c# http请求不同参数传输(HttpClient应用)

原创已于 2023-12-18 16:23:14 修改 · 1.3k 阅读

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#c# #http

于 2023-12-15 16:23:18 首次发布

PostMan请求1如图:

c# HttpClient请求（带有超时功能）代码：

//方法
public async static Task<string> PostResponse(string url, string postData, string param)
{

     HttpClient httpClient = new HttpClient();
     var request = new MultipartFormDataContent();

     request.Add(new StringContent(postData), param);
     var task = httpClient.PostAsync(url, request);
    
     if (task == await Task.WhenAny(task, Task.Delay(1000)))
     {
        if (task.Result.IsSuccessStatusCode)
        {
            var responseContent = await task.Result.Content.ReadAsStringAsync();

            return responseContent.ToString();
        }else
        {
             return null;
        }
      
     }else
     {
        return "";//"超时";
     }
}
//调用方法  注意HttpClientUtil为类，PostResponse为类中的方法
var tasks = await HttpClientUtil.PostResponse("http://10.10.14.5:8082/check/Add", "{"参数1":"数据1","参数2”:"数据2"}", "param");

PostMan请求2如图:

c# HttpClient请求（带有超时功能）代码

//方法
public async static Task<string> PostUpdataResponse(string url, string postData)
{
   HttpClient httpClient = new HttpClient();
   HttpContent httpContent = new StringContent(postData);
   httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");

   var task = httpClient.PostAsync(url, httpContent);
   if (task == await Task.WhenAny(task, Task.Delay(1000)))
   {
       if (task.Result.IsSuccessStatusCode)
       {
           var responseContent = await task.Result.Content.ReadAsStringAsync();
           return responseContent.ToString();
       }else
       {
           return null;    
       }
   
   }else
   {
       return "";//"超时";     
   }
}

//调用方法  注意HttpClientUtil为类，PostUpdataResponse为类中的方法
var tasks = await HttpClientUtil.PostUpdataResponse("http://10.10.14.5:8082/check/Add", "{
    "参数1":"数据1",
    "参数2":"数据2"
}");

PostMan请求3如图:

c# HttpClient请求（带有超时功能）代码

//方法
//注意：此处调用的是SendAsync因为delete是不允许这样传输参数的
public async static Task<string> DeleteResponse(string url, string postData, string param)
{
   HttpClient httpClient = new HttpClient();


   var request = new HttpRequestMessage
   {
       Method = HttpMethod.Delete,
       RequestUri = new Uri(url),
       Content = new FormUrlEncodedContent(new Dictionary<string, string> 
       {
          { param, postData },
       })
   };

   var task = httpClient.SendAsync(request);
   if (task == await Task.WhenAny(task, Task.Delay(1000)))
   {
       if (task.Result.IsSuccessStatusCode)
       {
           var responseContent = await task.Result.Content.ReadAsStringAsync();

            return responseContent.ToString();

        }
        else
        {
           return null;
        }
   }else
   {
        return "";//"超时";
   }

}

//调用方法  注意HttpClientUtil为类，DeleteResponse为类中的方法
var tasks = await HttpClientUtil.DeleteResponse("http://10.10.14.5:8082/check/deleteBatch", "1735175865043521536", "ids");

PostMan请求4 带图片上传如图:

c# HttpClient请求（带有超时功能）代码

//方法
public async static Task<string> PostFile(string url, string postData, string path,string file, string fileparam,string param)
{
    HttpClient httpClient = new HttpClient();
    var request = new MultipartFormDataContent();

    var fileContent = new ByteArrayContent(System.IO.File.ReadAllBytes(path));
    fileContent.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/octet-stream");
    request.Add(fileContent, file, fileparam);
    request.Add(new StringContent(postData), param);
    var task = httpClient.PostAsync(url, request);

    if (task == await Task.WhenAny(task, Task.Delay(1000)))
    {

    }else
    {
           return "";//超时
    }

}

//方法调用  注意HttpClientUtil为类
var tasks = await HttpClientUtil.PostFile("http://10.10.14.5:8082/check/qmBaseCar/addCarPhoto", "[{“参数1”:"数据1","参数2":"数据2"}]", @"D:/image/car/LeftView.png", "file", "LeftView", "param");