/// <summary>
///
/// </summary>
/// <param name="url"></param>
/// <param name="param"></param>
/// <param name="method">GET;POST</param>
/// <returns></returns>
private static HttpWebRequest GetRequest(string url, HttpRequestParam param, string method)
{
HttpWebRequest request;
if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
{
ServicePointManager.ServerCertificateValidationCallback = (sender, certificate, chain, errors) => true;
request = WebRequest.Create(url) as HttpWebRequest;
if (request != null)
{
request.ProtocolVersion = HttpVersion.Version10;
}
}
else
{
request = WebRequest.Create(url) as HttpWebRequest;
}
if (request == null)
{
throw new Exception("创建HttpWebRequest失败");
}
request.CookieContainer = param.CookieContainer;
request.Timeout = param.Timeout;
request.ContinueTimeout = -1;
request.ReadWriteTimeout = -1;
request.Method = method;
request.Headers.Add("Accept-Encoding", "gzip, deflate");
request.Headers.Add("Accept-Language", "zh-CN,zh;q=0.9");
request.UserAgent = param.UserAgent;
request.Accept = param.Accept;
return(request);
}
/// <summary>
/// Get请求
/// </summary>
/// <param name="url">网址</param>
/// <param name="param"></param>
/// <returns></returns>
public static HttpResponseResult GetData(string url, HttpRequestParam param = null)
{
if (param == null)
{
param = new HttpRequestParam();
}
if (!param.DownloadTimeout.HasValue)
{
return(GetDataNext(url, param, null));
}
var cts = new CancellationTokenSource();
var task = Task.Run(() => GetDataNext(url, param, cts), cts.Token).SetTimeoutResult(param.DownloadTimeout.Value);
Task.WaitAll(task);
//没有超时
if (!task.Result.IsTimeout)
{
return(task.Result.Value);
}
//超时
cts.Cancel();
return(ReturnTimeout());
}
/// <summary>
/// Post请求
/// </summary>
/// <param name="url"></param>
/// <param name="files"></param>
/// <param name="dict"></param>
/// <param name="param"></param>
/// <returns></returns>
private static HttpResponseResult PostData(string url, List <HttpRequestFileModel> files, Dictionary <string, string> dict, HttpRequestParam param)
{
if (param == null)
{
param = new HttpRequestParam();
}
if (!param.DownloadTimeout.HasValue)
{
return(PostDataNext(url, files, dict, param, null));
}
var cts = new CancellationTokenSource();
var task = Task.Run(() => PostDataNext(url, files, dict, param, cts), cts.Token).SetTimeoutResult(param.DownloadTimeout.Value);
Task.WaitAll(task);
//没有超时
if (!task.Result.IsTimeout)
{
return(task.Result.Value);
}
//超时
cts.Cancel();
return(ReturnTimeout());
}
/// <summary>
///
/// </summary>
/// <param name="url"></param>
/// <param name="param"></param>
/// <param name="cts"></param>
/// <returns></returns>
private static HttpResponseResult GetDataNext(string url, HttpRequestParam param, CancellationTokenSource cts)
{
//HttpWebRequest
var request = GetRequest(url, param, "GET");
var result = GetResponse(request);
request.Abort();
return(result);
}
/// <summary>
///
/// </summary>
/// <param name="url"></param>
/// <param name="data"></param>
/// <param name="param"></param>
/// <param name="contentType"></param>
/// <param name="cts"></param>
/// <returns></returns>
private static HttpResponseResult PostDataNext(string url, string data, HttpRequestParam param, string contentType, CancellationTokenSource cts)
{
//HttpWebRequest
var request = GetRequest(url, param, "POST");
request.ContentType = contentType;
using (var streamWriter = new StreamWriter(request.GetRequestStream()))
{
streamWriter.Write(data);
streamWriter.Flush();
}
var result = GetResponse(request);
request.Abort();
return(result);
}
/// <summary>
/// PostJson请求
/// </summary>
