可能应该有返回类型
  8.     public void findUser(String mobile) {
  9.         firebaseAuth.getUserByPhoneNumber(mobile);
  10.     }
  11. }
英文:

You shouldn't create an instance of Firebase like this in the main method. Probably your service account is not being found in the proper classpath. I would create a Spring Configuration which creates a Firebase app on application startup. I have kept my service account in the root of resources folder.

  1. @Configuration
  2. public class FirebaseConfig {
  4.     //TODO: In your case maybe something else
  5.     @Value(value = &quot;classpath:serviceAccount.json&quot;)
  6.     private Resource serviceAccountResource;
  8.     @Bean
  9.     public FirebaseApp createFireBaseApp() throws IOException {
  10.         InputStream serviceAccount = serviceAccountResource.getInputStream();
  12.         FirebaseOptions options = new FirebaseOptions.Builder()
  13.                 .setCredentials(GoogleCredentials.fromStream(serviceAccount))
  14.                 .setDatabaseUrl(&quot;&lt;db-url&gt;&quot;)
  15.                 .setStorageBucket(&quot;&lt;storage-url&gt;&quot;)
  16.                 .build();
  18.         //Add loggers
  19.         System.out.println(&quot;Firebase config initialized&quot;);
  21.         return FirebaseApp.initializeApp(options);
  22.     }
  24.     
  25.     @Bean
  26.     @DependsOn(value = &quot;createFireBaseApp&quot;)
  27.     public StorageClient createFirebaseStorage() {
  28.         return StorageClient.getInstance();
  29.     }
  31.     @Bean
  32.     @DependsOn(value = &quot;createFireBaseApp&quot;)
  33.     public FirebaseAuth createFirebaseAuth() {
  34.         return FirebaseAuth.getInstance();
  35.     }
  37.     @Bean
  38.     @DependsOn(value = &quot;createFireBaseApp&quot;)
  39.     public FirebaseDatabase createFirebaseDatabase() {
  40.         return FirebaseDatabase.getInstance();
  41.     }
  43.     @Bean
  44.     @DependsOn(value = &quot;createFireBaseApp&quot;)
  45.     public FirebaseMessaging createFirebaseMessaging() {
  46.         return FirebaseMessaging.getInstance();
  47.     }
  48. }

Now if I want to use Firebase Auth in any of my service classes I would just do the following:

  1. @Service
  2. class MyService {
  4.     @Autowired
  5.     private FirebaseAuth firebaseAuth;
  7.     //TODO: Probably should have return type
  8.     public void findUser(String mobile) {
  9.         firebaseAuth.getUserByPhoneNumber(mobile);
  10.     }
  11. }

huangapple
  • 本文由 发表于 2020年8月26日 03:57:05
  • 转载请务必保留本文链接：https://go.coder-hub.com/63586220.html
  • firebase
  • firebase-admin
  • firebase-authentication
  • java
  • spring-boot
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