如何在Spring MVC中使用Firebase Admin SDK

<dependency>
    <groupId>com.google.firebase</groupId>
    <artifactId>firebase-admin</artifactId>
    <version>7.0.0</version>
</dependency>

import com.google.auth.oauth2.GoogleCredentials;
import com.google.firebase.FirebaseApp;
import com.google.firebase.FirebaseOptions;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.io.FileInputStream;
import java.io.IOException;

@Configuration
public class FirebaseConfig {

    @Bean
    public FirebaseApp firebaseApp() throws IOException {
        FileInputStream serviceAccount = new FileInputStream("path/to/serviceAccountKey.json");

        FirebaseOptions options = new FirebaseOptions.Builder()
                .setCredentials(GoogleCredentials.fromStream(serviceAccount))
                .setDatabaseUrl("https://your-project-id.firebaseio.com")
                .build();

        return FirebaseApp.initializeApp(options);
    }
}

import com.google.firebase.FirebaseApp;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseToken;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class FirebaseController {

    @Autowired
    private FirebaseApp firebaseApp;

    @GetMapping("/verifyToken")
    public String verifyToken(String idToken) {
        try {
            FirebaseToken decodedToken = FirebaseAuth.getInstance(firebaseApp).verifyIdToken(idToken);
            String uid = decodedToken.getUid();
            // 在这里可以进行用户身份验证等操作
            return "Token验证成功，用户ID：" + uid;
        } catch (Exception e) {
            e.printStackTrace();
            return "Token验证失败";
        }
    }
}