static async Task<Uri> CreateCustomerAsync(Customer customer)
HttpClient client = new HttpClient();
//you never set the BaseAddress
//or the authentication information
//before making a call to a relative url!
HttpResponseMessage response = await client.PostAsJsonAsync("api/customers/1?output_format=JSON", customer);
response.EnsureSuccessStatusCode();
// return URI of the created resource.
return response.Headers.Location;
}
更好的方法是将HttpClient调用封装在类中,并将其封装在构造函数中,然后在任何方法中共享它。
public WrapperClass(Uri url, string username, string password, string proxyUrl = "")
if (url == null)
// ReSharper disable once UseNameofExpression
throw new ArgumentNullException("url");
if (string.IsNullOrWhiteSpace(username))
// ReSharper disable once UseNameofExpression
throw new ArgumentNullException("username");
if (string.IsNullOrWhiteSpace(password))
// ReSharper disable once UseNameofExpression
throw new ArgumentNullException("password");
//or set your credentials in the HttpClientHandler
var authenticationHeaderValue = new AuthenticationHeaderValue("Basic",
// ReSharper disable once UseStringInterpolation
Convert.ToBase64String(Encoding.UTF8.GetBytes(string.Format("{0}:{1}", username, password))));
_httpClient = string.IsNullOrWhiteSpace(proxyUrl)
? new HttpClient
DefaultRequestHeaders = { Authorization = authenticationHeaderValue },
BaseAddress = url
: new HttpClient(new HttpClientHandler
UseProxy = true,
Proxy = new WebProxy
Address = new Uri(proxyUrl),
BypassProxyOnLocal = false,
UseDefaultCredentials = true
DefaultRequestHeaders = { Authorization = authenticationHeaderValue },
BaseAddress = url
_httpClient.DefaultRequestHeaders.Accept.Clear();
_httpClient.DefaultRequestHeaders.AcceptEncoding.Clear();
_httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
public async Task<Member> SomeCallToHttpClient(string organizationId)
var task = await _httpClient.GetStringAsync(<your relative url>));
return JsonConvert.DeserializeObject<SomeType>(task,
new JsonSerializerSettings {ContractResolver = new CamelCasePropertyNamesContractResolver()});
}
票数 4
EN
Stack Overflow用户
发布于
2017-05-05 16:34:37
我打赌你需要完整的网址地址。当使用HttpClient时,url与调用方不相关。
static async Task<Uri> CreateCustomerAsync(Customer customer)
HttpClient client = new HttpClient();