C# 模拟Http请求

使用原因:

在我们服务端调用第三方接口时,如:支付宝,微信支付,我们服务端需要模拟http请求并加上一些自己的逻辑响应给前端最终达到我们想要的效果

1.使用WebClient

引用命名空间

using System.Net;
using System.Collections.Specialized;

Post发送请求

public void TestRequest()
        {
            using (var client = new WebClient())
            {
                var values = new NameValueCollection();
                values["school_name"] = "南轩中学";
                values["httpWithoutRpc"] = "1";
                var response = client.UploadValues("接口地址", values);
                var responseString = Encoding.Default.GetString(response);
            }
        }

Get发送请求

using (var client = new WebClient())
{
    var responseString = client.DownloadString("接口地址");
}

 2.使用WebRequest

我封装两个方法,用于处理post数据传输方式,Post Body form-data 传值形式专用,  application/json 这两种常用的,话不多说直接上代码

引用命名空间:

using HttpWebRequest
using System.IO

方法封装:

        /// <summary>
        /// Http请求数据
        /// </summary>
        /// <typeparam name="T">返回类型</typeparam>
        /// <param name="reqUrl">Url地址</param>
        /// <param name="method">Get/Post</param>
        /// <param name="paraObject">Http参数</param>
        /// <param name="headerValue">HttpHeader</param>
        /// <param name="timeOut">超时时间(毫秒)</param>
        /// <returns></returns>
        private T ReqUrlJson<T>(string reqUrl, string method, object paraObject, Dictionary<string, string> headerValue = null, int timeOut = 50000)
        {
            var paramData = JsonConvert.SerializeObject(paraObject);

            var request = WebRequest.Create(reqUrl) as HttpWebRequest;
            request.Timeout = timeOut;
            request.Method = method.ToUpperInvariant(); //http method
            //request.Headers.Add("source", "test"); //headers
            if (headerValue != null && headerValue.Count > 0)
            {
                foreach (var item in headerValue)
                {
                    if (!string.IsNullOrEmpty(item.Key) && !string.IsNullOrEmpty(item.Value))
                    {
                        request.Headers.Add(item.Key, item.Value);
                    }
                }
            }
            //处理post请求
            if (request.Method != "GET" && !string.IsNullOrEmpty(paramData) && paramData.Length > 0) //request data
            {
                request.ContentType = "application/json";
                byte[] buffer = Encoding.UTF8.GetBytes(paramData.Replace("\r\n", ""));
                request.ContentLength = buffer.Length;
                request.GetRequestStream().Write(buffer, 0, buffer.Length);
            }
            using (var resp = request.GetResponse() as HttpWebResponse)
            {
                using (var stream = new StreamReader(resp.GetResponseStream(), Encoding.UTF8))
                {
                    string result = stream.ReadToEnd();
                    return JsonConvert.DeserializeObject<T>(result); ;
                }
            }
        }

        /// <summary>
        /// Http请求数据（Post Body form-data 传值形式专用）
        /// </summary>
        /// <typeparam name="T">返回类型</typeparam>
        /// <param name="reqUrl">Url地址</param>
        /// <param name="headerValue">HttpHeader</param>
        /// <param name="timeOut">超时时间(毫秒)</param>
        /// <returns></returns>
        private T ReqUrlJson<T>(string reqUrl, Dictionary<string, string> headerValue, int timeOut = 50000)
        {
            var client = new System.Net.Http.HttpClient();
            client.Timeout = TimeSpan.FromMilliseconds(timeOut);
            var postContent = new MultipartFormDataContent();
            string boundary = string.Format("--{0}", DateTime.Now.Ticks.ToString("x"));
            postContent.Headers.Add("ContentType", $"multipart/form-data, boundary={boundary}");
            //postContent.Headers.Add("source", "test");
            if (headerValue != null && headerValue.Count > 0)
            {
                foreach (var key in headerValue.Keys)
                {
                    postContent.Add(new StringContent(headerValue[key]?.ToString() ?? string.Empty), key);
                }
            }
            HttpResponseMessage response = client.PostAsync(reqUrl, postContent).Result;
            var result = response.Content.ReadAsStringAsync().Result;
            return JsonConvert.DeserializeObject<T>(result);
        }

使用方法:

var response = new MZSABL().ReqUrlJson<MZSAResultModel<MZSASchoolListModel>>("第三方接口地址", "Post", JsonConvert.DeserializeObject<Dictionary<string, string>>(JsonConvert.SerializeObject(new MZWASerialNumberModel() { school_name = "南轩中学" })));

 篇尾:

因为本人用的是WebRequest,所以可能WebRequest那写的较详细,封装的两个方法基本上大多数场景都通用哦,如有疑问可以直接私信哦,这里我也推荐大家可以去了解下Post的几种数据传输方式方便更好的理解本片文章哦~,那本章就到此结束啦