以下代码出现错误。
HttpWebRequest webRequest = WebRequest.Create(URL) as HttpWebRequest;
webRequest.CookieContainer = cookies;
StreamReader responseReader = new StreamReader(webRequest.GetResponse().GetResponseStream());
HttpWebResponse response = (HttpWebResponse)webRequest.GetResponse();
response.Cookies = webRequest.CookieContainer.GetCookies(webRequest.RequestUri); //Error here
string responseData = responseReader.ReadToEnd();
responseReader.Close();
错误：System.InvalidOperationException：提交请求后无法执行此操作。 在System.Net.HttpWebRequest.GetResponse（）
上面的代码有什么问题？
答案 0 :(得分：4)
HttpWebResponse.Cookies Property应该已经包含与响应关联的cookie。
您还应避免多次致电drop table if exists #tmp
CREATE TABLE #tmp (rnd_val int, weights int)
INSERT INTO #tmp VALUES (1001, 54);
INSERT INTO #tmp VALUES (2001, 27);
INSERT INTO #tmp VALUES (2002, 21);
update @tab set ChannelID = null
while ((select count(1) from @tab where ChannelID is null) > 0)
begin
;with cte as
(select top 1 [Date], ChannelID from @tab where ChannelID is null)
update cte set ChannelID = (select top 1 rnd_val from #tmp order by RAND(CAST(NEWID() AS VARBINARY)) * weights desc)
end
select * from @tab
。
GetResponse您可以将cookie容器重用于后续请求，因为它们会被响应添加