HttpClient postasync，带有自定义标头和应用程序/json，用于正文 C#

Posted 2023-03-31

【中文标题】HttpClient postasync，带有自定义标头和应用程序/json，用于正文 C#

【英文标题】：HttpClient postasync with custom header and application/json for body C#

【发布时间】：2018-11-22 11:51:21

【问题描述】：

您好，我想从其api 运行推送应用中心。但我不知道如何制作正确的格式。

我想通过这个 api postasync：https://appcenter.ms/api/v0.1/apps/KacangIjo/ShopDiaryApp/push/notifications

Headers 需要的是： X-API-Token="api token" 和 Content Type="application/json"

对于正文（内容），我想说：

    "notification_content" : 
        "name" : "Campaign Name",
        "title" : "Expired Warning",
        "body" : "You have items that almost expired"
    

我很难为 HttpClient 编写正确的格式。 我试过了，没有工作..

Content = new Content

   Name = "Campaign Name",
   Title = "Expired Warning",
   Body = "You have items that almost expired"
;
using (var client = new HttpClient  Timeout = TimeSpan.FromSeconds(30) )

   var myContent = JsonConvert.SerializeObject(data);
   client.DefaultRequestHeaders.Add("X-API-Token", "my api token");
   client.DefaultRequestHeaders.Accept.Add(new 
   MediaTypeWithQualityHeaderValue("application/json"));
   var builder = new UriBuilder(new Uri("https://appcenter.ms/api/v0.1/apps/KacangIjo/ShopDiaryApp/push/notifications"));
   HttpResponseMessage response = await client.PostAsync(builder.Uri, content);
;

但我知道这段代码：

 
        "notification_content" : 
            "name" : "Campaign Name",
            "title" : "Expired Warning",
            "body" : "You have items that almost expired"
        
    

与此不一样转换为json格式：

Content = new Content

    Name = "Campaign Name",
    Title = "Expired Warning",
    Body = "You have items that almost expired"
;

可以帮助我正确的序列化 Json 格式吗？以及 httpclient 标头和正文的正确格式？ 我已经找到了很多样品，但仍然不知道我想要的那个。 非常感谢你们的帮助:)

【问题讨论】：

网上有很多文章，例如stevejgordon.co.uk/…

【参考方案1】：

您需要按照您所需的JSON 来构造您的对象。

创建如下类。

public class NotificationContent

    [JsonProperty("name")]
    public string Name  get; set; 

    [JsonProperty("title")]
    public string Title  get; set; 

    [JsonProperty("body")]
    public string Body  get; set; 


public class PostObject

    [JsonProperty("notification_content")]
    public NotificationContent NotificationContent  get; set; 

上面是正确的结构，现在当你调用JsonConvert.SerializeObject时，你的json会是

 
    "notification_content" : 
        "name" : "Campaign Name",
        "title" : "Expired Warning",
        "body" : "You have items that almost expired"
    
 

下面是http调用的代码

using (var client = new HttpClient  Timeout = TimeSpan.FromSeconds(30) )
    
        PostObject postObject = new PostObject
        
            NotificationContent = new NotificationContent
            
                Name = "Campaign Name",
                Title = "Expired Warning",
                Body = "You have items that almost expired"
            
        ;

        var myContent = JsonConvert.SerializeObject(postObject);
        client.DefaultRequestHeaders.Add("X-API-Token", "my api token");
        client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

        var builder = new UriBuilder(new Uri("https://appcenter.ms/api/v0.1/apps/KacangIjo/ShopDiaryApp/push/notifications"));

        HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Post, builder.Uri);
        request.Content = new StringContent(myContent, Encoding.UTF8, "application/json");//CONTENT-TYPE header

        HttpResponseMessage response = await client.SendAsync(request);
    ;

【讨论】：

非常感谢先生 :) 这个真的有效。我连续工作了 3 天。谢谢