Firestore whereEqualTo only单个数据

// 获取Firestore实例
Firestore db = FirestoreClient.getFirestore();

// 创建查询
CollectionReference usersRef = db.collection("users");
Query query = usersRef.whereEqualTo("age", 25);

// 执行查询
ApiFuture<QuerySnapshot> querySnapshot = query.get();

// 处理查询结果
try {
    for (DocumentSnapshot document : querySnapshot.get().getDocuments()) {
        System.out.println("用户ID: " + document.getId());
        System.out.println("姓名: " + document.getString("name"));
        System.out.println("年龄: " + document.getLong("age"));
    }
} catch (InterruptedException | ExecutionException e) {
    e.printStackTrace();
}