我以为HttpClient
应该能够处理301
错误代码,并重定向到正确的地址。但是,使用以下地址(https://www.npr.org/templates/rss/podcast.php?id=510298),它将引发异常。浏览器能够正确处理它。只是想了解是否有出路或我缺少什么。
HttpClient client = new HttpClient();
var s = await client
.GetStringAsync("https://www.npr.org/templates/rss/podcast.php?id=510298");
投掷
Test1 [0:00.779] Failed: System.Net.Http.HttpRequestException : Response
status code does not indicate success: 301 (Moved Permanently).
System.Net.Http.HttpRequestException : Response status code does not
indicate success: 301 (Moved Permanently).
at System.Net.Http.HttpResponseMessage.EnsureSuccessStatusCode()
at System.Net.Http.HttpClient.GetStringAsyncCore(Task`1 getTask)
at XUnitTestProject1.UnitTest1.Test1() in
C:\Users\res\source\repos\test\XUnitTestProject1\UnitTest1.cs:line 13
我终于找到了原因。通常,HttpClient将正确处理重定向,但如果它来自https-> http,则不会处理重定向。就是这种情况。 chrome浏览器的响应让我很困惑,chrome中显示的重定向URL以https开头。
https://github.com/dotnet/runtime/issues/21446#issuecomment-298323133有一个解释