我需要使用“HTTP Post”与WebClient Post一些数据到特定的URL我有。
现在,我知道这可以用WebRequest完成,但由于某些原因,我想使用WebClient代替。这可能吗?如果是这样,谁能给我举个例子或者给我指出正确的方向?
我需要使用“HTTP Post”与WebClient Post一些数据到特定的URL我有。
现在,我知道这可以用WebRequest完成,但由于某些原因,我想使用WebClient代替。这可能吗?如果是这样,谁能给我举个例子或者给我指出正确的方向?
当前回答
使用WebClient。UploadString或WebClient。UploadData可以轻松地将数据POST到服务器。我将展示一个使用UploadData的示例,因为UploadString的使用方式与DownloadString相同。
byte[] bret = client.UploadData("http://www.website.com/post.php", "POST",
System.Text.Encoding.ASCII.GetBytes("field1=value1&field2=value2") );
string sret = System.Text.Encoding.ASCII.GetString(bret);
更多:http://www.daveamenta.com/2008-05/c-webclient-usage/
其他回答
//Making a POST request using WebClient.
Function()
{
WebClient wc = new WebClient();
var URI = new Uri("http://your_uri_goes_here");
//If any encoding is needed.
wc.Headers["Content-Type"] = "application/x-www-form-urlencoded";
//Or any other encoding type.
//If any key needed
wc.Headers["KEY"] = "Your_Key_Goes_Here";
wc.UploadStringCompleted +=
new UploadStringCompletedEventHandler(wc_UploadStringCompleted);
wc.UploadStringAsync(URI,"POST","Data_To_Be_sent");
}
void wc__UploadStringCompleted(object sender, UploadStringCompletedEventArgs e)
{
try
{
MessageBox.Show(e.Result);
//e.result fetches you the response against your POST request.
}
catch(Exception exc)
{
MessageBox.Show(exc.ToString());
}
}
大多数答案都是旧的。只是想分享一下对我有用的方法。为了实现异步操作,例如在。net 6.0 Preview 7中使用WebClient异步发布数据到特定的URL, . net Core和其他版本都可以使用WebClient。UploadStringTaskAsync方法。
使用命名空间System.Net;对于ResponseType类来捕获来自服务器的响应,我们可以使用这个方法将数据POST到特定的URL。请确保在调用此方法时使用await关键字
public async Task<ResponseType> MyAsyncServiceCall()
{
try
{
var uri = new Uri("http://your_uri");
var body= "param1=value1¶m2=value2¶m3=value3";
using (var wc = new WebClient())
{
wc.Headers[HttpRequestHeader.Authorization] = "yourKey"; // Can be Bearer token, API Key etc.....
wc.Headers[HttpRequestHeader.ContentType] = "application/json"; // Is about the payload/content of the current request or response. Do not use it if the request doesn't have a payload/ body.
wc.Headers[HttpRequestHeader.Accept] = "application/json"; // Tells the server the kind of response the client will accept.
wc.Headers[HttpRequestHeader.UserAgent] = "PostmanRuntime/7.28.3";
string result = await wc.UploadStringTaskAsync(uri, body);
return JsonConvert.DeserializeObject<ResponseType>(result);
}
}
catch (Exception e)
{
throw new Exception(e.Message);
}
}
我刚刚找到了解决方案,是的,它比我想象的要简单:)
这就是解决方案:
string URI = "http://www.myurl.com/post.php";
string myParameters = "param1=value1¶m2=value2¶m3=value3";
using (WebClient wc = new WebClient())
{
wc.Headers[HttpRequestHeader.ContentType] = "application/x-www-form-urlencoded";
string HtmlResult = wc.UploadString(URI, myParameters);
}
它很有魅力:)
下面是简单明了的答案:
public String sendSMS(String phone, String token) {
WebClient webClient = WebClient.create(smsServiceUrl);
SMSRequest smsRequest = new SMSRequest();
smsRequest.setMessage(token);
smsRequest.setPhoneNo(phone);
smsRequest.setTokenId(smsServiceTokenId);
Mono<String> response = webClient.post()
.uri(smsServiceEndpoint)
.header(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE)
.body(Mono.just(smsRequest), SMSRequest.class)
.retrieve().bodyToMono(String.class);
String deliveryResponse = response.block();
if (deliveryResponse.equalsIgnoreCase("success")) {
return deliveryResponse;
}
return null;
}
使用webapiclient与模型发送序列化json参数请求。
PostModel.cs
public string Id { get; set; }
public string Name { get; set; }
public string Surname { get; set; }
public int Age { get; set; }
WebApiClient.cs
internal class WebApiClient : IDisposable
{
private bool _isDispose;
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
public void Dispose(bool disposing)
{
if (!_isDispose)
{
if (disposing)
{
}
}
_isDispose = true;
}
private void SetHeaderParameters(WebClient client)
{
client.Headers.Clear();
client.Headers.Add("Content-Type", "application/json");
client.Encoding = Encoding.UTF8;
}
public async Task<T> PostJsonWithModelAsync<T>(string address, string data,)
{
using (var client = new WebClient())
{
SetHeaderParameters(client);
string result = await client.UploadStringTaskAsync(address, data); // method:
//The HTTP method used to send the file to the resource. If null, the default is POST
return JsonConvert.DeserializeObject<T>(result);
}
}
}
业务调用方法
public async Task<ResultDTO> GetResultAsync(PostModel model)
{
try
{
using (var client = new WebApiClient())
{
var serializeModel= JsonConvert.SerializeObject(model);// using Newtonsoft.Json;
var response = await client.PostJsonWithModelAsync<ResultDTO>("http://www.website.com/api/create", serializeModel);
return response;
}
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}