获取Firebase中的子项名称

import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;

public class FirebaseExample {
    public static void main(String[] args) {
        // 连接到Firebase项目
        FirebaseDatabase database = FirebaseDatabase.getInstance();
        DatabaseReference ref = database.getReference("your_node_path");

        // 添加值事件监听器
        ref.addListenerForSingleValueEvent(new ValueEventListener() {
            @Override
            public void onDataChange(DataSnapshot dataSnapshot) {
                // 遍历子项并获取子项名称
                for (DataSnapshot childSnapshot : dataSnapshot.getChildren()) {
                    String childName = childSnapshot.getKey();
                    System.out.println("子项名称：" + childName);
                }
            }

            @Override
            public void onCancelled(DatabaseError databaseError) {
                System.out.println("读取数据失败：" + databaseError.getMessage());
            }
        });
    }
}