public string Post(string methodName, string jsonParas) { string strURL = Url + "/" + methodName; //创建一个HTTP请求 HttpWebRequest request = (HttpWebRequest)WebRequest.Create(strURL); //Post请求方式 request.Method = "POST"; //内容类型 request.ContentType = "application/x-www-form-urlencoded"; //设置参数,并进行URL编码 //虽然我们需要传递给服务器端的实际参数是JsonParas(格式:[{\"UserID\":\"0206001\",\"UserName\":\"ceshi\"}]), //但是需要将该字符串参数构造成键值对的形式(注:"paramaters=[{\"UserID\":\"0206001\",\"UserName\":\"ceshi\"}]"), //其中键paramaters为WebService接口函数的参数名,值为经过序列化的Json数据字符串 //最后将字符串参数进行Url编码 string paraUrlCoded = System.Web.HttpUtility.UrlEncode("paramaters"); paraUrlCoded += "=" + System.Web.HttpUtility.UrlEncode(jsonParas); byte[] payload; //将Json字符串转化为字节 payload = System.Text.Encoding.UTF8.GetBytes(paraUrlCoded); //设置请求的ContentLength request.ContentLength = payload.Length; //发送请求,获得请求流 Stream writer; try { writer = request.GetRequestStream();//获取用于写入请求数据的Stream对象 } catch (Exception) { writer = null; Console.Write("连接服务器失败!"); } //将请求参数写入流 writer.Write(payload, 0, payload.Length); writer.Close();//关闭请求流 String strValue = "";//strValue为http响应所返回的字符流 HttpWebResponse response; try { //获得响应流 response = (HttpWebResponse)request.GetResponse(); } catch (WebException ex) { response = ex.Response as HttpWebResponse; } Stream s = response.GetResponseStream(); //服务器端返回的是一个XML格式的字符串,XML的Content才是我们所需要的Json数据 XmlTextReader Reader = new XmlTextReader(s); Reader.MoveToContent(); strValue = Reader.ReadInnerXml();//取出Content中的Json数据 Reader.Close(); s.Close(); return strValue;//返回Json数据 }
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