用户无权访问此对象。 Firebase 存储 android

User does not have permission to access this object . Firebase storage android

我是 Firebase 存储的新手。为了学习它,我制作了一个简单的应用程序,它有一个按钮和一个 ImageView。当我单击该按钮时,图像 (from drawable) 会显示在 ImageView 上。我也写了在Firebase上上传图片的代码,但是onAddFailureListener的异常消息给出消息User does not have permission to access this object.我该怎么办?

package com.example.asad.save_photo;

import android.app.Activity;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.net.Uri;
import android.os.Environment;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;

import com.google.android.gms.tasks.OnFailureListener;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.firebase.storage.FirebaseStorage;
import com.google.firebase.storage.StorageMetadata;
import com.google.firebase.storage.StorageReference;
import com.google.firebase.storage.UploadTask;

import java.io.ByteArrayOutputStream;
import java.io.File;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        FirebaseStorage storage = FirebaseStorage.getInstance();

        StorageReference storageRef = storage.getReferenceFromUrl("gs://savephoto-a1cc3.appspot.com");

        final StorageReference mountainsRef = storageRef.child("asad");

        Button butt = (Button) findViewById(R.id.button);


        butt.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                ImageView imageView = (ImageView) findViewById(R.id.image);
                imageView.setImageResource(R.drawable.back2);
                //imageView.setImageResource(R.drawable.back2);

                imageView.setDrawingCacheEnabled(true);
                imageView.buildDrawingCache();
                Bitmap bitmap = imageView.getDrawingCache();


                ByteArrayOutputStream baos = new ByteArrayOutputStream();
                bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
                final byte[] data = baos.toByteArray();

                UploadTask uploadTask = mountainsRef.putBytes(data);
                uploadTask.addOnFailureListener(new OnFailureListener() {
                    @Override
                    public void onFailure(@NonNull Exception exception) {
                        // Handle unsuccessful uploads
                        showToast(exception.getMessage());
                    }
                });
                        uploadTask.addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
                    @Override
                    public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
                        // taskSnapshot.getMetadata() contains file metadata such as size, content-type, and download URL.
                        //Uri downloadUrl = taskSnapshot.getDownloadUrl();
                        showToast("success !!!!!");
                    }
                });


            }
        });

    }

    public void showToast(String s) {
        Toast.makeText(this,s,Toast.LENGTH_LONG).show();
    }
}

这是我的 firebase 存储规则

service firebase.storage {
  match /b/savephoto-a1cc3.appspot.com/o {
    allow read,write;
  }
}

使用 match /{allPaths=**} 更新您的安全规则以表明 public 允许在所有路径上进行读写访问:

service firebase.storage {
  match /b/savephoto-a1cc3.appspot.com/o {
    match /{allPaths=**} {
      // Allow access by all users
      allow read, write;
    }
  }
}

文档 Sample Rules 部分的选项卡中提供了各种默认规则。

在 Firebase 控制台中更改存储规则

service firebase.storage {
  match /b/{bucket}/o {
    match /{allPaths=**} {
      allow read, write: if request.auth != null;
    }
  }
}

转到存储 -> 规则选项卡

添加这个

// Anyone can read or write to the bucket, even non-users of your app.
// Because it is shared with Google App Engine, this will also make
// files uploaded via GAE public.
service firebase.storage {
  match /b/{bucket}/o {
    match /{allPaths=**} {
      allow read, write;
    }
  }
}

只需转到存储 - 规则。输入如下规则,将桶名称替换为您自己的桶名称。您可以转到存储 - 文件找到存储桶名称。

它应该看起来像这样: 我的应用程序-xxxx.appspot.com

这就是您所需要的。如果您只是为了测试目的,则不需要启用身份验证。如果需要身份验证,可以稍后添加。

这些解决方案确实没有解决我的问题。

解决我问题的是那些行:

在应用程序模块中

implementation 'com.google.firebase:firebase-database:15.0.0'
implementation 'com.google.firebase:firebase-storage:15.0.0'
implementation 'com.google.firebase:firebase-auth:15.0.0'

