vb6 - Post 方法 + WinHttpRequest + multipart/form-data

Question

我很难过为什么这不起作用似乎找不到任何问题。

这是代码。

Public Const MULTIPART_BOUNDARY = "speed"
Function getBalance() As String
Dim sEntityBody As String
Dim postBody() As Byte
Dim username As String
Dim password As String

username = CStr(frmMain.txtUser.text)
password = CStr(frmMain.txtPass.text)

sEntityBody = "--" & MULTIPART_BOUNDARY & vbCrLf
sEntityBody = sEntityBody & "Content-Disposition: form-data; name=""function""" & vbCrLf & vbCrLf & "balance" & vbCrLf
sEntityBody = sEntityBody & "--" & MULTIPART_BOUNDARY & vbCrLf
sEntityBody = sEntityBody & "Content-Disposition: form-data; name=""username""" & vbCrLf & vbCrLf & username & vbCrLf
sEntityBody = sEntityBody & "--" & MULTIPART_BOUNDARY & vbCrLf
sEntityBody = sEntityBody & "Content-Disposition: form-data; name=""password""" & vbCrLf & vbCrLf & password & vbCrLf
sEntityBody = sEntityBody & "--" & MULTIPART_BOUNDARY & "--" & vbCrLf

postBody = StrConv(sEntityBody, vbFromUnicode)

Dim xhr As Object
Set xhr = CreateObject("WinHttp.WinHttpRequest.5.1")
xhr.Option(WinHttpRequestOption_EnableRedirects) = False
If xhr Is Nothing Then Set xhr = CreateObject("WinHttp.WinHttpRequest")
If xhr Is Nothing Then Set xhr = CreateObject("MSXML2.ServerXMLHTTP")
If xhr Is Nothing Then Set xhr = CreateObject("Microsoft.XMLHTTP")
xhr.open "POST", "http://poster.example.com", False

xhr.setRequestHeader "User-Agent", "Alalala"
xhr.setRequestHeader "Content-Type", "multipart/form-data; boundary=" & MULTIPART_BOUNDARY
xhr.setRequestHeader "Content-Length", Len(sEntityBody)
xhr.send "" + sEntityBody 'postBody 'URLEncode(sEntityBody)

    If xhr.Status = 200 Then
        getBalance = xhr.responseText
    Else
        frmMain.addToChatbox "Failed at getting response from blah ErrCode:" & xhr.Status
    End If
End Function

现在下面的工作(虽然它只是一个 HTML 表单)。

<form 
 method="post" 
 action="http://poster.example.com/" 
 enctype="multipart/form-data">
 <input type="hidden" name="function" value="balance">
 <input type="text"   name="username" value="blah">
 <input type="text"   name="password" value="blah">
 <input type="submit" value="Send">
</form>

这是一个数据包嗅探。 (将主机等更改为示例之后)

POST / HTTP/1.1..User-Agent: Alalala..Content-Type: multipart/form-data; boundary=speed..Content-Length: 233..Accept: /..Host: poster.example.com..Connection: Keep-Alive....--speed..Content-Dispostion: form-data; name="function"....balance..--speed..Content-Dispostion: form-data; name="username"....blah..--speed..Content-Dispostion: form-data; name="password"....blah..--speed--..

回复为空

HTTP/1.1 200 OK..Date: Thu, 07 Oct 2010 20:31:20 GMT..Server: Apache..Content-Length: 0..Connection: close..Content-Type: text/html; charset=UTF-8....

P.S.> 不必发送带有值 Send 的提交按钮，所以如果有人想知道，那就不是它了。
它可能是什么，我从嗅探中注意到，它将 header + 发布数据(上传数据)作为一个数据包发送，而 firefox/chrome 将其作为 2 个单独的数据包发送。

谢谢

Answer 1

拼写错误 内容配置必须是 内容配置是的，多亏了我已经受苦了 6？也许7个小时。
终于解决了