Unable to log in to webpage using XMLHTTP - vba

Question

i am trying to login to webpage and download data but unable to get in, its secured site & require pwd. i tried thru post methd but no luck, plz help me where i am going wrong..
Sub Go_New_XML()
Dim oHttp As Object. sHTML as String
Set oHttp = CreateObject("MSXML2.XMLHTTP")
oHttp.Open "POST", "http://www.example.com/login.asp", False
oHttp.setRequestHeader "Content-type", "application/x-www-form-urlencoded"
oHttp.send "username=aa#gmail.com&login-password=passss"
While oHttp.readyState <> 4
DoEvents
Wend
sHTML = oHttp.responseText
Debug.Print sHTML
End Sub

Answer 1

If one has to achieve something like this, he has to look into the source of the Login HTML. In this case it shows:
<form name="FrontPage_Form1" action="user_login.asp" method="post" onsubmit="return FrontPage_Form1_Validator(this)" language="JavaScript" id="login-form">
<fieldset>
<p><label for="login-username">username</label>
<input id="login-username" autofocus="" class="round full-width-input" name="username" size="32" value="" type="text">
</p><br>
<p><label for="login-password">password</label>
<input id="login-password" class="round full-width-input" name="password" size="32" value="" type="password">
</p><br>
<p>
<input value="1" name="remember" =""="" type="checkbox">Remember Me</p><br>
<input name="redirect" value="http://stackoverflow.com/questions/25782351/unable-to-log-in-to-webpage-using-xmlhttp" type="hidden">
<p>I've forgotten my password.</p>
<br><br>
<input name="submit" value="Login" class="button round blue image-right ic-right-arrow" type="submit">
or
<a href="user_signup.asp" class="button round blue image-right ic-right-arrow">
REGISTER NOW</a> </fieldset>
</form>
So there are following elements in submit POST:
username with the username as value
password with the password as value
redirect with a URL as value
submit with "Login" as value
Note, that this are the names of the form elements.
The checkbox "remember" is not per default in the submit, because it is a checkbox and gets only submitted, if it is checked.
Maybe the site only accepts logins which has all default elements in POST. If so then try:
oHttp.send "username=aa#gmail.com&password=passss&redirect=http%3A%2F%2Fwww.example.com&submit=Login"
Note that the URL in redirect has to be URL encoded as needed for the type application/x-www-form-urlencoded.
Also maybe the site tries to prevent automated logins. You should respect that then.
Greetings
Axel