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C#之HttpClient的同步使用方式

更新時間：2023年11月07日 14:38:02 作者：cnwjl

這篇文章主要介紹了C#之HttpClient的同步使用方式,具有很好的參考價值,希望對大家有所幫助,如有錯誤或未考慮完全的地方,望不吝賜教

C# HttpClient的同步使用

無返回值函數(shù)

  private async void  getservertime()
        {
            string servertime = "0";//實際應(yīng)用時用全局變量 ，傳入?yún)?shù)不可用ref out關(guān)鍵字
            HttpClientHandler handler1 = new HttpClientHandler();
            handler1.AllowAutoRedirect = false;
            HttpClient httpClient1 = new HttpClient(handler1);
            httpClient1.DefaultRequestHeaders.Add("user-agent", UserAgent);
            if (InternetGetConnectedState(0, 0) == false)
            {
                //未聯(lián)網(wǎng)
                servertime = "0";
                return ;
            }
             
            try
            {
                HttpResponseMessage  result  = await  httpClient1.GetAsync("https://api.m.taobao.com/rest/api3.do?api=mtop.common.getTimestamp");
               
                if (result.IsSuccessStatusCode)
                {
                    result.EnsureSuccessStatusCode();
                    string responseBodyAsText = await result.Content.ReadAsStringAsync();
                    JObject sertime = JObject.Parse(responseBodyAsText);                  
                    servertime=sertime["data"]["t"].ToString();                 
                }
                    
                else
                {
                    servertime= "0";
                }
               
 
            }
            catch (HttpRequestException hre)
            {
                servertime = "0"; ;
            }
            handler1.Dispose();
            httpClient1.Dispose();
 
 
        }

有返回值函數(shù)

    private string getservertime()
 
        {
            HttpClientHandler handler1 = new HttpClientHandler();
           
            handler1.AllowAutoRedirect = false;
            HttpClient httpClient1 = new HttpClient(handler1);
            httpClient1.DefaultRequestHeaders.Add("user-agent", UserAgent);
            if (InternetGetConnectedState(0, 0) == false)
            {
              //未聯(lián)網(wǎng)
                return "0";
            }
             
            try
            {
                var task = httpClient1.GetAsync("https://api.m.taobao.com/rest/api3.do?api=mtop.common.getTimestamp");
                task.Wait();
                if (task.Result.IsSuccessStatusCode)
                    task.Result.EnsureSuccessStatusCode();
                else
                {
                    return "0";
                }
                HttpResponseMessage response = task.Result;
 
                //  txtStatusCode.Text = response.StatusCode + " " + response.ReasonPhrase + Environment.NewLine;
 
                var result = response.Content.ReadAsStringAsync();
                string responseBodyAsText = result.Result;
 
                JObject sertime = JObject.Parse(responseBodyAsText);
                handler1.Dispose();
                httpClient1.Dispose();
                return (sertime["data"]["t"].ToString());
 
 
            }
            catch (HttpRequestException hre)
            {
                hre.ToString();
            }
            handler1.Dispose();
            httpClient1.Dispose();
            return "0";
 
          
        }

C# HttpClient對接接口

最近在寫對接DHL接口的項目，大致了解了一些對接接口的請求方法。

POST帶參數(shù)，賬號認證請求

HttpClient client = new HttpClient();
//添加用戶身份認證
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", Convert.ToBase64String(Encoding.UTF8.GetBytes($"{"賬號"}:{"密碼"}")));

HttpContent httpContent = new StringContent(stringBuilder.ToString(), Encoding.UTF8);
httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");

Uri url = new Uri("請求鏈接");
//httpContent為請求攜帶的Json數(shù)據(jù)
var msg = client.PostAsync(url, httpContent).Result.Content.ReadAsStringAsync().Result;

Get帶賬號認證請求

 HttpClient client = new HttpClient();
 //添加用戶身份認證
 client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", Convert.ToBase64String(Encoding.UTF8.GetBytes($"{"賬號"}:{"密碼"}")));
 
Uri url = new Uri("請求鏈接");
var msg = client.GetAsync(url).Result.Content.ReadAsStringAsync().Result;