Asp.Net 发请求

1：HttpGet方式

        /// <summary>
        /// 后台模拟HTTP Get方式请求(标准模式)
        /// </summary>
        /// <param name="requestURL">请求地址</param>
        /// <returns></returns>
        public static String request_Get(String requestURL)
        {
            //读取返回消息  
            string result = "";
            //创建请求  
            var request = (HttpWebRequest)HttpWebRequest.Create(requestURL);
            request.Method = "GET";
            //设置上传服务的数据格式  
            request.ContentType = "application/x-www-form-urlencoded";
            //请求的身份验证信息为默认  
            request.Credentials = CredentialCache.DefaultCredentials;
            //请求超时时间  
            request.Timeout = 10000;
            var response = (HttpWebResponse)request.GetResponse();
            var reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
            result = reader.ReadToEnd();
            reader.Close();
            return result;
        }

2：HttpPost方式

        /// <summary>
        /// 后台模拟HTTP Post方式请求(标准模式)
        /// </summary>
        /// <param name="requestURL"> 请求地址</param>
        /// <param name="requestPost"> 请求post内容（json） </param>
        /// <returns></returns>
        public static String request_Post(String requestURL, String requestPost)
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(requestURL);
            request.Method = "POST";
            request.ContentType = "multipart/form-data";
            request.ContentLength = requestPost.Length;
            StreamWriter writer = new StreamWriter(request.GetRequestStream(), Encoding.ASCII);
            writer.Write(requestPost);
            writer.Flush();
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            string encoding = response.ContentEncoding;
            if (encoding == null || encoding.Length < 1)
            { 
                encoding = "UTF-8"; //默认编码  
            }
            StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.GetEncoding(encoding));
            string retString = reader.ReadToEnd();
            return retString;  
        }