c# - HttpWebResponse 返回 404 错误

Question

如何让 Httpwebresponse 忽略 404 错误并继续处理它？这比在输入中查找异常要容易，因为这种情况很少见。

Answer 1

我假设您的代码中某处有一行，例如：

HttpWebResponse response = request.GetResponse() as HttpWebResponse;

只需将其替换为：

HttpWebResponse response;

try
{
    response = request.GetResponse() as HttpWebResponse;
}
catch (WebException ex)
{
    response = ex.Response as HttpWebResponse;
}

Answer 2

    try
    {
        HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create("http://mysite.com");
        HttpWebResponse response = (HttpWebResponse)request.GetResponse();          
    }
    catch(WebException ex)
    {
        HttpWebResponse webResponse = (HttpWebResponse)ex.Response;          
        if (webResponse.StatusCode == HttpStatusCode.NotFound)
        {
            //Handle 404 Error...
        }
    }

Answer 3

如果您查看被抛出的 WebException 的属性，您将看到属性Response。这是你想要的？