C# 调用http和https请求rest接口通用操作类

之前在做C#调用Restful接口的时候，因为时间比较匆忙，一直没有把这个类好好整理一下。最近一方面对于ContentType的整理感觉很不方便，另一方面对于Restful接口http和https调用使用不同的类感觉很不方便，发现调用http和https只要用一句话就可以解决了。于是，整理一个通用类，记录下来，方便以后使用。

感谢网上各路大神提供的资料。

代码如下：

using System;using System.IO;using System.Net;using System.Text;// 添加httpsusing System.Net.Security;using System.Security.Cryptography.X509Certificates;// end添加httpsnamespace NT_MiddleDataService.ADO{    public enum HttpVerbNew    {        GET,            //method  常用的就这几样，可以添加其他的   get：获取    post：修改    put：写入    delete：删除        POST,        PUT,        DELETE    }    public class ContentType//根据Postman整理，可以添加    {         public string Text = "text/plain";        public string JSON = "application/json";        public string Javascript = "application/javascript";        public string XML = "application/xml";        public string TextXML = "text/xml";        public string HTML = "text/html";    }    public class RestApiClient    {        public string EndPoint { get; set; }    //请求的url地址          public HttpVerbNew Method { get; set; }    //请求的方法        public string ContentType { get; set; } //格式类型        public string PostData { get; set; }    //传送的数据        public RestApiClient()        {            EndPoint = "";            Method = HttpVerbNew.GET;            ContentType = "text/xml";            PostData = "";        }        public RestApiClient(string endpoint, string contentType)        {            EndPoint = endpoint;            Method = HttpVerbNew.GET;            ContentType = contentType;            PostData = "";        }        public RestApiClient(string endpoint, HttpVerbNew method, string contentType)        {            EndPoint = endpoint;            Method = method;            ContentType = contentType;            PostData = "";        }        public RestApiClient(string endpoint, HttpVerbNew method, string contentType, string postData)        {            EndPoint = endpoint;            Method = method;            ContentType = contentType;            PostData = postData;        }        // 添加https        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)";        private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)        {            return true; //总是接受             }        // end添加https        public string MakeRequest()        {            return MakeRequest("");        }        public string MakeRequest(string parameters)        {            var request = (HttpWebRequest)WebRequest.Create(EndPoint + parameters);            // 添加https            if (EndPoint.Substring(0, 8) == "https://")            {                ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);            }            // end添加https            request.Method = Method.ToString();            request.ContentLength = 0;            request.ContentType = ContentType;            if (!string.IsNullOrEmpty(PostData) && Method == HttpVerbNew.POST)//如果传送的数据不为空，并且方法是post            {                var encoding = new UTF8Encoding();                var bytes = Encoding.GetEncoding("iso-8859-1").GetBytes(PostData);//编码方式按自己需求进行更改，我在项目中使用的是UTF-8                request.ContentLength = bytes.Length;                using (var writeStream = request.GetRequestStream())                {                    writeStream.Write(bytes, 0, bytes.Length);                }            }            if (!string.IsNullOrEmpty(PostData) && Method == HttpVerbNew.PUT)//如果传送的数据不为空，并且方法是put            {                var encoding = new UTF8Encoding();                var bytes = Encoding.GetEncoding("iso-8859-1").GetBytes(PostData);//编码方式按自己需求进行更改，我在项目中使用的是UTF-8                request.ContentLength = bytes.Length;                using (var writeStream = request.GetRequestStream())                {                    writeStream.Write(bytes, 0, bytes.Length);                }            }            using (var response = (HttpWebResponse)request.GetResponse())            {                var responseValue = string.Empty;                if (response.StatusCode != HttpStatusCode.OK)                {                    var message = String.Format("Request failed. Received HTTP {0}", response.StatusCode);                    throw new ApplicationException(message);                }                // grab the response                using (var responseStream = response.GetResponseStream())                {                    if (responseStream != null)                        using (var reader = new StreamReader(responseStream))                        {                            responseValue = reader.ReadToEnd();                        }                }                return responseValue;            }        }        public bool CheckUrl(string parameters)        {            bool bResult = true;            HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(EndPoint + parameters);            myRequest.Method = Method.ToString();             //设置提交方式可以为＂ｇｅｔ＂，＂ｈｅａｄ＂等            myRequest.Timeout = 10000;　             //设置网页响应时间长度            myRequest.AllowAutoRedirect = false;//是否允许自动重定向            HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();            bResult = (myResponse.StatusCode == HttpStatusCode.OK);//返回响应的状态            return bResult;        }    }}

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