如何让我的VB6表单POST 2个瓦尔，拉从一个URL的结果，然后分配一个VB6 VAR的结果？
我需要有人来告诉我非常基本的VB6的示例代码或点我在正确的方向。 这是最简单的形式 - 在最终产品中，PHP的增值经销商会写信给MySQL，但是这不是我需要帮助。
我有一个接受两个参数一个简单的PHP页面：
test.php?var1=secret&var2=pass
这是我非常简单的PHP代码
<?php
$var1 = $_GET['var1'];
$var2 = $_GET['var2'];
$varAcc = "ACCEPTED";
$varDen = "DENIED";
if ($var1 === "secret" && $var2 === "pass")
{
echo $varAcc;
}
else
{
echo $varDen;
}
?>
这背后的逻辑是要去VB6登录与“username”的“密码”和“硬件ID”，并发送哈希值。 哈希将反对的MySQL进行检查，看它是否存在，并返回YES或NO的访问，有多少天在他们的帐户中还有剩余，和其他一些细节，比如姓名，帐户信息等。
（NO ..我不希望使用XML，只是想我会把那个在那里..只要POST和接收到增值经销商）
谢谢...
如果你必须使用POST，那么你将不得不使用Internet传输控制。 在VB6 IDE，按CTL-T，然后选择 “Microsoft Internet传输控制6.0”。 按确定。
添加控件到窗体的实例。 称它为“的Inet”。 添加一个名为“cmdPost”到窗体命令按钮。 添加到“Microsoft脚本运行时”参考（见菜单项目=>参考）。
下面的代码添加到您的表格：
Option Explicit
Private Declare Function InternetCanonicalizeUrl Lib "Wininet.dll" Alias "InternetCanonicalizeUrlW" ( _
ByVal lpszUrl As Long, _
ByVal lpszBuffer As Long, _
ByRef lpdwBufferLength As Long, _
ByVal dwFlags As Long _
) As Long
Private m_sData As String
Private m_nDataReceived As Long
Private m_bPostActive As Boolean
Private m_bDataReceived As Boolean
Private m_bError As Boolean ' For error handling.
Private m_bDisconnected As Boolean
Private Sub cmdPost_Click()
Dim dctParameters As Scripting.Dictionary
txtOutput.Text = vbNullString
m_sData = vbNullString
Set dctParameters = New Scripting.Dictionary
dctParameters.Add "var1", "secret"
dctParameters.Add "var2", "pass"
txtOutput.Text = Post("http://localhost:80/test.php", dctParameters)
End Sub
' Returns post data string based on dictionary.
Private Function GetPostDataString(ByRef the_dctParameters As Scripting.Dictionary) As String
Dim vName As Variant
Dim sPostDataString As String
For Each vName In the_dctParameters
sPostDataString = sPostDataString & UrlEncode(CStr(vName)) & "=" & UrlEncode(CStr(the_dctParameters.Item(vName))) & "&"
Next vName
GetPostDataString = Left$(sPostDataString, Len(sPostDataString) - 1)
End Function
Private Sub Inet_StateChanged(ByVal State As Integer)
' Ignore state change if we are outside the Post function.
If m_bPostActive Then
Select Case State
Case StateConstants.icResponseReceived
ReceiveData False
Case StateConstants.icResponseCompleted
ReceiveData True
Case StateConstants.icDisconnected
m_bDisconnected = True
Case StateConstants.icError
m_bError = True
End Select
End If
End Sub
' Synchronous Post function.
Private Function Post(ByRef the_sURL As String, ByRef the_dctParameters As Scripting.Dictionary)
Dim sPostData As String
Dim sHeaders As String
' Flag that we are in the middle of this function.
m_bPostActive = True
' Create a string containing the POST parameters.
sPostData = GetPostDataString(the_dctParameters)
' Create a headers string to allow POST.
sHeaders = _
"Content-Type: application/x-www-form-urlencoded" & vbNewLine & _
"Content-Length: " & CStr(Len(sPostData)) & vbNewLine & _
"Connection: Keep-Alive" & vbNewLine & _
"Cache-Control: no-cache" & vbNewLine
Inet.Execute the_sURL, "POST", GetPostDataString(the_dctParameters), sHeaders
' Allow Inet events to fire.
Do
DoEvents
Loop Until m_bDataReceived Or m_bDisconnected
If m_bDataReceived Then
Post = m_sData
End If
' Clear all state flags to defaults.
m_bDataReceived = False
m_bDisconnected = False
m_bError = False
m_sData = vbNullString
m_nDataReceived = 0
' Flag that we have exited this function.
m_bPostActive = False
End Function
' Receive as much data as we can.
' <the_bCompleted> should be True if the response is completed i.e. all data is available.
Private Sub ReceiveData(ByVal the_bCompleted As Boolean)
Const knBufferSize As Long = 1024
Dim nContentLength As Long
Dim sContentType As String
Dim sChunk As String
Dim nChunkSize As Long
' If we haven't yet created our buffer, do so now, based on the size of the incoming data.
