此处内容传输都是用UTF-8编码
1、不带参数发送Post请求
/// <summary> /// 指定Post地址使用Get 方式获取全部字符串 /// </summary> /// <param name="url">请求后台地址</param> /// <returns></returns> 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
/// <summary> /// 指定Post地址使用Get 方式获取全部字符串 /// </summary> /// <param name="url">请求后台地址</param> /// <returns></returns> public static string Post(string url,Dictionary<string,string> 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
/// <summary> /// 指定Post地址使用Get 方式获取全部字符串 /// </summary> /// <param name="url">请求后台地址</param> /// <param name="content">Post提交数据内容(utf-8编码的)</param> /// <returns></returns> 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; }
转载方法：
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); }