HttpClient 调用WebApi

最新推荐文章于 2021-05-12 21:09:16 发布

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本文介绍了一个名为HttpClientHelper的实用类，该类包含两个静态方法：用于GET请求的GetResponseJson和用于POST请求的PostResponseJson。这两个方法均返回JSON格式的数据，并通过HttpClient实现了对指定URL的异步请求。

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public class HttpClientHelper
{
        public static string GetResponseJson(string url)
        {
            HttpClient httpClient = new HttpClient();
            httpClient.DefaultRequestHeaders.Accept.Add(
               new MediaTypeWithQualityHeaderValue("application/json"));
            HttpResponseMessage response = httpClient.GetAsync(url).Result;

            if (response.IsSuccessStatusCode)
            {
                string responseJson = response.Content.ReadAsStringAsync().Result;
                return responseJson;
            }
            else
            {
                return "Error,StatusCode:" + response.StatusCode.ToString();
            }
}

public static string PostResponseJson(string url, string requestJson)
{
            HttpContent httpContent = new StringContent(requestJson);
            httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");
            HttpClient httpClient = new HttpClient();

            HttpResponseMessage response = httpClient.PostAsync(url, httpContent).Result;

            if (response.IsSuccessStatusCode)
            {
                string responseJson = response.Content.ReadAsStringAsync().Result;
                return responseJson;
            }
            else
            {
                return "Error,StatusCode:" + response.StatusCode.ToString();
            }
        }
}