If m_nDataReceived = 0 Then
nContentLength = CLng(Inet.GetHeader("Content-length"))
m_sData = Space$(nContentLength)
' You might want to do a check on the content type here, and if it is wrong, cancel the request with Inet.Cancel .
sContentType = Inet.GetHeader("Content-type")
End If
' Retrieve data until we have all the data.
Do Until m_nDataReceived = Len(m_sData)
' If called when not all data has been received, then exit function if it is currently executing.
If Not the_bCompleted Then
If Inet.StillExecuting Then
Debug.Print "Exiting"
Exit Sub
End If
End If
' Get a chunk, copy it into the output buffer, and increment the amount of data received.
sChunk = Inet.GetChunk(knBufferSize, DataTypeConstants.icString)
nChunkSize = Len(sChunk)
Mid$(m_sData, m_nDataReceived + 1, nChunkSize) = sChunk
m_nDataReceived = m_nDataReceived + nChunkSize
Loop
' Flag that all data has been retrieved.
m_bDataReceived = True
End Sub
' Encode the URL data.
Private Function UrlEncode(ByVal the_sURLData As String) As String
Dim nBufferLen As Long
Dim sBuffer As String
' Only exception - encode spaces as "+".
the_sURLData = Replace$(the_sURLData, " ", "+")
' Try to #-encode the string.
' Reserve a buffer. Maximum size is 3 chars for every 1 char in the input string.
nBufferLen = Len(the_sURLData) * 3
sBuffer = Space$(nBufferLen)
If InternetCanonicalizeUrl(StrPtr(the_sURLData), StrPtr(sBuffer), nBufferLen, 0&) Then
UrlEncode = Left$(sBuffer, nBufferLen)
Else
UrlEncode = the_sURLData
End If
End Function
VB形式不具备发送HTTP请求任何内置的机制。 有些人可能会建议你使用Internet传输控制。 然而，VB用户控件有HTTP，您可以使用，无需第三方控件，假设你使用GET方法，并使用查询字符串来传递你的参数的机制。 如果你必须使用POST，您必须使用Internet传输控制。
创建为“Microsoft脚本运行”一参一VB项目（参见菜单项目=>参考）。 添加一个用户控件。 称之为“HttpService的”。 设置InvisibleAtRuntime =真。 下面的代码添加到该用户控件：
Option Explicit
Private Const m_ksProperty_Default As String = ""
Private m_sHost As String
Private m_nPort As Long
Private m_sPath As String
Private m_dctQueryStringParameters As Scripting.Dictionary
Private m_sOutput As String
' Ensure that all parts of the query string are deleted.
Public Sub ClearQueryString()
Set m_dctQueryStringParameters = New Scripting.Dictionary
End Sub
' Executes "GET" method for URL.
Public Function Get_() As String
' Read in data from URL. UserControl_AsyncReadComplete will fire when finished.
UserControl.AsyncRead "http://" & m_sHost & ":" & CStr(m_nPort) & "" & m_sPath & "?" & GetQueryString(), vbAsyncTypeByteArray, m_ksProperty_Default, vbAsyncReadSynchronousDownload
' Return the contents of the buffer.
Get_ = m_sOutput
' Clear down state.
m_sOutput = vbNullString
End Function
' Returns query string based on dictionary.
Private Function GetQueryString() As String
Dim vName As Variant
Dim sQueryString As String
For Each vName In m_dctQueryStringParameters
sQueryString = sQueryString & CStr(vName) & "=" & m_dctQueryStringParameters.Item(vName) & "&"
Next vName
GetQueryString = Left$(sQueryString, Len(sQueryString) - 1)
End Function
' Sets the remote host.
Public Property Let Host(ByVal the_sValue As String)
m_sHost = the_sValue
End Property
' Sets the directory and filename part of the URL.
Public Property Let Path(ByVal the_sValue As String)
m_sPath = the_sValue
End Property
' Sets the port number for this request.
Public Property Let Port(ByVal the_nValue As Long)
m_nPort = the_nValue
End Property
' Sets a name/value pair in the query string. Supports duplicate names.
Public Property Let QueryStringParameter(ByVal the_sName As String, ByVal the_sValue As String)
m_dctQueryStringParameters.Item(the_sName) = the_sValue
End Property
' Fired when the download is complete.
Private Sub UserControl_AsyncReadComplete(AsyncProp As AsyncProperty)
' Gets the data from the internet transfer.
m_sOutput = StrConv(AsyncProp.Value, vbUnicode)
End Sub
Private Sub UserControl_Initialize()
' Initialises the scripting dictionary.
Set m_dctQueryStringParameters = New Scripting.Dictionary
End Sub
要使用此用户控件，将其添加到您的窗体。 称之为“HttpService的”。 添加一个名为“为txtOutput”测试表上的下面的代码文本框：
HttpService.Host = "localhost"
HttpService.Port = 80
HttpService.Path = "/test.php"
HttpService.QueryStringParameter("var1") = "secret"
HttpService.QueryStringParameter("var2") = "pass"
txtOutput.Text = HttpService.Get_
