错误原因：java.io.IOException：{“错误”：{“代码”：403，“消息”：“权限被拒绝。无法执行此操作”}}

Question

我收到此错误原因：java.io.IOException：{“错误”：{“代码”：403，“消息”：“权限被拒绝。无法执行此操作”}}或用户没有访问此对象的权限。当我尝试在 Firebase 中上传数据时 firestore，我已经在 firestore 规则中授予了权限。

这是我的代码

package com.example.db1;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;

import android.Manifest;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.provider.MediaStore;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.ProgressBar;
import android.widget.Toast;


import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.OnFailureListener;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.firestore.DocumentReference;
import com.google.firebase.firestore.FirebaseFirestore;
import com.google.firebase.storage.FirebaseStorage;
import com.google.firebase.storage.StorageReference;
import com.google.firebase.storage.UploadTask;


import java.io.ByteArrayOutputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;


public class Register extends AppCompatActivity {

    private static final String TAG = "MyActivity";
    EditText Name, Email, Contact,Password;
    Button Register;
    ImageView user_image;
    FirebaseFirestore db;
    FirebaseAuth mAuth;
    ProgressBar progressBar;


    String user_id;
    Uri download_uri;
    StorageReference storageReference;
    Bitmap compressed;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_register);

        Name = findViewById(R.id.name);
        Email = findViewById(R.id.email);
        Contact = findViewById(R.id.contact);
        Register = findViewById(R.id.register);
        Password = findViewById(R.id.password);
        user_image = findViewById(R.id.im1);
        progressBar = findViewById(R.id.pb1);

        progressBar.setVisibility(View.GONE);

        db = FirebaseFirestore.getInstance();
        mAuth = FirebaseAuth.getInstance();

        storageReference = FirebaseStorage.getInstance().getReference();

        user_image.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {


                    if (ContextCompat.checkSelfPermission(Register.this, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {


                        Toast.makeText(Register.this, "Permission Denied", Toast.LENGTH_LONG).show();


                        ActivityCompat.requestPermissions(Register.this, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, 1);
                    } else {
                        choseImage();
                    }
                } else {
                    choseImage();
                }


            }
        });

        Register.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                final String name = Name.getText().toString().trim();
                final String email = Email.getText().toString().trim();
                final String contact = Contact.getText().toString().trim();
                final String pass = Password.getText().toString().trim();



                if(!TextUtils.isEmpty(email) && !TextUtils.isEmpty(name) && !TextUtils.isEmpty(contact) && !TextUtils.isEmpty(pass) && user_image!=null){

                    progressBar.setVisibility(View.VISIBLE);

                    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();


                    compressed.compress(Bitmap.CompressFormat.JPEG, 100, byteArrayOutputStream);


                    byte[] thumbData = byteArrayOutputStream.toByteArray();


                    UploadTask image_path = storageReference.child("user_image").child(user_id + ".jpg").putBytes(thumbData);


                    image_path.addOnCompleteListener(new OnCompleteListener<UploadTask.TaskSnapshot>() {


                        @Override


                        public void onComplete(@NonNull Task<UploadTask.TaskSnapshot> task) {

                            if (task.isSuccessful()) {
                                storeData(task, name, email, contact, pass);
                            } else {
                                String error = task.getException().getMessage();
                                Toast.makeText(Register.this, "(IMAGE Error) : " + error, Toast.LENGTH_LONG).show();
                            }
                        }

                    });
                }
                else{
                    progressBar.setVisibility(View.GONE);
                    Toast.makeText(Register.this,"Please fill all fields",Toast.LENGTH_SHORT).show();
                }
            }
        });
    }

    private void storeData(Task<UploadTask.TaskSnapshot> task, String name, String email, String contact, String pass) {

        if (task != null) {
            download_uri = task.getResult().getUploadSessionUri();

            Map<String, Object> user = new HashMap<>();
            user.put("mName", name);
            user.put("mEmail", email);
            user.put("mContact", contact);
            user.put("mPassword", pass);
            user.put("userImage",download_uri.toString());

            db.collection("users").add(user).addOnSuccessListener(new OnSuccessListener<DocumentReference>() {
                @Override
                public void onSuccess(DocumentReference documentReference) {
                    Log.d(TAG, "DocumentSnapshot added with ID: " + documentReference.getId());
                    Toast.makeText(Register.this,"User data save successfully",Toast.LENGTH_SHORT).show();
                    startActivity(new Intent(Register.this,Result.class));
                }
            })
                    .addOnFailureListener(new OnFailureListener() {
                        @Override
                        public void onFailure(@NonNull Exception e) {
                            Log.w(TAG, "Error adding document", e);
                            Toast.makeText(Register.this,"User data is not Save",Toast.LENGTH_SHORT).show();
                        }
                    });
        } else {
            Toast.makeText(Register.this,"Error in Data Upload",Toast.LENGTH_SHORT).show();
        }
    }

    private void choseImage() {

        Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
        intent.setType("image/*");
        startActivityForResult(Intent.createChooser(intent,"pick an image"),1);
    }
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        if (requestCode == 1 && resultCode== RESULT_OK) {

            try {
                InputStream inputStream = getContentResolver().openInputStream(data.getData());
                compressed = BitmapFactory.decodeStream(inputStream);
                user_image.setImageBitmap(compressed);
            }catch (FileNotFoundException e){
                e.printStackTrace();
            }
        }
    }
}

   

Answer 1

值得看看你的Firestore rules：

基本规则由指定文档路径的匹配语句和允许读取指定数据时详细说明的允许表达式组成：

service cloud.firestore {
  match /databases/{database}/documents {

    // Match any document in the 'cities' collection
    match /cities/{city} {
      allow read: if <condition>;
      allow write: if <condition>;
    }
  }
}

您的错误指向此注意：

您只能访问您的安全规则明确允许您访问的文档。

例如：在@Alex Mamo 提到的question 中，解决方案是：

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