VB的HttpPost请求

心已赠人 2021-09-19 13:48 514阅读 0赞

*注意：URL最后要“/”结尾，否则会导致格式不正确无法正常接收。我就在这里踩过坑，不加“/”服务端就是收不到POST数据，后面才发现加了“/”就可以收到了。*

**函数使用示列：**  
HttpPost(“[http://172.20.11.114/KormeeDbHicky/devpsot/","data1=88&data2=99][http_172.20.11.114_KormeeDbHicky_devpsot_data1_88_data2_99]”)

**下面是VB6的HTTP POST 发送数据的代码：**

'函数返回值是返回信息
    'Url：发送的Url地址
    'PostMsg：要发送的数据
    
    Function HttpPost(Url As String, PostMsg As String) As String
    On Error GoTo er
    Dim XMLHTTP As Object
    Set XMLHTTP = CreateObject("Msxml2.XMLHTTP")
    If Not IsObject(XMLHTTP) Then
        Set XMLHTTP = CreateObject("Microsoft.XMLHTTP")
        If Not IsObject(XMLHTTP) Then Exit Function
    End If
    XMLHTTP.Open "POST", Url, False
    XMLHTTP.setRequestHeader "CONTENT-TYPE", "application/x-www-form-urlencoded"
    'XMLHTTP.send PostMsg
    XMLHTTP.send UTF8EncodeURI(PostMsg)
    
    Do While XMLHTTP.ReadyState <> 4
        DoEvents
    Loop
    
    If XMLHTTP.Status = 200 Then
        HttpPost = XMLHTTP.ResponseText
    Else
        HttpPost = ""
    End If
    
    Exit Function
    er:
        MsgBox "发送POST请求失败！", , "提示"
    End Function
    
    '发送的内容转为utf8
    Public Function UTF8EncodeURI(szInput)
    Dim wch, uch, szRet
    Dim X
    Dim nAsc, nAsc2, nAsc3
    
    If szInput = "" Then
        UTF8EncodeURI = szInput
        Exit Function
    End If
    
    For X = 1 To Len(szInput)
        wch = Mid(szInput, X, 1)
        nAsc = AscW(wch)
        If nAsc < 0 Then nAsc = nAsc + 65536
        If (nAsc And &HFF80) = 0 Then
            szRet = szRet & wch
        Else
            If (nAsc And &HF000) = 0 Then
                uch = "%" & Hex(((nAsc \ 2 ^ 6)) Or &HC0) & Hex(nAsc And &H3F Or &H80)
                szRet = szRet & uch
            Else
                uch = "%" & Hex((nAsc \ 2 ^ 12) Or &HE0) & "%" & _
                Hex((nAsc \ 2 ^ 6) And &H3F Or &H80) & "%" & _
                Hex(nAsc And &H3F Or &H80)
                szRet = szRet & uch
            End If
        End If
    Next
    
    UTF8EncodeURI = szRet
        
    End Function

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[http_172.20.11.114_KormeeDbHicky_devpsot_data1_88_data2_99]: http://172.20.11.114/KormeeDbHicky/devpsot/%22,%22data1=88&data2=99
[20190422110216136.jpg_pic_center]: /images/20210726/e3165380ad634fe39e58419246b33d65.png