我如何设置壁炉安全规则

Question

我正在使用Firebase实时数据库。我有一个应用程序，用户可以在主页上共享帖子，评论并喜欢帖子，互相分数和评论，并互相发送消息。用户通过注册输入应用程序。有邮件验证要求。我的应用程序正在获取大量数据下载。我想这是因为没有安全规则。 如何设置此应用程序的安全规则？

我的数据库参考名称：

Post
PostLikes
PostComment
PostCommentLikes
PostCategory
PostFollow
OnlineUsers
Users
UsersPost
UsersFriendsList
UsersContact
UsersProfileComments
UsersRatings
UsersNotifications
NotificationsSeens
BlockedUsersList
Tokens
Lastmessage
message
PremiumAccountHolders

现在是我的规则：

{
  "rules": {
    ".read": true,
    ".write": true
  }
}

当我这样做时，主页将打开，但是当我按排行榜类（ref name usersratings）时，应用程序关闭。它说您无权访问。 ：

{
  "rules": {
    "users": {
      "$uid": {
        ".read": "$uid === auth.uid",
        ".write": "$uid === auth.uid"
      }
    }
  }
}

- update-关闭错误：

Fatal Exception: com.google.firebase.database.DatabaseException
Firebase Database error: Permission denied


com.google.firebase.database.DatabaseError.toException (DatabaseError.java:230)
com.**.**.ScorBoard$3.onCancelled (ScorBoard.java:141)
com.google.firebase.database.core.ValueEventRegistration.fireCancelEvent (ValueEventRegistration.java:80)
com.google.firebase.database.core.view.CancelEvent.fire (CancelEvent.java:40)
com.google.firebase.database.core.view.EventRaiser$1.run (EventRaiser.java:55)
android.os.Handler.handleCallback (Handler.java:883)
android.os.Handler.dispatchMessage (Handler.java:100)
android.os.Looper.loop (Looper.java:237)
android.app.ActivityThread.main (ActivityThread.java:8167)
java.lang.reflect.Method.invoke (Method.java)
com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:496)
com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1100)

---更新---示例关闭Scorboard（learderboard）类：

        mAuth = FirebaseAuth.getInstance();
        currentUserID = mAuth.getCurrentUser().getUid();
        UsersRef = FirebaseDatabase.getInstance().getReference().child("Users");
        RatingsRef = FirebaseDatabase.getInstance().getReference().child("Ratings");
        RatingsRef.keepSynced(false);

        RatingsRef.child(currentUserID).child("Ratings").addListenerForSingleValueEvent(new ValueEventListener() {
            @Override
            public void onDataChange(DataSnapshot dataSnapshot) {
                double sum =  0.0;

                try {
                    for (DataSnapshot ds: dataSnapshot.getChildren()) {
                        Map<String,Object> map = (Map<String, Object>) ds.getValue();
                        Object rating =  map.get("rating");
                        Double pvalue = Double.parseDouble(String.valueOf(rating));
                        sum += pvalue;



                        Map messageTextBody2 = new HashMap();
             
                       messageTextBody2.put("point", sum);

                        RatingsRef.child(currentUserID).updateChildren(messageTextBody2);


                    }
                }catch (Exception e){

                }


            }
            @Override
            public void onCancelled(DatabaseError databaseError) {
                throw databaseError.toException(); // don't ignore errors
            }
        });

        getScor();


public void getScor(){

        FirebaseRecyclerOptions<Comments> options =
                new FirebaseRecyclerOptions.Builder<Comments>()
                        .setQuery(RatingsRef.orderByChild("point").limitToLast(currentpage * total_ITEMS),Comments.class)
                        .build();

        FirebaseRecyclerAdapter<Comments,ScorViewHolder> adapter
                =new FirebaseRecyclerAdapter<Comments, ScorViewHolder>(options)
        {

            @Override
            protected void onBindViewHolder(@NonNull final ScorBoard.ScorViewHolder holder, int position, @NonNull Comments model) {
                final String visit_user_id = getRef(position).getKey();

                scorprog.setVisibility(View.GONE);
            holder.mView.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        Intent intent = new Intent(context,ProfileClick.class);
                        intent.putExtra("visit_user_id",visit_user_id);
                        startActivity(intent);
                    }
                });

                UsersRef.child(visit_user_id).addListenerForSingleValueEvent(new ValueEventListener() {
                    @Override
                    public void onDataChange(@NonNull DataSnapshot dataSnapshot) {



                            if (dataSnapshot.hasChild("name")){
                                final String myUsername = dataSnapshot.child("name").getValue().toString();
                                holder.userName.setText(myUsername);
                            }

                    }

                    @Override
                    public void onCancelled(@NonNull DatabaseError databaseError) {

                    }
                });
                RatingsRef.child(visit_user_id).addListenerForSingleValueEvent(new ValueEventListener() {
                    @Override
                    public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
                        if (dataSnapshot.hasChild("point")){
                            final String myPoint = dataSnapshot.child("point").getValue().toString();
                            holder.userPoint.setText(myPoint+" "+"Point");
                        }else  {
                            holder.userPoint.setText("0 Point");
                        }

                    }

                    @Override
                    public void onCancelled(@NonNull DatabaseError databaseError) {

                    }
                });

            }

            @NonNull
            @Override
            public ScorBoard.ScorViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
                View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.scorboard_model_layout,viewGroup,false);
                ScorBoard.ScorViewHolder viewHolder = new ScorBoard.ScorViewHolder(view);
                return  viewHolder;
            }
        };

        adapter.startListening();
        scorreflesh.setRefreshing(false);
        scorrecy.setAdapter(adapter);

    }