在这期间，由于.net core 并不基于IIS，我们的过去的网络请求代码在.net core框架下，有可能会出现不兼容，报错的现象。这里大致介绍下在.net core 下如何进行http请求，主要仍然是GET和POST方法，有错误的地方，欢迎指正！
先来说POST,POST我实现了三种方法，前两种基于的原理是完全一致的，后面的有些小小的差异，但他们的本质都是http请求，本质上是无区别的，只是实现方法有所不同。
废话不多说，上代码：
POST异步方法：
/// <summary> /// 异步请求post（键值对形式,可等待的） /// </summary> /// <param>网络基址(":59315")</param> /// <param>网络的地址("/api/UMeng")</param> /// <param>键值对List<KeyValuePair<string, string>> formData = new List<KeyValuePair<string, string>>();formData.Add(new KeyValuePair<string, string>("userid", "29122"));formData.Add(new KeyValuePair<string, string>("umengids", "29122"));</param> /// <param>编码格式</param> /// <param>头媒体类型</param> /// <returns></returns> public async Task<string> HttpPostAsync(string uri, string url, List<KeyValuePair<string, string>> formData = null, string charset = "UTF-8", string mediaType = "application/x-www-form-urlencoded") { string tokenUri = url; var client = new HttpClient(); client.BaseAddress = new Uri(uri); HttpContent content = new FormUrlEncodedContent(formData); content.Headers.ContentType = new MediaTypeHeaderValue(mediaType); content.Headers.ContentType.CharSet = charset; for (int i = 0; i < formData.Count; i++) { content.Headers.Add(formData[i].Key, formData[i].Value); } HttpResponseMessage resp = await client.PostAsync(tokenUri, content); resp.EnsureSuccessStatusCode(); string token = await resp.Content.ReadAsStringAsync(); return token; }
POST同步方法：
/// <summary> /// 同步请求post（键值对形式） /// </summary> /// <param>网络基址(":59315")</param> /// <param>网络的地址("/api/UMeng")</param> /// <param>键值对List<KeyValuePair<string, string>> formData = new List<KeyValuePair<string, string>>();formData.Add(new KeyValuePair<string, string>("userid", "29122"));formData.Add(new KeyValuePair<string, string>("umengids", "29122"));</param> /// <param>编码格式</param> /// <param>头媒体类型</param> /// <returns></returns> public string HttpPost(string uri, string url, List<KeyValuePair<string, string>> formData = null, string charset = "UTF-8", string mediaType = "application/x-www-form-urlencoded") { string tokenUri = url; var client = new HttpClient(); client.BaseAddress = new Uri(uri); HttpContent content = new FormUrlEncodedContent(formData); content.Headers.ContentType = new MediaTypeHeaderValue(mediaType); content.Headers.ContentType.CharSet = charset; for (int i = 0; i < formData.Count; i++) { content.Headers.Add(formData[i].Key, formData[i].Value); } var res = client.PostAsync(tokenUri, content); res.Wait(); HttpResponseMessage resp = res.Result; var res2 = resp.Content.ReadAsStringAsync(); res2.Wait(); string token = res2.Result; return token; }
遗憾的是，同步方法也是基于异步实现的，个人认为这样做会加大系统开销。如果各位有其他的高效实现，请不吝赐教！
接下来是通过流的方式进行POST：