IE Web Automation - How to enter catcha while using New XMLHTTP post request method

问题

I'm a beginner. I tried but failed to pull web page response while using xmlhttprequest post method. I'm trying to fill web form using excel file by making a query string but its not working. I don't know whether querystring is correct and don't know how to enter captcha? Value of captcha can be seen by inspecting element. I'll be grateful if somebody can help. Ample of thanks in advance.

Excel file blueprint:

Cells(2,3)         Cells(2,4)      Cells(2,5)  Cells(2,6)          Cells(2,7)      Cells(2,8)
p_qry_no           p_firstname     p_gender    p_nationality       p_dob           Captcha
20120087048131     Annaliza        2           237                 17-04-1978      <img src="/portal/pls/portal/inimm_db.DBPK_CAPTCHA.GenerateCaptcha?randomValue=7732517">

My Code is as follows:

Option Explicit
Public Sub GetData()
    Dim res As Variant, QueryString As String, i As Long

    Dim p_qry_no As Long, p_firstname As String, p_gender As Long, p_nationality As Long, p_dob As String

    Dim sht As Worksheet, lastRow As Long
    Set sht = ThisWorkbook.sheets("Visa")

    With sht
        lastRow = .Cells(.Rows.Count, "C").End(xlUp).Row
    End With

    For i = 2 To lastRow

'p_qry_no: 20120087048131
'p_qry_type: 2
'p_firstname: Annaliza
'p_gender: 2
'p_nationality: 237
'p_dob: 17-04-1978

       QueryString = "{""p_qry_no"":""" & sht.Cells(i, 3) & """,""p_qry_type"":""2"",""p_firstname"":""" & sht.Cells(i, 4) & """,""p_gender"":""" & sht.Cells(i, 5) & """,""p_nationality"":""" & sht.Cells(i, 6) & """,""p_dob"":""" & sht.Cells(i, 7) & """}"

        With New XMLHTTP60
            .Open "POST", "http://ednrd.ae/portal/pls/portal/INIMM_DB.DBPK_VISAVALIDITY.PROCESS_QUERY_STATUS_REDIR", False
            .setRequestHeader "User-Agent", "Mozilla/5.0"
            .setRequestHeader "Content-Type", "application/json"
            .send QueryString
            res = .responseText
            Debug.Print res
        End With
        sht.Cells(i, 8) = res
    Next i
End Sub

来源：https://stackoverflow.com/questions/50999540/ie-web-automation-how-to-enter-catcha-while-using-new-xmlhttp-post-request-met

标签

excel

vba

excel-vba

automation

xmlhttprequest