Firebase getDownloadURL 不工作 Android

Question

真的需要帮助，这是我的 Firebase 存储安全规则

service firebase.storage {
  match /b/shoppinglist-XXXX.appspot.com/o {
    match /{allPaths=**} {
      allow read, write;
    }
  }
}

这是我获取 URL 链接的 Java 代码

storageRef = FirebaseStorage.getInstance().getReference();
   pathRef = storageRef.child("MyBook.pdf");

    storageRef.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
        @Override
        public void onSuccess(Uri uri) {
            Log.d(tag, "MyDownloadLink:  " + uri);
        }
    });

这是我的错误：

     StorageException has occurred.
     User does not have permission to access this object.
{  "error": {    "code": 403,    "message": "Developer credentials required."  }}
                                                                            java.io.IOException: {  "error": {    "code": 403,    "message": "Developer credentials required."  }}

有人可以帮忙吗！

Answer 1

您可能打算从pathRef 下载，而不是storageRef。不允许从存储树的根目录下载。