HttpClient封装方法

时间:2023-03-09 00:27:28
HttpClient封装方法
//post请求
public static string PostRequest(string url, HttpContent data)
{
var handler = new HttpClientHandler() { UseCookies = false };
HttpClient client = new HttpClient(handler);
var message = new HttpRequestMessage(HttpMethod.Post, url);
message.Content = data;
//message.Headers.Authorization = new AuthenticationHeaderValue("Bearer", GetRemoteToken());
var response = client.SendAsync(message).Result;
response.EnsureSuccessStatusCode();
var result = response.Content.ReadAsStringAsync().Result;
return result;
} //发送文件
public static void SendFile(string url,string path = @"C:\<filepath>\test.txt")
{
using (var client = new HttpClient())
using (var content = new MultipartFormDataContent())
{
client.BaseAddress = new Uri("http://localhost"); var fileContent1 = new ByteArrayContent(File.ReadAllBytes(path));
fileContent1.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment")
{
FileName = Path.GetFileName(path)
};
content.Add(fileContent1); var result = client.PostAsync(url, content).Result;
}
}
    /// <summary>
/// Http请求帮助类
/// </summary>
public class HttpHelper
{
/// <summary>
/// 同步GET请求
/// </summary>
/// <param name="url"></param>
/// <param name="headers"></param>
/// <param name="timeout">请求响应超时时间,单位/s(默认100秒)</param>
/// <returns></returns>
public static string HttpGet(string url, Dictionary<string, string> headers = null, int timeout = 0)
{
using (HttpClient client = new HttpClient())
{
if (headers != null)
{
foreach (KeyValuePair<string, string> header in headers)
{
client.DefaultRequestHeaders.Add(header.Key, header.Value);
}
}
if (timeout > 0)
{
client.Timeout = new TimeSpan(0, 0, timeout);
}
Byte[] resultBytes = client.GetByteArrayAsync(url).Result;
return Encoding.UTF8.GetString(resultBytes);
}
}
/// <summary>
/// 异步GET请求
/// </summary>
/// <param name="url"></param>
/// <param name="headers"></param>
/// <param name="timeout">请求响应超时时间,单位/s(默认100秒)</param>
/// <returns></returns>
public static async Task<string> HttpGetAsync(string url, Dictionary<string, string> headers = null, int timeout = 0)
{
using (HttpClient client = new HttpClient())
{
if (headers != null)
{
foreach (KeyValuePair<string, string> header in headers)
{
client.DefaultRequestHeaders.Add(header.Key, header.Value);
}
}
if (timeout > 0)
{
client.Timeout = new TimeSpan(0, 0, timeout);
}
Byte[] resultBytes = await client.GetByteArrayAsync(url);
return Encoding.Default.GetString(resultBytes);
}
} /// <summary>
/// 同步POST请求
/// </summary>
/// <param name="url"></param>
/// <param name="postData"></param>
/// <param name="headers"></param>
/// <param name="contentType"></param>
/// <param name="timeout">请求响应超时时间,单位/s(默认100秒)</param>
/// <param name="encoding">默认UTF8</param>
/// <returns></returns>
public static string HttpPost(string url, string postData, Dictionary<string, string> headers = null, string contentType = null, int timeout = 0, Encoding encoding = null)
{
using (HttpClient client = new HttpClient())
{
client.DefaultRequestHeaders.Add("user-agent", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/36.0.1985.143 Safari/537.36");
if (headers != null)
{
foreach (KeyValuePair<string, string> header in headers)
{
client.DefaultRequestHeaders.Add(header.Key, header.Value);
}
}
if (timeout > 0)
{
client.Timeout = new TimeSpan(0, 0, timeout);
}
using (HttpContent content = new StringContent(postData ?? "", encoding ?? Encoding.UTF8))
{
if (contentType != null)
{
content.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue(contentType);
}
using (HttpResponseMessage responseMessage = client.PostAsync(url, content).Result)
{
Byte[] resultBytes = responseMessage.Content.ReadAsByteArrayAsync().Result;
return Encoding.UTF8.GetString(resultBytes);
}
}
}
} /// <summary>
/// 异步POST请求
/// </summary>
/// <param name="url"></param>
/// <param name="postData"></param>
/// <param name="headers"></param>
/// <param name="contentType"></param>
/// <param name="timeout">请求响应超时时间,单位/s(默认100秒)</param>
/// <param name="encoding">默认UTF8</param>
/// <returns></returns>
public static async Task<string> HttpPostAsync(string url, string postData, Dictionary<string, string> headers = null, string contentType = null, int timeout = 0, Encoding encoding = null)
{
using (HttpClient client = new HttpClient())
{
client.DefaultRequestHeaders.Add("user-agent", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/36.0.1985.143 Safari/537.36");
if (headers != null)
{
foreach (KeyValuePair<string, string> header in headers)
{
client.DefaultRequestHeaders.Add(header.Key, header.Value);
}
}
if (timeout > 0)
{
client.Timeout = new TimeSpan(0, 0, timeout);
}
using (HttpContent content = new StringContent(postData ?? "", encoding ?? Encoding.UTF8))
{
if (contentType != null)
{
content.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue(contentType);
}
using (HttpResponseMessage responseMessage = await client.PostAsync(url, content))
{
Byte[] resultBytes = await responseMessage.Content.ReadAsByteArrayAsync();
return Encoding.UTF8.GetString(resultBytes);
}
}
}
}
}

  

 
   //httpcontent类型
//json
HttpContent content1 = new StringContent("{a:1,b:2}", Encoding.UTF8, "application/json");
//from
HttpContent content2 = new FormUrlEncodedContent(new Dictionary<string, string>()
{
{"email", "1"},
{"pwd","11"}
});