/// <summary>
/// 创建POST方式的HTTP请求
/// </summary>
/// <param name="url">请求的URL</param>
/// <param name="parameters">随同请求POST的参数名称及参数值字典</param>
public static void CreatePostHttpResponse(string url, IDictionary<string, string> parameters, callbackResult callback)
{
//判断url不为空
if (string.IsNullOrEmpty(url))
{
throw new ArgumentNullException("url");
}
//创建请求
HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
//请求类型
request.Method = "POST";
//http 标头
request.ContentType = "application/x-www-form-urlencoded";
request.UserAgent = DefaultUserAgent;
//参数
if (!(parameters == null || parameters.Count == 0))
{
StringBuilder buffer = new StringBuilder();
int i = 0;
foreach (string key in parameters.Keys)
{
//if (i > 0)
if (url.IndexOf("?") > -1)
{
buffer.AppendFormat("&{0}={1}", key, parameters[key]);
}
else
{
buffer.AppendFormat("?{0}={1}", key, parameters[key]);
}
i++;
}
byte[] data = Encoding.UTF8.GetBytes(buffer.ToString());
//开始请求
request.BeginGetRequestStream(new AsyncCallback((ia) =>
{
HttpWebRequest httpWebRequest = (HttpWebRequest)ia.AsyncState;
using (Stream stream = httpWebRequest.EndGetRequestStream(ia))
{
stream.Write(data, 0, data.Length);
}
request.BeginGetResponse((x) => {
HttpWebRequest req = x.AsyncState as HttpWebRequest;
string responseStr = string.Empty;
try
{
// 获取请求
using (HttpWebResponse response = (HttpWebResponse)req.EndGetResponse(x))
{
// Get the response stream
StreamReader reader = new StreamReader(response.GetResponseStream());
responseStr = reader.ReadToEnd();
}
callback(responseStr);
}
catch (Exception)
{
throw;
}
}, request);
}), request);
}
else
{
request.BeginGetResponse((ia) =>
{
HttpWebRequest req = ia.AsyncState as HttpWebRequest;
string responseStr = string.Empty;
// 获取请求
using (HttpWebResponse response = (HttpWebResponse)req.EndGetResponse(ia))
{
// Get the response stream
StreamReader reader = new StreamReader(response.GetResponseStream());
responseStr = reader.ReadToEnd();
}
callback(responseStr);
}, request);
}
}
/// <summary>
/// get请求
/// </summary>
/// <param name="url">url</param>
/// <param name="parameters">参数</param>
/// <param name="callback">会调</param>
public static void CreateGetHttpResponse(string url, IDictionary<string, string> parameters, callbackResult callback)
{
if (string.IsNullOrEmpty(url))
{
throw new ArgumentNullException("url");
}
if (!(parameters == null || parameters.Count == 0))
{
StringBuilder buffer = new StringBuilder();
int i = 0;
foreach (string key in parameters.Keys)
{
if (url.IndexOf("?")>-1)
{
buffer.AppendFormat("&{0}={1}", key, parameters[key]);
}
else
{
buffer.AppendFormat("{0}={1}", key, parameters[key]);
}
i++;
}
url += buffer.ToString();
}
HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
request.BeginGetResponse((ia) =>
{
string response = null;
Stream stream = null;
try
{
//获取异步操作返回的的信息
HttpWebRequest httpWebRequest = (HttpWebRequest)ia.AsyncState;
//结束对 Internet 资源的异步请求
WebResponse webResponse = httpWebRequest.EndGetResponse(ia);
stream = webResponse.GetResponseStream();
using (StreamReader sr = new StreamReader(stream))
{
response = sr.ReadToEnd();
}
callback(response);
}
catch (Exception)
{
}
finally
{
if (stream != null)
{
stream.Close();
}
}
}, request);
}
