Firebase REST API Java（不是 android）。我得到 HTML 文本而不是我的数据库值

Question

我正在使用 Firebase 制作我的新 REST API Java 项目。我运行我的代码在这里：

URL url = new URL("https://restapi-example-java-default-rtdb.asia-southeast1.firebasedatabase.app/get");
HttpURLConnection conn = (HttpURLConnection)url.openConnection();

conn.setRequestMethod("GET");
conn.setRequestProperty("Content-Type","application/json");
conn.setRequestProperty("Accept","application/json");
conn.setConnectTimeout(5000);
conn.setDoInput(true);

conn.connect();
System.out.println(conn.getResponseMessage());
int responseCode = conn.getResponseCode();
System.out.println(responseCode);

BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));
while ((inputLine = in.readLine()) != null) {
    outResult.append(inputLine);
}

System.out.println(outResult);

但是，我能得到的是某种 html，大约是 Google 登录。响应消息和连接代码正常，200；

我的 firebase 规则：

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

Answer 1

要从实时数据库的 REST API 读取，URL 必须以 .json 结尾。所以：

new URL("https://restapi-example-java-default-rtdb.asia-southeast1.firebasedatabase.app/get.json");
                                                                                          //

另请参阅 getting started with the REST API 上的 Firebase 文档：

We can use any Firebase Realtime Database URL as a REST endpoint. All we need to do is append .json to the end of the URL and send a request from our favorite HTTPS client.

Firebase REST API Java（不是 android）。我得到 HTML 文本而不是我的数据库值

Firebase REST API Java(Not android). I got HTML Texts instead of my database value

java

rest

firebase

firebase-realtime-database