为什么我的JSON.parse失败了？(Why is my JSON.parse failing? Ruby on Rails)

 为了以最简单的方式获取数据，我使用此代码重新命令： 
 
DatabaseReference rootRef = FirebaseDatabase.getInstance().getReference();
DatabaseReference blogRef = rootRef.child("Blog");
ValueEventListener eventListener = new ValueEventListener() {
    @Override
    public void onDataChange(DataSnapshot dataSnapshot) {
        for(DataSnapshot ds : dataSnapshot.getChildren()) {
            String desc = ds.child("desc").getValue(String.class);
            String title = ds.child("title").getValue(String.class);
            String image = ds.child("image").child("path").getValue(String.class);
            Log.d("TAG", desc + " / " + title + " / " + image);
        }
    }

    @Override
    public void onCancelled(DatabaseError databaseError) {}
};
blogRef.addListenerForSingleValueEvent(eventListener);
 
 你的输出将是： 
 
tst / test / /v0/b/infectionui...
 
 正如你所见，我已经使用了String类。 这也是您需要在FirebaseRecyclerAdapter 。 
 
 如果你想从图像获得antoher值，只需将.child("path")改为另一个孩子，让我们说.child("schemeSpecificPart") 。 

To get that data in the simplest way, i recomand you using this code:
 
DatabaseReference rootRef = FirebaseDatabase.getInstance().getReference();
DatabaseReference blogRef = rootRef.child("Blog");
ValueEventListener eventListener = new ValueEventListener() {
    @Override
    public void onDataChange(DataSnapshot dataSnapshot) {
        for(DataSnapshot ds : dataSnapshot.getChildren()) {
            String desc = ds.child("desc").getValue(String.class);
            String title = ds.child("title").getValue(String.class);
            String image = ds.child("image").child("path").getValue(String.class);
            Log.d("TAG", desc + " / " + title + " / " + image);
        }
    }

    @Override
    public void onCancelled(DatabaseError databaseError) {}
};
blogRef.addListenerForSingleValueEvent(eventListener);
 
Your output will be:
 
tst / test / /v0/b/infectionui...
 
As you see, i have used String class. This is what you need to use also in your FirebaseRecyclerAdapter.
 
If you want to get antoher value from image, just change .child("path") with another child, let's say .child("schemeSpecificPart").