Scraping dynamic web page with VBA based on XMLHTTP object - vba

Question

I have problem with scraping table data from this page [http://www.eex.com/en/market-data/power/derivatives-market/phelix-futures]. I use this code, but do not scrape any data:
Public Sub ScrapTableData()
Dim sURL As String
Dim XMLHttpRequest As XMLHTTP
Dim HTMLDoc As New HTMLDocument
Dim elc As HTMLHtmlElement
Dim i As Integer
sURL = "http://www.eex.com/en/market-data/power/derivatives-market/phelix-futures"
Set XMLHttpRequest = New MSXML2.XMLHTTP
XMLHttpRequest.Open "GET", sURL, False
XMLHttpRequest.responseXML.async = False
XMLHttpRequest.send
Do While XMLHttpRequest.Status <> 200
DoEvents
Loop
While XMLHttpRequest.ReadyState <> 4
DoEvents
Wend
HTMLDoc.body.innerHTML = XMLHttpRequest.responseText
' Tables
Dim tbl As HTMLTable, row As HTMLTableRow, cell As HTMLTableCell
i = 1
For Each tbl In HTMLDoc.getElementsByTagName("table")
For Each row In tbl.Rows
For Each cell In row.Cells
ActiveSheet.Cells(i, 5) = cell.innerText
i = i + 1
Next
Next
Next
End Sub
My code does not find HTML table tags.
Also, if I use this part of code, do not list all HTML tags (for example HTML DIV tag) and HTML that describes 6 buttons:
i = 0
Dim elc As HTMLHtmlElement
For Each elc In HTMLDoc.all
Worksheets("Tables").Range("A1").Offset(i, 0) = elc.tagName
i = i + 1
Next
6 buttons: Year, Quarter, Month,..., Day
I need to simulate click on them to display (scrape) different tables' data.

Answer 1

I don't think the XMLHTTP approach will work in this case, you need to open IE. The following code will do this. You may need to modify the loop to put data in your worksheet, I didn't tinker with this. At the end, I've also placed some code that will change the tabs. Hope this helps
Sub test()
' open IE, navigate to the website of interest and loop until fully loaded
Set IE = CreateObject("InternetExplorer.Application")
my_url = "http://www.eex.com/en/market-data/power/derivatives-market/phelix-futures"
With IE
.Visible = True
.navigate my_url
.Top = 50
.Left = 530
.Height = 400
.Width = 400
Do Until Not IE.Busy And IE.readyState = 4
DoEvents
Loop
End With
' Collect data from tables
Set tbl = IE.document.getElementsByTagName("table")
For Each itm In tbl
i = 1
For Each itm2 In itm.Rows
For Each cell In itm2.Cells
ActiveSheet.Cells(i, 5) = cell.innertext
i = i + 1
Next
Next
Next
' Click on the 6 buttons, substitute "week", "year", etc. for the button you want to click
Set Results = IE.document.getElementsByTagName("a")
For Each itm In Results
If InStr(1, itm.innertext, "month", vbTextCompare) > 0 Then
itm.Click
Do Until Not IE.Busy And IE.readyState = 4
DoEvents
Loop
Exit For
End If
Next
' Do whatever is next
End Sub