请求接口帮助类封装

情况描述：

  在项目中，我们做接口的同时，也会有需求需要访问别人的接口，如下是封装的帮助类

代码示例：

 
 
    ///
    /// 调用其他项目的接口帮助类
    ///
    public class CallOtherHelp
    {
        private static readonly string DefaultUserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";

        /// 
        /// 创建GET方式的HTTP请求 
        /// 
        ///请求的URL 
        ///请求的超时时间 
        ///请求的客户端浏览器信息，可以为空 
        ///随同HTTP请求发送的Cookie信息，如果不需要身份验证可以为空 
        public static HttpWebResponse CreateGetHttpResponse(string url, int? timeout, string userAgent, CookieCollection cookies)
        {
            if (string.IsNullOrEmpty(url))
            {
                throw new ArgumentNullException("url");
            }
            HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
            request.Method = "GET";
            request.UserAgent = DefaultUserAgent;
            if (!string.IsNullOrEmpty(userAgent))
            {
                request.UserAgent = userAgent;
            }
            if (timeout.HasValue)
            {
                request.Timeout = timeout.Value;
            }
            if (cookies != null)
            {
                request.CookieContainer = new CookieContainer();
                request.CookieContainer.Add(cookies);
            }
            return request.GetResponse() as HttpWebResponse;
        }
        /// 
        /// 创建POST方式的HTTP请求 
        /// 
        ///请求的URL 
        ///随同请求POST的参数名称及参数值字典 
        ///请求的超时时间 
        ///请求的客户端浏览器信息，可以为空 
        ///发送HTTP请求时所用的编码 
        ///随同HTTP请求发送的Cookie信息，如果不需要身份验证可以为空 
        ///  
        public static HttpWebResponse CreatePostHttpResponse(string url, IDictionary<string, string> parameters, int? timeout, string userAgent, Encoding requestEncoding, CookieCollection cookies, string contentType)
        {
            if (string.IsNullOrEmpty(url))
            {
                throw new ArgumentNullException("url");
            }
            if (requestEncoding == null)
            {
                throw new ArgumentNullException("requestEncoding");
            }
            HttpWebRequest request = null;
            //如果是发送HTTPS请求 
            if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
            {
                ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
                request = WebRequest.Create(url) as HttpWebRequest;
                request.ProtocolVersion = HttpVersion.Version10;
            }
            else
            {
                request = WebRequest.Create(url) as HttpWebRequest;
            }
            request.Method = "POST";
            request.ContentType = "application/x-www-form-urlencoded";
            if (!string.IsNullOrEmpty(contentType))
            {
                request.ContentType = contentType;
            }
            if (!string.IsNullOrEmpty(userAgent))
            {
                request.UserAgent = userAgent;
            }
            else
            {
                request.UserAgent = DefaultUserAgent;
            }

            if (timeout.HasValue)
            {
                request.Timeout = timeout.Value;
            }
            if (cookies != null)
            {
                request.CookieContainer = new CookieContainer();
                request.CookieContainer.Add(cookies);
            }
            //如果需要POST数据 
            if (!(parameters == null || parameters.Count == 0))
            {
                StringBuilder buffer = new StringBuilder();
                int i = 0;
                foreach (string key in parameters.Keys)
                {
                    if (i > 0)
                    {
                        buffer.AppendFormat("&{0}={1}", key, parameters[key]);
                    }
                    else
                    {
                        buffer.AppendFormat("{0}={1}", key, parameters[key]);
                    }
                    i++;
                }
                byte[] data = requestEncoding.GetBytes(buffer.ToString());
                using (Stream stream = request.GetRequestStream())
                {
                    stream.Write(data, 0, data.Length);
                }
            }
            return request.GetResponse() as HttpWebResponse;
        }

        private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
        {
            return true; //总是接受 
        }
    }



 

调用示例：

 

   /// 
   /// 返回类封装
   /// 
   public class JsonContentResult : ActionResult
    {
        public string code { get; set; }
        public string msg { get; set; }
        public object data { get; set; }
    }
    /// 
    /// 测试调用（url传递需要调用的地址）
    /// 
     public JsonContentResult Test(string url)
        {
            var response = CallOtherHelp.CreateGetHttpResponse(url, null, null, null);
            StreamReader myStreamReader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
            return JsonConvert.DeserializeObject(myStreamReader.ReadToEnd());
        }