本文所述為visual basic6.0的一個模塊方法，是使用XMLHTTP實現Post與Get功能，雖然是一個老代碼，但是可以替代Inet控件，實現數據通訊。很值得學習借鑒一下。
主要模塊代碼如下：
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'=========================================================='| 模 塊 名 | XMLHTTP'| 說 明 | 替代Inet控件，實現數據通訊'==========================================================Public Enum DataEnum ResponseText = 1 ResponseBody = 2End Enum Public Function GetData(ByVal Url As String, ByVal DataStic As DataEnum) As Variant On Error GoTo ERR: Dim XMLHTTP As Object Dim DataS As String Dim DataB() As Byte Set XMLHTTP = CreateObject("Microsoft.XMLHTTP") XMLHTTP.Open "get", Url, True XMLHTTP.send While XMLHTTP.ReadyState <> 4 DoEvents Wend '--------------------------------------函數返回 Select Case DataStic Case ResponseText '--------------------------------直接返回字符串 DataS = XMLHTTP.ResponseText GetData = DataS Case ResponseBody '--------------------------------直接返回二進制 DataB = XMLHTTP.ResponseBody GetData = DataB Case ResponseBody + ResponseText '------------------------------二進制轉字符串[直接返回字串出現亂碼時嘗試] DataS = BytesToStr(XMLHTTP.ResponseBody) GetData = DataS Case Else '--------------------------------無效的返回 GetData = "" End Select '--------------------------------------釋放空間 Set XMLHTTP = Nothing Exit FunctionERR: GetData = ""End Function Public Function PostData(ByVal StrUrl As String, ByVal StrData As String, ByVal DataStic As DataEnum) As Variant On Error GoTo ERR: Dim XMLHTTP As Object Dim DataS As String Dim DataB() As Byte Set XMLHTTP = CreateObject("Microsoft.XMLHTTP") XMLHTTP.Open "POST", StrUrl, True XMLHTTP.setRequestHeader "Content-Length", Len(PostData) XMLHTTP.setRequestHeader "CONTENT-TYPE", "application/x-www-form-urlencoded" XMLHTTP.send (StrData) Do Until XMLHTTP.ReadyState = 4 DoEvents Loop '-----------------------------函數返回 Select Case DataStic Case ResponseText '--------------------------------直接返回字符串 DataS = XMLHTTP.ResponseText PostData = DataS Case ResponseBody '--------------------------------直接返回二進制 DataB = XMLHTTP.ResponseBody PostData = DataB Case ResponseBody + ResponseText '---------------------------二進制轉字符串[直接返回字串出現亂碼時嘗試] DataS = BytesToStr(XMLHTTP.ResponseBody) PostData = DataS Case Else '--------------------------------無效的返回 PostData = "" End Select '------------------------------------釋放空間 Set XMLHTTP = Nothing Exit FunctionERR: PostData = ""End Function Function BytesToStr(ByVal vIn) As String strReturn = "" For i = 1 To LenB(vIn) ThisCharCode = AscB(MidB(vIn, i, 1)) If ThisCharCode < &H80 Then strReturn = strReturn & Chr(ThisCharCode) Else NextCharCode = AscB(MidB(vIn, i + 1, 1)) strReturn = strReturn & Chr(CLng(ThisCharCode) * &H100 + CInt(NextCharCode)) i = i + 1 End If Next BytesToStr = strReturnEnd Function |
