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我需要幫助。 我的身體在編譯之前可以很好地處理數據。HttpWebRequest - 如何動態設置變量到本體中
Dim body As String = "{""travelForm"":[{""title"":""IT Unix 4"",""description"":""<p>Hello fjdsbfjsdhfkjn,vxnc bx vxnodjosidfjlkj kjk sds iufsyiufshkjdjxfoksjdkjfsiodhfsdhfsudhfskjdlfksjlfsjdkfhkjhjk hj hdkjfhksjdhfjkh kjh skjdhfkjsdhfkj hkjsdhfskjdskh jhsjdhfkjshdfjsdhkjfsdhkhsdkjsdhskjhfskjdhjshjdhfskjhskdhfkjdhfj hkjshdfsd</p>"",""phone"":""0199654128"",""categoryfont"":7459250,""categoryClass"":""Toyota"",""DataCategory"":100,""where"":{""latitude"":-33.8659683,""longitude"":18.534443499999952,""radius"":5000},""categoryAttributes"":[],""imageWeb"":[""c:\mypict100.JPG?set_id=8800005007""]}]}"
但是當我嘗試設置變量dinamycally（Form3.txtbx_title.Text）象下面這樣，這是行不通的。
Dim body As String = "{""travelForm"":[{""title"":"&Form3.txtbx_title.Text&",""description"":""<p>Hello fjdsbfjsdhfkjn,vxnc bx vxnodjosidfjlkj kjk sds iufsyiufshkjdjxfoksjdkjfsiodhfsdhfsudhfskjdlfksjlfsjdkfhkjhjk hj hdkjfhksjdhfjkh kjh skjdhfkjsdhfkj hkjsdhfskjdskh jhsjdhfkjshdfjsdhkjfsdhkhsdkjsdhskjhfskjdhjshjdhfskjhskdhfkjdhfj hkjshdfsd</p>"",""phone"":""0199654128"",""categoryfont"":7459250,""categoryClass"":""Toyota"",""DataCategory"":100,""where"":{""latitude"":-33.8659683,""longitude"":18.534443499999952,""radius"":5000},""categoryAttributes"":[],""imageWeb"":[""c:\mypict100.JPG?set_id=8800005007""]}]}"
請參閱完整的代碼如下
Imports System.Net
Imports System.Text
Imports System.IO
Imports System.Diagnostics
Imports System.IO.Compression
Imports System.Net.WebUtility
Module PostTravelForm
Public logincookiePost As CookieContainer
Dim logincookstring As String
Dim theWantedString As String
'Calls request functions sequentially.
Sub MakeRequests3()
Dim response As HttpWebResponse
Dim responseText As String
If Request_www_germany_com(response) Then
'Success, possibly use response.
responseText = ReadResponse(response)
response.Close()
Else
'Failure, cannot use response.
End If
End Sub
'Returns the text contained in the response. For example, the page HTML. Only handles the most common HTTP encodings.
Public Function ReadResponse(response As HttpWebResponse) As String
Using responseStream = response.GetResponseStream()
Dim streamToRead As Stream = responseStream
If response.ContentEncoding.ToLower().Contains("gzip") Then
streamToRead = New GZipStream(streamToRead, CompressionMode.Decompress)
ElseIf response.ContentEncoding.ToLower().Contains("deflate") Then
streamToRead = New DeflateStream(streamToRead, CompressionMode.Decompress)
End If
Using streamReader = New StreamReader(streamToRead, Encoding.UTF8)
Return streamReader.ReadToEnd()
End Using
End Using
End Function
\t
''' <summary>
''' Tries to request the URL: https://www.travel.com/postad/create
''' </summary>
''' <param name="response">After the function has finished, will possibly contain the response to the request.</param>
''' <returns>True if the request was successful; false otherwise.</returns>
\t
Private Function Request_www_germany_com(ByRef response As HttpWebResponse) As Boolean
response = Nothing
Try
'Create request to URL.
