Java servlet中Firebase管理员密钥的路径 [英] Path to Firebase Admin Key in Java servlet

问题描述

我不断收到

FileNotFoundException

FileNotFoundException

当尝试使用 Firebase 初始化我的应用时说找不到我的adminsdk.json服务密钥.

when trying to initialize my app with Firebase saying it cannot find my adminsdk.json service key.

这是一个特定的错误，因为我正在尝试在 Android模块Servlet 中初始化Firebase.

This is a specific error as I am trying to initialize Firebase in an Android Module Servlet.

这是我的模块项目结构:

Here is what my module project structure looks like:

这是我的Serlvet中试图初始化FirebaseOptions的代码:

And here is the code in my Serlvet that is trying to intialize FirebaseOptions:

FirebaseOptions options = null;
        try {
            options = new FirebaseOptions.Builder()
                    .setServiceAccount(new FileInputStream("leadsbackend\\src\\main\\webapp\\tt-social-firebase-adminsdk.json"))
                    .setDatabaseUrl(FIREBASE_DATABASE_URL)
                    .build();
        } catch (Exception e) {
            e.printStackTrace();
        }

这是控制台中的错误:

java.io.FileNotFoundException: TTLeads\leadsbackend\src\main\webapp\tt-social-firebase-adminsdk.json (The system cannot find the path specified)
    at java.io.FileInputStream.open0(Native Method)
    at java.io.FileInputStream.open(FileInputStream.java:195)
    at java.io.FileInputStream.<init>(FileInputStream.java:138)
    at java.io.FileInputStream.<init>(FileInputStream.java:93)
    at com.nicholas.leadsbackend.LeadsServlet.sendToFirebase(LeadsServlet.java:63)
    at com.nicholas.leadsbackend.LeadsServlet.sendToBase(LeadsServlet.java:57)
    at com.nicholas.leadsbackend.LeadsServlet.doGet(LeadsServlet.java:37)

我很确定我没有正确设置URI，但是有人将如何正确引用包结构中的文件?任何帮助都非常感谢.

I am pretty sure I am not setting the URI correctly, but how would someone be able to reference a file in your package structure correctly? Any help is very appreciated.

提前谢谢！

推荐答案

当我在以下位置偶然发现这篇文章时，我已经绞尽脑汁，无法读取系统中的JSON密钥文件: atimothee.xyz/blog/2016/09/17/how-to-use-facebook-account-kit-to-authenticate-firebase-app-users-on-android/http://atimothee.xyz/blog/2016/09/17/how-to-use-facebook-account-kit-to-authenticate-firebase-app-users-on-android/"rel =" nofollow noreferrer>如何使用Facebook帐户工具包在以下位置对Firebase应用程序用户进行身份验证Android .在本文中，它详细说明了如何在Cloud Endpoints模块中设置Firebase Admin SDK.我将在这里总结步骤:

I had cracked my head to enable reading of JSON key file in the system, when I stumbled on this article at: How to Use Facebook Account Kit to Authenticate Firebase App Users on Android. In this article, it explains in details to how to setup Firebase Admin SDK in a Cloud Endpoints module. I will summarize the steps here:

1. 将 serviceAccountKey.json 放置在应用程序的WEB-INF文件夹中.

2. 将此内容插入您的appengineweb.xml:

1. Place your serviceAccountKey.json in your apps' WEB-INF folder.

2. Insert this in your appengineweb.xml:

<resource-files>
    <include path="/**.json" />
</resource-files>

定义一个类，如下所示.强制使用单独的init()方法:

Define a class somewhere like the one below. Have a seperate init() method compulsorily:

public class FirebaseService {

public static void init() {
    try {
        FileInputStream serviceAccount = new FileInputStream(new File("WEB-INF/serviceAccountKey.json"));
        FirebaseOptions options = new FirebaseOptions.Builder()
            .setCredential(FirebaseCredentials.fromCertificate(serviceAccount))
            .setDatabaseUrl("https://[YOUR_APP_NAME].firebaseio.com/")
            .build();
        FirebaseApp.initializeApp(options);
        System.out.print("In Firebase Init module...!!");
    } catch(FileNotFoundException ignored) {}
}

在您定义的任何端点中的任何 static {} 代码中调用此方法.例如:

Invoke this method in any of the static{} code in any of the Endpoints defined by you. For example:

static {
    ObjectifyService.register(FCMTokenMap.class);
    FirebaseService.init();
}

1. 您可以从任何地方调用涉及数据库，FCM等的其他Firebase方法.

1. You can invoke other Firebase methods which involve Database, FCM, etc from anywhere..!

这篇关于Java servlet中Firebase管理员密钥的路径的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！