c# - 当我使用 .NET Core HttpClient 时,Google FCM 给了我 BadRequest
问题描述
我正在尝试使用 FCM API 在 android 应用程序上发送推送通知。如果我使用 Insomnia 或 Postman 之类的 HTTP 客户端,效果会很好。是下面的画面:
和标题:
当然,我有一个注册 ID 和 FCM 服务器密钥,而不是xxx
.
但我需要从我的C#
代码中发送相同的内容。我总是有BadRequest
。我不明白为什么。
这是我的代码:
var json = JsonConvert.SerializeObject(new
{
to = customer.FcmRegistrationId,
notification = new
{
body = push.PushBody,
title = push.PushTitle,
sound = "default"
}
});
var content = new StringContent(json, Encoding.UTF8, "application/json");
var request = new HttpRequestMessage
{
RequestUri = new Uri("https://fcm.googleapis.com/fcm/send"),
Content = content,
};
request.Headers.TryAddWithoutValidation("Authorization",
"key=" + customer.FCMServerKey);
HttpResponseMessage response;
using (var client = new HttpClient())
{
response = await client.SendAsync(request);
}
response.EnsureSuccessStatusCode();
var responseBody = await response.Content.ReadAsStringAsync();
我一直很伤心,因为我总是有这个答案:
请帮我!
解决方案
我有 testet 一种发送推送通知的方法:使用 WebRequest.Create
请从您的 fcm 帐户设置 devId(您在 fcm 注册设备上的 reg-id)、SERVER_API_KEY 和 SENDER_ID。
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
using System.Net;
namespace SendMsgByFCM
{
public partial class Form1 : Form
{
AndroidGCMPushNotification fcmPush = new AndroidGCMPushNotification();
public Form1()
{
InitForm();
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
**devId** = "faxgYiWv4Sk:APA91bGehlGNNGaE20djfaJ5xzQst_b190GvrEwm_yvPsZvY-.....";
fcmPush.SendNotification(devId, 'message ...' );
MessageBox.Show( "msg send" );
}
}
public class AndroidGCMPushNotification
{
public string SendNotification(string deviceId, string message)
{
string **SERVER_API_KEY** = "AAAADtSR7s8:APA91bHhhsjRMeL2gH6Qzv5BbdJyshOtgJ-J....";
var **SENDER_ID** = "636988888888";
var value = message;
WebRequest tRequest;
tRequest = **WebRequest.Create**("https://fcm.googleapis.com/fcm/send");
tRequest.Method = "post";
tRequest.ContentType = " application/x-www-form-urlencoded;charset=UTF-8";
tRequest.Headers.Add(string.Format("Authorization: key={0}", SERVER_API_KEY));
tRequest.Headers.Add(string.Format("Sender: id={0}", SENDER_ID));
string postData = "collapse_key=score_update&time_to_live=108&delay_while_idle=1&data.message=" + value + "&data.time=" + System.DateTime.Now.ToString() + "®istration_id=" + deviceId + "";
Console.WriteLine(postData);
Byte[] byteArray = Encoding.UTF8.GetBytes(postData);
tRequest.ContentLength = byteArray.Length;
Stream dataStream = tRequest.GetRequestStream();
dataStream.Write(byteArray, 0, byteArray.Length);
dataStream.Close();
WebResponse tResponse = tRequest.GetResponse();
dataStream = tResponse.GetResponseStream();
StreamReader tReader = new StreamReader(dataStream);
String sResponseFromServer = tReader.ReadToEnd();
tReader.Close();
dataStream.Close();
tResponse.Close();
return sResponseFromServer;
}
}
}
推荐阅读
- javascript - 为什么 document.body.style.backgroundImage 名称未显示在警报中?
- javascript - 如何从 ajax 调用中过滤空值或未定义值?
- ios - 滚动时如何使tableView单元格“粘”
- antlr4 - 使用二元运算符解析的不匹配输入
- python - 系统找不到python文件夹
- bash - Sublime 文本环境变量缓存
- django - 我可以在 Django 视图中破坏性地更改我的数据库吗?
- macos - 在 Mac 上安装 PANDAS,大问题
- npm - 如何更新 Npm 包?
- android - 为什么是“Fragment fragment = null”,这个片段定义的含义是什么?