public static StringBuilder HttpPost(string Url, byte[] Postdata, string i)
{
StringBuilder content = new StringBuilder();
try
{
WebClient wc = new WebClient();
wc.Headers.Add("Content-Type", "application/x-www-form-urlencoded"); byte[] bycontent = wc.UploadData(Url, "POST", Postdata);
string strcontent = System.Text.Encoding.UTF8.GetString(bycontent);
//strcontent=strcontent.Replace(""", "“");
content.Append(strcontent); }
catch (Exception ex)
{
throw new ServiceCustomException("HTTP请求失败！", ex);
}
return content;
}
第一种方式
使用：StringBuilder str = NetUtil.HttpPost(posturl, byte1, "1");
// StringBuilder sbd = NetUtil.Request(geturl, HttpMethod.GET);//此方式为Get实例
/// <summary>
/// 发出Http请求，并返回服务器的响应
/// </summary>
/// <param name="url">请求的网址</param>
/// <param name="dataToPost">post的数据</param>
/// <returns>服务器的响应</returns>
public static StringBuilder Request(string url, HttpMethod method, WebHeaderCollection headers = null, string accept = null,
string contentType = null, Encoding encoding = null, bool keepAlive = false,
int timeout = * , int readWriteTimeout = * , int writeCount = ,
CookieContainer cookieContainer = null, byte[] dataToPost = null)
{
StringBuilder result = new StringBuilder();
HttpWebRequest request = null;
HttpWebResponse response = null;
Stream responseStream = null;
StreamReader reader = null; try
{
request = (HttpWebRequest)WebRequest.Create(url);
request.Method = method.ToString(); if (headers != null)
request.Headers = headers; if (!string.IsNullOrEmpty(accept))
request.Accept = accept; if (!string.IsNullOrEmpty(contentType))
request.ContentType = contentType; request.KeepAlive = keepAlive; if (dataToPost != null && !dataToPost.Length.Equals())
{
request.ContentLength = dataToPost.Length;
} request.Timeout = timeout;
request.ReadWriteTimeout = readWriteTimeout; if (encoding == null)
encoding = Encoding.GetEncoding("utf-8"); if (method.Equals(HttpMethod.POST) && dataToPost != null && !dataToPost.Length.Equals())
{
using (Stream requestStream = request.GetRequestStream())
{
int index = ; while (index < dataToPost.Length)
{
if (dataToPost.Length - index <= writeCount)
{
requestStream.Write(dataToPost, index, dataToPost.Length - index);
index += dataToPost.Length - index;
break;
}
else
{
requestStream.Write(dataToPost, index, writeCount);
index += writeCount;
}
}
}
} if (cookieContainer == null)
request.CookieContainer = new CookieContainer();
else
request.CookieContainer = cookieContainer; response = (HttpWebResponse)request.GetResponse();
responseStream = response.GetResponseStream();
reader = new StreamReader(responseStream, encoding); string line = string.Empty; while ((line = reader.ReadLine()) != null)
{
result.Append(line);
} reader.Close();
}
catch (WebException ex)
{
throw ex;
}
catch (Exception ex)
{ }
finally
{
if (responseStream != null)
{
responseStream.Close();
responseStream = null;
}
if (reader != null)
{
reader.Close();
reader = null;
}
if (response != null)
{
response.Close();
response = null;
}
} return result;
}
第二种方式
使用： StringBuilder str = NetUtil.Request(posturl, HttpMethod.POST, null, null, "application/x-www-form-urlencoded", System.Text.Encoding.UTF8,
dataToPost: byte1);
/// <summary>
/// 提交数据请求 方法一
/// </summary>
/// <param name="POSTURL">请求提交的地址 如：http://xxx.xxx.xxx/interface/TestPostRequest</param>
/// <param name="PostData">提交的数据(字符串)</param>
/// <returns></returns>
public static string RequestData(string POSTURL, string PostData)
{
//发送请求的数据
WebRequest myHttpWebRequest = WebRequest.Create(POSTURL);
myHttpWebRequest.Method = "POST";
UTF8Encoding encoding = new UTF8Encoding();
byte[] byte1 = encoding.GetBytes(PostData);
myHttpWebRequest.ContentType = "application/x-www-form-urlencoded";
//myHttpWebRequest.ContentType = "application/json";
myHttpWebRequest.ContentLength = byte1.Length;
Stream newStream = myHttpWebRequest.GetRequestStream();
newStream.Write(byte1, , byte1.Length);
newStream.Close(); //发送成功后接收返回的XML信息
HttpWebResponse response = (HttpWebResponse)myHttpWebRequest.GetResponse();
string lcHtml = string.Empty;
Encoding enc = Encoding.GetEncoding("UTF-8");
Stream stream = response.GetResponseStream();
StreamReader streamReader = new StreamReader(stream, enc);
lcHtml = streamReader.ReadToEnd();
return lcHtml;
}
第三种方式
使用：NetUtil.RequestData(posturl, json);
public static string BuildQuery(IDictionary<string, string> parameters)
{
StringBuilder postData = new StringBuilder();
bool hasParam = false; IEnumerator<KeyValuePair<string, string>> dem = parameters.GetEnumerator();
while (dem.MoveNext())
{
string name = dem.Current.Key;
string value = dem.Current.Value;
// 忽略参数名或参数值为空的参数
if (!string.IsNullOrEmpty(name) && !string.IsNullOrEmpty(value))
{
if (hasParam)
{
postData.Append("&");
} postData.Append(name);
postData.Append("=");
//postData.Append(UrlEncode(value));
postData.Append(value);
hasParam = true;
}
} return postData.ToString();
}
对数据进行格式化
使用：
Dictionary<string, string> dic = new Dictionary<string, string>();
dic.Add("canshu", "dddddddd);
string str1 = NetUtil.BuildQuery(dic); //dic为要post的所有参数
byte[] byte1 = System.Text.Encoding.UTF8.GetBytes(str1);
//posturl为传递的url参数
第三种方式中json为：string json = "canshu=" + "dddddddd";