记录HttpWebRequest辅助类-白红宇

记录HttpWebRequest辅助类

阅读量：5173 次

发布时间：2019-06-13

本文共 3695 字，大约阅读时间需要 12 分钟。

最近因为工作关系，需要通过HttpWebRequest去请求API，所有就写了个简单的辅助public sealed class HttpRequestHelper

{        private static string USER_AGENT = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.124 Safari/537.36";        private static string ACCEPT = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8";        private static string CONTENT_TYPE = "application/x-www-form-urlencoded; encoding=UTF-8"; ///         /// 单例        /// 
        private static volatile HttpRequestHelper instance;        private static object syncRoot = new object();        private HttpRequestHelper() { }        public static HttpRequestHelper Instance        {            get            {                if (instance == null)                {                    lock (syncRoot)                    {                        if (instance == null)                        {                            instance = new HttpRequestHelper();                        }                    }                }                return instance;            }        }        ///         /// Get请求        /// 
        /// url参数        /// 
     
      json格式结果
             public string Get(string URL)        {            string ret = string.Empty;            URL = URL.Replace("ACCESS_TOKEN", WxTokenHelper.Instance.Token);            var request = CreateRequest("GET", URL);            var response = request.GetResponse();            Stream responseStream = response.GetResponseStream();            StreamReader readStream = new StreamReader(responseStream, Encoding.UTF8);            ret = readStream.ReadToEnd();            readStream.Close();            return ret;        }        public string GetToken(string URL)        {            string ret = string.Empty;            var request = CreateRequest("GET", URL);            var response = request.GetResponse();            Stream responseStream = response.GetResponseStream();            StreamReader readStream = new StreamReader(responseStream, Encoding.UTF8);            ret = readStream.ReadToEnd();            readStream.Close();            return ret;        }        ///         /// Post请求        /// 
        /// 请求的URL        /// json格式参数        /// 
     
      json格式结果
             public string Post(string URL, string jsonData)        {            string ret = string.Empty;            URL = URL.Replace("ACCESS_TOKEN", WxTokenHelper.Instance.Token);            var request = CreateRequest("POST", URL);            if (!string.IsNullOrWhiteSpace(jsonData))            {                byte[] data = Encoding.UTF8.GetBytes(jsonData);                request.ContentLength = data.Length;                using (var requestStream = request.GetRequestStream())                {                    requestStream.Write(data, 0, data.Length);                };                var response = request.GetResponse() as HttpWebResponse;                using (var responseStream = response.GetResponseStream())                {                    using (var readStream = new StreamReader(responseStream, Encoding.UTF8))                    {                        ret = readStream.ReadToEnd();                    }                }            }            return ret;        }        private HttpWebRequest CreateRequest(string method, string URL)        {            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(URL);            request.Accept = ACCEPT;            request.UserAgent = USER_AGENT;            request.Method = method;            request.ContentType = CONTENT_TYPE; 　　　　     request.Proxy = null;            return request;        }    }