HttpClient 一般Http请求的简单封装
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public class HttpHelper {/// <summary> /// 发起POST同步请求 /// /// </summary> /// <param name="url"></param> /// <param name="postData"></param> /// <param name="contentType">application/xml、application/json、application/text、application/x-www-form-urlencoded</param> /// <param name="headers">填充消息头</param> /// <returns></returns> public static string HttpPost(string url, string postData = null, string contentType = null, int timeOut = 30, Dictionary<string, string> headers = null) { postData = postData ?? ""; using (HttpClient client = new HttpClient()) { if (headers != null) { foreach (var header in headers) client.DefaultRequestHeaders.Add(header.Key, header.Value); } using (HttpContent httpContent = new StringContent(postData, Encoding.UTF8)) { if (contentType != null) httpContent.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue(contentType); HttpResponseMessage response = client.PostAsync(url, httpContent).Result; return response.Content.ReadAsStringAsync().Result; } } } /// <summary> /// 发起POST异步请求 /// </summary> /// <param name="url"></param> /// <param name="postData"></param> /// <param name="contentType">application/xml、application/json、application/text、application/x-www-form-urlencoded</param> /// <param name="headers">填充消息头</param> /// <returns></returns> public static async Task<string> HttpPostAsync(string url, string postData = null, string contentType = null, int timeOut = 30, Dictionary<string, string> headers = null) { postData = postData ?? ""; using (HttpClient client = new HttpClient()) { client.Timeout = new TimeSpan(0, 0, timeOut); if (headers != null) { foreach (var header in headers) client.DefaultRequestHeaders.Add(header.Key, header.Value); } using (HttpContent httpContent = new StringContent(postData, Encoding.UTF8)) { if (contentType != null) httpContent.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue(contentType); HttpResponseMessage response = await client.PostAsync(url, httpContent); return await response.Content.ReadAsStringAsync(); } } } /// <summary> /// 发起POST异步请求 /// </summary> /// <param name="url"></param> /// <param name="httpContent"></param> /// <param name="contentType">application/xml、application/json、application/text、application/x-www-form-urlencoded</param> /// <param name="headers">填充消息头</param> /// <returns></returns> public static async Task<string> HttpPostAsync(string url, HttpContent httpContent, string contentType = null, int timeOut = 30, Dictionary<string, string> headers = null) { using (HttpClient client = new HttpClient()) { client.Timeout = new TimeSpan(0, 0, timeOut); if (headers != null) { foreach (var header in headers) client.DefaultRequestHeaders.Add(header.Key, header.Value); } if (contentType != null) httpContent.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue(contentType); HttpResponseMessage response = await client.PostAsync(url, httpContent); return await response.Content.ReadAsStringAsync(); } } /// <summary> /// 发起GET同步请求 /// </summary> /// <param name="url"></param> /// <param name="headers"></param> /// <param name="contentType"></param> /// <returns></returns> public static string HttpGet(string url, Dictionary<string, string> headers = null) { using (HttpClient client = new HttpClient()) { if (headers != null) { foreach (var header in headers) client.DefaultRequestHeaders.Add(header.Key, header.Value); } HttpResponseMessage response = client.GetAsync(url).Result; return response.Content.ReadAsStringAsync().Result; } } /// <summary> /// 发起GET异步请求 /// </summary> /// <param name="url"></param> /// <param name="headers"></param> /// <param name="contentType"></param> /// <returns></returns> public static async Task<string> HttpGetAsync(string url, Dictionary<string, string> headers = null) { using (HttpClient client = new HttpClient()) { if (headers != null) { foreach (var header in headers) client.DefaultRequestHeaders.Add(header.Key, header.Value); } HttpResponseMessage response = await client.GetAsync(url); return await response.Content.ReadAsStringAsync(); } } }
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