.NET接入接口/请求服务器

之前只调用过自己写的接口，这个是调用外部接口

一.创建方法链接接口

  public static string HttpWebRequest(string url, string data, Encoding encode, string contentType = "application/x-www-form-urlencoded", CookieContainer cookieContainer = null, string UserAgent = null, WebProxy proxy = null, int timeOut = , string method = "Get", string token = null)
          {
             if (string.IsNullOrEmpty(url)) { return string.Empty; }
             string result = string.Empty;
             System.Net.HttpWebRequest webRequest = System.Net.WebRequest.Create(url) as System.Net.HttpWebRequest;//创建HttpWebRequest
             try
             {
                 webRequest.Method = method;//传输方式Get/Post
                 webRequest.Timeout = timeOut;/获取或设置 GetResponse 和 GetRequestStream 方法的超时值（以毫秒为单位）。
                 webRequest.ContentType = contentType;//内容类型
                 webRequest.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8";//获取或设置 Accept HTTP 标头的值。
                 webRequest.KeepAlive = true;
                 webRequest.UserAgent = UserAgent;

                 //******************
                 //添加头，一般用于接口方验证
                 webRequest.Headers.Add("UserName", "TingZi Unique");
                 //******************

                 webRequest.ContentLength = ; //内容长度
                 if (!string.IsNullOrWhiteSpace(token))
                     webRequest.Headers.Add("X-Api-Auth", token);
                 if (proxy != null)
                     webRequest.Proxy = proxy;
                 if (cookieContainer != null)
                 {
                     webRequest.CookieContainer = cookieContainer;
                 }
                 if (!string.IsNullOrEmpty(data))
                 {
                     byte[] buffer = encode.GetBytes(data); // 转化
                     webRequest.ContentLength = buffer.Length;
                     //写入提交数据
                     using (System.IO.Stream newStream = webRequest.GetRequestStream())
                     {
                         newStream.Write(buffer, , buffer.Length); //写入参数
                         newStream.Flush();
                     }
                 }

                 //提交请求
                 using (System.Net.HttpWebResponse response = (System.Net.HttpWebResponse)webRequest.GetResponse())
                 {
                     if (cookieContainer != null)
                     {
                         response.Cookies = cookieContainer.GetCookies(response.ResponseUri);
                     }
                     //判断是否返回的是压缩信息
                     if (response.ContentEncoding.ToLower().Contains("gzip"))
                     {
                         using (GZipStream stream = new GZipStream(response.GetResponseStream(), CompressionMode.Decompress))
                         {
                             using (StreamReader sreader = new StreamReader(stream))
                             {
                                 result = sreader.ReadToEnd();
                             }
                         }
                     }
                     else
                     {
                         using (Stream stream = response.GetResponseStream())
                         {
                             using (StreamReader reader = new StreamReader(stream, encode))
                             {
                                 result = reader.ReadToEnd();
                             }
                         }
                     }
                 }
             }
              catch (WebException ex)
             {
 //这样可以看见返回的错误详细，如果上传项目别这样写直接输出错误就行
                 LogHelper.WriteErrorLog(ex);
                 var httpErrResponse = ((HttpWebResponse)ex.Response);
                 using (var stream = httpErrResponse.GetResponseStream())
                 {
                     if (stream != null)
                     {
                         using (var reader = new StreamReader(stream))
                         {
                             result = reader.ReadToEnd();
                         }
                     }
                 }
             }
             return HttpUtility.HtmlDecode(result);//返回调用接口返回值
         }

PS：HttpWebReq类详细：https://msdn.microsoft.com/zh-cn/library/system.net.httpwebrequest(v=vs.110).aspx

二.调用方法

  public string GetUserBalance(MemberInfo model)//这个参数需要什么就可以传什么
           {
               LogHelper.WriteLog(string.Format("TingZi_Unique:{0}", DateTime.Now));//写日志
              string PostUrl = "接口地址";
              string JsonStr = "{\"username\":\"" + model.UserName + "\"}";//JSON类型参数，参数写这里
              string retData = string.Empty;
              retData = UtilsHelper.HttpWebRequest(PostUrl, JsonStr, Encoding.UTF8, contentType: "application/json", method: "POST");//调用方法
 　　　　　　　　　//现在获取到了retData想判断什么判断什么
              return "你想返回什么就返回什么！";
         }

PS：小菜一只请多多指教