Dim request As HttpWebRequest = DirectCast(WebRequest.Create("https://www.travel.com/api/postad/create"), HttpWebRequest)
Dim tempCookies As New CookieContainer
'Set request headers.
request.KeepAlive = True
request.Accept = "application/json, text/javascript, */*; q=0.01"
request.Headers.Add("Origin", "https://www.travel.com")
request.Headers.Add("x-requested-with", "XMLHttpRequest")
request.UserAgent = "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36"
request.CookieContainer = logincookiePost
request.ContentType = "application/json"
request.Referer = "https://www.travel.com/post"
request.Headers.Set(HttpRequestHeader.AcceptEncoding, "gzip, deflate, br")
request.Headers.Set(HttpRequestHeader.AcceptLanguage, "en-US,en;q=0.8")
'Set request method
request.Method = "POST"
' Disable 'Expect: 100-continue' behavior. More info: http://haacked.com/archive/2004/05/15/http-web-request-expect-100-continue.aspx
request.ServicePoint.Expect100Continue = False
Console.WriteLine(Form3.txtbx_title.Text & " Test !!!!!!!!!!!!")
Dim txtbx As String = "<p>CISCO Senior Network Engineer</p>"
'Set request body.
Dim body As String = "{""ads"":[{""title"":""…" + txtbx + "…"",""description"":""<p>" + Form3.txtbx_descript.Text.Replace("""", "\""") + "</p>"",""phone"":""0799654128"",""categoryId"":9250,""categoryName"":""Computer Operators"",""parentCategory"":8,""location"":{""latitude"":-33.8659683,""longitude"":18.534443499999952,""radius"":2000},""categoryAttributes"":[],""imageUrls"":[""https://i.ebayimg.com/00/s/NjAwWDgwMA==/z/~qIAAOSwU8hY75kG/$_1.PNG?set_id=8800005007""]}]}"
Dim postBytes As Byte() = System.Text.Encoding.UTF8.GetBytes(body)
request.ContentLength = postBytes.Length
Dim stream As Stream = request.GetRequestStream()
stream.Write(postBytes, 0, postBytes.Length)
stream.Close()
'Get response to request.
response = DirectCast(request.GetResponse(), HttpWebResponse)
Catch e As WebException
'ProtocolError indicates a valid HTTP response, but with a non-200 status code (e.g. 304 Not Modified, 404 Not Found)
If e.Status = WebExceptionStatus.ProtocolError Then
response = DirectCast(e.Response, HttpWebResponse)
Else
Return False
End If
Catch e As Exception
If response IsNot Nothing Then
response.Close()
End If
Return False
End Try
Return True
End Function
End Module
_「這行不通」_是一個非常模糊的問題描述。什麼/沒有發生？通過調用默認實例（'Form3.Show（）'）打開'Form3'，還是使用'New Form3'打開並調用'.Show（）'？ –
From3.txtbx_title.Text只包含一個字符串。 Form3是主窗體。我也試過下面的Dim txtbx As String =「CISCO高級網絡工程師」Dim body As String =「{」「travelForm」「：[{」「title」「」「」「IT Unix 4」「，」＆txtbx＆「 ：「」
Hello fjdsbfjsdhfkjn，vxnc bx vxnodjosidfjlkj kjk sds iufsyiufshkjdjxfoksjdkjhkjshdfsd
「」，「」phone「」：「」0199654128「」，「」categoryfont「」：7459250，「」categoryClass「」：「」Toyota「」「，」 「DataCategory」 「：100」， 「其中」 「：{」 「緯度」， 「： - 33.8659683」， 「經度」 「：18.534443499999952」， 「半徑」 「：5000}」， 「categoryAttributes」 「：[]，」 「imageWeb」「：[」「c：\ mypict100.JPG？set_id = 8800005007」「]}]}」 –'Form3.txtbx_title.Text' **只能包含一個字符串！他問_ **它包含的是什麼（它的價值是什麼），而不是它包含的是什麼類型。 - 再次，請定義_「它不起作用」_。 –