Firestore使用POST请求和HttpsURLConnection将字段添加到文档

即使在玩了谷歌的API浏览器好几个小时后,我还是想不出来。我想使用文档路径提供的HTTPS请求添加单个字段。

我的补丁函数示例(此函数有效)

private void PATCHRequest(String document_path, String theData) throws IOException, JSONException {

    // Build URL
    String FirestoreURL = REST_HEADER + "projects/" + PROJECT_ID + "/databases/(default)/documents/" + document_path;

    // Create URL
    URL cloudFirestoreEndPoint = new URL(FirestoreURL);

    // Create connection
    myHttpsConnection = (HttpsURLConnection) cloudFirestoreEndPoint.openConnection();

    // Set Writable
    myHttpsConnection.setDoOutput(true);

    // Set Request Method
    myHttpsConnection.setRequestMethod("PATCH");

    // Set Https Connection properties
    myHttpsConnection.setRequestProperty("Content-Type", "application/json");

    // Generate JSON from the data
    JSONObject myJSON = getJSONfromString(theData);

    if(myJSON != null){

        // Create output stream linked to our https connection
        OutputStreamWriter streamWriter = new OutputStreamWriter(myHttpsConnection.getOutputStream());

        // Write to buffer
        streamWriter.write(myJSON.toString());

        // Send out the buffer
        streamWriter.flush();

        // Close the stream
        streamWriter.close();
    }
}

其他示例my DELETE函数,

private void DELETERequest(String document_path) throws IOException {

    // Build URL
    String FirestoreURL = REST_HEADER + "projects/" + PROJECT_ID + "/databases/(default)/documents/" + document_path;

    // Create URL
    URL cloudFirestoreEndPoint = new URL(FirestoreURL);

    // Create connection
    myHttpsConnection = (HttpsURLConnection) cloudFirestoreEndPoint.openConnection();

    // Set Writable
    myHttpsConnection.setDoOutput(true);

    // Set Request Method
    myHttpsConnection.setRequestMethod("DELETE");

    // Send the command
    myHttpsConnection.connect();

    // Result
    myResult_ = "deleted";
}

基于这种格式,是否有人知道如何使用值添加单个字段?