我有一个 PCL、WP 和 WinStore 项目。在 PCL 项目中,我有一个使用这种方法的类:
private async Task<string> GetIpAddress()
{
const string url = "http://www.ip-adress.com/";
const string buscar = "<h3>Your IP address is:";
var client = new HttpClient();
var data = await client.GetStringAsync(url);
if (data.IndexOf(buscar, StringComparison.Ordinal) <= -1) return;
var IpAddress = data.Remove(0, data.IndexOf(buscar, StringComparison.Ordinal) + buscar.Length + 1);
IpAddress = IpAddress.Remove(IpAddress.IndexOf("</h3>", StringComparison.Ordinal));
return IpAddress;
}
当我在 Windows Phone 项目上调用该方法时,效果很好,但在 Windows 应用商店项目中却不行。相反,我收到此错误消息:
最佳答案
看来您需要凭据并改为指向 api,这就是它的“Forbiden”的原因
尝试像浏览器一样调用它:来自另一个问题“HttpClient Request like browser”
void Main()
{
GetIP("http://www.ip-adress.com/");
}
async void GetIP(string url){
try{
"Looking Up".Dump("OK");
var x = await GetResponse(url);
x.Dump();
}
catch(Exception e){
e.Dump("Problems:");
}
}
private static async Task<string> GetResponse(string url)
{
var httpClient = new HttpClient();
httpClient.DefaultRequestHeaders.TryAddWithoutValidation("Accept", "text/html,application/xhtml+xml,application/xml");
httpClient.DefaultRequestHeaders.TryAddWithoutValidation("Accept-Encoding", "gzip, deflate");
httpClient.DefaultRequestHeaders.TryAddWithoutValidation("User-Agent", "Mozilla/5.0 (Windows NT 6.2; WOW64; rv:19.0) Gecko/20100101 Firefox/19.0");
httpClient.DefaultRequestHeaders.TryAddWithoutValidation("Accept-Charset", "ISO-8859-1");
var response = await httpClient.GetAsync(new Uri(url));
response.EnsureSuccessStatusCode();
using (var responseStream = await response.Content.ReadAsStreamAsync())
//using (var decompressedStream = new System.IO.Compression.GZipStream(responseStream, CompressionMode.Decompress))
using (var streamReader = new StreamReader(responseStream))
{
return streamReader.ReadToEnd();
}
}
//注意:我注释掉了压缩,
关于c# - 我在可移植类库上使用 HttpClient 得到 403,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/21441688/