如何在我的firebase数据库中搜索数据[Android]

implementation 'com.google.firebase:firebase-database:20.0.0'

FirebaseDatabase database = FirebaseDatabase.getInstance();

Query query = database.getReference("users").orderByChild("name").equalTo("John");

query.addValueEventListener(new ValueEventListener() {
    @Override
    public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
        for (DataSnapshot snapshot : dataSnapshot.getChildren()) {
            // 处理查询到的数据
            User user = snapshot.getValue(User.class);
            // ...
        }
    }

    @Override
    public void onCancelled(@NonNull DatabaseError databaseError) {
        // 处理取消查询的情况
    }
});