一个WebAPI客户端的HttpClient
生命周期应该是什么?
是为多个调用使用一个HttpClient
实例更好吗?
像下面的示例(来自http://www.asp.net/web-api/overview/web-api-clients/calling-a-web-api-from-a-net-client)每个请求创建和处理HttpClient
的开销是多少?
using (var client = new HttpClient())
{
client.BaseAddress = new Uri("http://localhost:9000/");
client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
// New code:
HttpResponseMessage response = await client.GetAsync("api/products/1");
if (response.IsSuccessStatusCode)
{
Product product = await response.Content.ReadAsAsync<Product>();
Console.WriteLine("{0}\t${1}\t{2}", product.Name, product.Price, product.Category);
}
}