.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 = 60000, 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 = 0; //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, 0, 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