以及用于上传和下载的代码 link

private void uploadImageToFirebase(Bitmap bmp) {

    try {
        String file_path = Environment.getExternalStorageDirectory().getAbsolutePath() +
                "/news";
        File dir = new File(file_path);
        if (!dir.exists())
            dir.mkdirs();
        File file = new File(dir, "sketchpad" + "_" + ".png");
        FileOutputStream fOut = new FileOutputStream(file);
        bmp.compress(Bitmap.CompressFormat.PNG, 100, fOut);
        fOut.flush();
        fOut.close();
        Log.i("SECONDACTIVITY", "ADDED SUCCESSFULLY");

        Uri file2 = Uri.fromFile(file);


        //Now Upload
        final StorageReference storageRef = FirebaseStorage.getInstance().getReference();
        StorageReference riversRef = storageRef.child(file.getName());
        UploadTask uploadTask;
        uploadTask = riversRef.putFile(file2);
        progressDialog.show();
        progressDialog.setCancelable(false);


        uploadTask.addOnProgressListener(new OnProgressListener<UploadTask.TaskSnapshot>() {
            @Override
            public void onProgress(UploadTask.TaskSnapshot taskSnapshot) {
                double progress = (100.0 * taskSnapshot.getBytesTransferred()) / taskSnapshot.getTotalByteCount();
                progressDialog.incrementProgressBy((int) progress);
            }
        });
        uploadTask.addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
            @Override
            public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
                progressDialog.dismiss();
                Uri DownloadLink = taskSnapshot.getDownloadUrl();
                String imgUrl = DownloadLink.toString();
                FirebaseDatabase.getInstance().getReference().child("image_link").setValue(imgUrl);
            }
        });
        uploadTask.addOnFailureListener(new OnFailureListener() {
            @Override
            public void onFailure(@NonNull Exception e) {
                progressDialog.dismiss();
            }
        });


    } catch (IOException e) {
        e.printStackTrace();
    }


}
service firebase.storage {
  match /b/fir-upload-a2fa6.appspot.com/o {
    match /{allPaths=**} {
      // Allow access by all users
      allow read, write;
    }
  }
}

问题出在您的 Firebase 存储规则上。改成

rules_version = '2';
service firebase.storage {
  match /b/{bucket}/o {
    match /{allPaths=**} {
      allow read, write: if request.auth != null;
    }
  }
}

确保 if request.auth != null

Firebase 存储错误(已解决) 1. 转到您正在处理的项目下的 firebase 控制台 2. 在 firebase 控制台上的存储和规则下编辑服务 firebase.storage 到。

service firebase.storage {
  match /b/{bucket}/o {
    match /{allPaths=**} {
      allow read, write;
    }
  }
}

我正在添加这个答案,希望它能对 Firebase 中的某个人有所帮助:

  1. 转到“存储”

  2. Select“规则”选项卡并按以下方式编辑规则:

    service firebase.storage {
       match /b/{bucket}/o {
         match /{allPaths=**} {
           // Allow access by all users
           allow read, write: if request.auth != null;
         }
       }
     }
    

注意:请确保您拥有与上面完全相同的内容,不要将 {bucket} 替换为您的项目名称。

按照以下步骤操作

  1. 转到“存储”

  2. Select“规则”选项卡并按以下方式编辑规则:

//如果您的应用程序具有身份验证功能(登录),则使用此:-

rules_version = '2';
service firebase.storage {
  match /b/{bucket}/o {
    match /{allPaths=**} {
      allow read, write: if request.auth != null;
    }
  }
}

//如果您的应用程序没有登录功能(直接任何用户都可以访问存储)然后使用这个:-

rules_version = '2';
service firebase.storage {
  match /b/{bucket}/o {
    match /{allPaths=**} {
      allow read, write;
    }
  }
}

Firebase 存储错误(已解决) 1. 转到您正在处理的项目下的 firebase 控制台 2. 在 firebase 控制台上的存储下和规则下编辑服务 firebase.storage 至。

service firebase.storage {
 match /b/{bucket}/o {
  match /{allPaths=**} {
  allow read, write;
  }
 }
}

注意:如果还没有解决这个问题,请检查您的 firebase 计划是否已过期。

请转到您在 firebase 中的 storage/rules 文件夹并粘贴以下代码。

 rules_version = '2';
service firebase.storage {
  match /b/{bucket}/o {
    match /{allPaths=**} {
      allow read, write;
    }
  }
}