/// <param name="url">网址</param>
/// <param name="jsonString"></param>
/// <param name="param"></param>
/// <returns></returns>
public static HttpResponseResult PostJson(string url, string jsonString, HttpRequestParam param = null)
{
return(PostData(url, jsonString, param, "application/json"));
}
/// <summary>
/// PostPayload请求
/// </summary>
/// <param name="url">网址</param>
/// <param name="payload"></param>
/// <param name="param"></param>
/// <returns></returns>
public static HttpResponseResult PostPayload(string url, string payload, HttpRequestParam param = null)
{
return(PostData(url, payload, param, "text/plain"));
}
/// <summary>
/// PostFile请求
/// </summary>
/// <param name="url">网址</param>
/// <param name="files"></param>
/// <param name="dict"></param>
/// <param name="param"></param>
/// <param name="cts"></param>
/// <returns></returns>
private static HttpResponseResult PostDataNext(string url, List <HttpRequestFileModel> files, Dictionary <string, string> dict, HttpRequestParam param, CancellationTokenSource cts)
{
var request = GetRequest(url, param, "POST");
var boundary = $"----{Guid.NewGuid():N}";
request.ContentType = $"multipart/form-data; boundary={boundary}";
var b1 = dict != null && dict.Count > 0;
var b2 = files != null && files.Count > 0;
if (b1 || b2)
{
using (var requestStream = request.GetRequestStream())
{
//添加字段
if (b1)
{
var sb = new StringBuilder();
foreach (var d in dict)
{
sb.AppendLine($"--{boundary}");
sb.AppendLine($"Content-Disposition: form-data; name=\"{d.Key}\"\r\n");
sb.AppendLine(d.Value);
}
var bt = Encoding.UTF8.GetBytes(sb.ToString());
requestStream.Write(bt, 0, bt.Length);
}
//添加文件
if (b2)
{
foreach (var file in files)
{
var sb1 = new StringBuilder();
sb1.AppendLine($"--{boundary}");
sb1.AppendLine($"Content-Disposition: form-data; name=\"{file.Name}\"; filename=\"{file.Filename}\"");
sb1.AppendLine($"Content-Type: {file.ContentType}\r\n");
var bt1 = Encoding.UTF8.GetBytes(sb1.ToString());
requestStream.Write(bt1, 0, bt1.Length);
file.Stream.CopyTo(requestStream);
var bt2 = Encoding.UTF8.GetBytes("\r\n");
requestStream.Write(bt2, 0, bt2.Length);
}
}
var bt3 = Encoding.UTF8.GetBytes($"--{boundary}--");
requestStream.Write(bt3, 0, bt3.Length);
}
}
var result = GetResponse(request);
request.Abort();
return(result);
}
/// <summary>
/// PostFormFile请求
/// </summary>
/// <param name="url"></param>
/// <param name="file"></param>
/// <param name="dict"></param>
/// <param name="param"></param>
/// <returns></returns>
public static HttpResponseResult PostFormFile(string url, HttpRequestFileModel file, Dictionary <string, string> dict, HttpRequestParam param = null)
{
return(PostData(url, new List <HttpRequestFileModel>()
{
file
}, dict, param));
}
/// <summary>
/// PostFormFile请求
/// </summary>
/// <param name="url"></param>
/// <param name="files"></param>
/// <param name="param"></param>
/// <returns></returns>
public static HttpResponseResult PostFormFile(string url, List <HttpRequestFileModel> files, HttpRequestParam param = null)
{
return(PostData(url, files, null, param));
}
/// <summary>
/// PostFrom请求
/// </summary>
/// <param name="url">网址</param>
/// <param name="dict"></param>
/// <param name="param"></param>
/// <returns></returns>
public static HttpResponseResult PostForm(string url, Dictionary <string, string> dict, HttpRequestParam param = null)
{
var sb = new StringBuilder();
foreach (var item in dict)
{
if (sb.Length > 0)
{
sb.Append("&");
}
sb.Append($"{item.Key}={HttpUtility.UrlEncode(item.Value)}");
}
return(PostData(url, sb.ToString(), param, "application/x-www-form-urlencoded"));
}