C井 发送Post请求（带参数）

此处内容传输都是用UTF-8编码

1.不带参数发送Post请求

 /// 

 /// 指定Post地址使用Get 方式获取全部字符串
 /// 

 /// 请求后台地址
 /// 
 public static string Post(string url)
 {
 string result = "";
 HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
 req.Method = "POST";
 HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
 Stream stream = resp.GetResponseStream();
 //获取内容
 using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
 {
 result = reader.ReadToEnd();
 }
 return result;
 }

2.带参数Post请求,指定键值对

 /// 

 /// 指定Post地址使用Get 方式获取全部字符串
 /// 

 /// 请求后台地址
 /// 
 public static string Post(string url,Dictionary dic)
 {
 string result = "";
 HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
 req.Method = "POST";
 req.ContentType = "application/x-www-form-urlencoded";
 #region 添加Post 参数
 StringBuilder builder = new StringBuilder();
 int i = 0;
 foreach (var item in dic)
 {
 if (i > 0)
 builder.Append("&");
 builder.AppendFormat("{0}={1}", item.Key, item.Value);
 i++;
 }
 byte[] data = Encoding.UTF8.GetBytes(builder.ToString());
 req.ContentLength = data.Length;
 using (Stream reqStream = req.GetRequestStream())
 {
 reqStream.Write(data, 0, data.Length);
 reqStream.Close();
 }
 #endregion
 HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
 Stream stream = resp.GetResponseStream();
 //获取响应内容
 using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
 {
 result = reader.ReadToEnd();
 }
 return result;
 }

3.带参数的Post请求，指定发送字符串内容

/// 

/// 指定Post地址使用Get 方式获取全部字符串
/// 

/// 请求后台地址
/// Post提交数据内容(utf-8编码的)
/// 
public static string Post(string url, string content)
{
 string result = "";
 HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
 req.Method = "POST";
 req.ContentType = "application/x-www-form-urlencoded";
 
 #region 添加Post 参数
 byte[] data = Encoding.UTF8.GetBytes(content);
 req.ContentLength = data.Length;
 using (Stream reqStream = req.GetRequestStream())
 {
 reqStream.Write(data, 0, data.Length);
 reqStream.Close();
 }
 #endregion
 
 HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
 Stream stream = resp.GetResponseStream();
 //获取响应内容
 using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
 {
 result = reader.ReadToEnd();
 }
 return result;
}

 HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create("http://fanyi.baidu.com/transcontent");
 Encoding encoding = Encoding.UTF8;
 string param = "ie=utf-8&source=txt&query=hello&t=1327829764203&token=8a7dcbacb3ed72cad9f3fb079809a127&from=auto&to=auto";
 //encoding.GetBytes(postData);
 byte[] bs = Encoding.ASCII.GetBytes(param);
 string responseData = String.Empty; 
 req.Method = "POST";
 req.ContentType = "application/x-www-form-urlencoded";
 req.ContentLength = bs.Length;
 using (Stream reqStream = req.GetRequestStream())
 {
 reqStream.Write(bs, 0, bs.Length);
 reqStream.Close();
 }
 using (HttpWebResponse response = (HttpWebResponse)req.GetResponse())
 {
 using (StreamReader reader = new StreamReader(response.GetResponseStream(),encoding))
 {
 responseData = reader.ReadToEnd().ToString();
 }
 context.Response.Write(responseData);
 }

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關鍵字: 发送 HttpWebResponse 参数