是否能用HttpWebRequest(用同一个Session_Id)同时向同一网站不同页面发送请求

ldzy07 2010-03-25 03:01:36

是否能用HttpWebRequest(用同一个Session_Id)同时向同一网站不同页面发送请求,这样做会存在什么问题，会导致什么后果？这些请求的影响会不会造成干扰？如果存在干扰如何解决？小弟先谢过了！

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hb1122 2010-04-14

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碰到新问题了？！

ldzy07 2010-03-31

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     Dim byteRequest1 As Byte() = Encoding.Default.GetBytes("synid=-1&sportid=1&oddsStyle=&dt=4&scope=1&fsynid=0")

                Dim httpWebRequest1 As HttpWebRequest

                Dim webResponse1 As HttpWebResponse

                httpWebRequest1 = CType(WebRequest.Create(Me.urls(1) & "/webroot/restricted/oddsdisplay/Main1DataFrame.aspx"), HttpWebRequest)

                '设置请求的SessionId

                Dim co1 As CookieContainer = New CookieContainer()

                co1.SetCookies(New Uri(Me.urls(1) & "/webroot/restricted/oddsdisplay/Main1DataFrame.aspx"), Me.cookies(1))

                httpWebRequest1.CookieContainer = co1

                httpWebRequest1.ContentType = "application/x-www-form-urlencoded"

                httpWebRequest1.Accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*"

                'httpWebRequest.Referer = "http://" & Me.Url & "/hometop.aspx?ip=&p="

                httpWebRequest1.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Maxthon; .NET CLR 1.1.4322)"

                httpWebRequest1.Method = "Post"

                httpWebRequest1.Timeout = 2000

                httpWebRequest1.ContentLength = byteRequest1.Length

                httpWebRequest1.AllowAutoRedirect = False '是否自动重定向

                httpWebRequest1.ServicePoint.Expect100Continue = False

                Dim noCachePolicy As New HttpRequestCachePolicy(HttpRequestCacheLevel.NoCacheNoStore)

                httpWebRequest1.CachePolicy = noCachePolicy

                Dim stream1 As Stream

                stream1 = httpWebRequest1.GetRequestStream()

                stream1.Write(byteRequest1, 0, byteRequest1.Length)

                stream1.Close()

                webResponse1 = CType(httpWebRequest1.GetResponse(), HttpWebResponse)

                Dim getdata1 As String = New StreamReader(webResponse1.GetResponseStream(), Encoding.UTF8).ReadToEnd()

ldzy07 2010-03-31

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Dim byteRequest1 As Byte() = Encoding.Default.GetBytes("synid=-1&sportid=1&oddsStyle=&dt=4&scope=1&fsynid=0")
Dim httpWebRequest1 As HttpWebRequest
Dim webResponse1 As HttpWebResponse
httpWebRequest1 = CType(WebRequest.Create(Me.urls(1) & "/webroot/restricted/oddsdisplay/Main1DataFrame.aspx"), HttpWebRequest)
'设置请求的SessionId
Dim co1 As CookieContainer = New CookieContainer()
co1.SetCookies(New Uri(Me.urls(1) & "/webroot/restricted/oddsdisplay/Main1DataFrame.aspx"), Me.cookies(1))
httpWebRequest1.CookieContainer = co1
httpWebRequest1.ContentType = "application/x-www-form-urlencoded"
httpWebRequest1.Accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*"
'httpWebRequest.Referer = "http://" & Me.Url & "/hometop.aspx?ip=&p="
httpWebRequest1.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Maxthon; .NET CLR 1.1.4322)"
httpWebRequest1.Method = "Post"
httpWebRequest1.Timeout = 2000
httpWebRequest1.ContentLength = byteRequest1.Length
httpWebRequest1.AllowAutoRedirect = False '是否自动重定向
httpWebRequest1.ServicePoint.Expect100Continue = False
Dim noCachePolicy As New HttpRequestCachePolicy(HttpRequestCacheLevel.NoCacheNoStore)
httpWebRequest1.CachePolicy = noCachePolicy
Dim stream1 As Stream
stream1 = httpWebRequest1.GetRequestStream()
stream1.Write(byteRequest1, 0, byteRequest1.Length)
stream1.Close()
webResponse1 = CType(httpWebRequest1.GetResponse(), HttpWebResponse)
Dim getdata1 As String = New StreamReader(webResponse1.GetResponseStream(), Encoding.UTF8).ReadToEnd()

ldzy07 2010-03-31

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以专业开发人员为伍 2010-03-30

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正常写代码没有任何问题。谁知道你怎么写的？

ldzy07 2010-03-30

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你分析得有道理，但是这他们不存在先后关系，随便访问那个都行，我用线程做的，即使这个线程只访问一个页面，如果没有Sleep的话他返回的结果就经常中是一个“.“（圆点)没其他了，如果用多线程每个线程访问不同的页面，但是他不是同时发送请求的话数据就正常否则就是“.“，那位大哥大姐帮帮忙啊，现在都急死我了！

ldzy07 2010-03-26