Fetch the data from the link using following code:

String uid=request.getParameter("uid");
String pwd=request.getParameter("pwd");
String msg=request.getParameter("msg");
String phone=request.getParameter("phone");
String provider=request.getParameter("provider");

After this either you can store the data into hidden field like this:

<form method="post" action="actionpage">
<input type="hidden" name="uid" value="<%=uid%>">
<input type="hidden" name="pwd" value="<%=pwd%>">
<input type="hidden" name="msg" value="<%=msg%>">
<input type="hidden" name="phone" value="<%=phone%>">
<input type="hidden" name="provider" value="<%=provider%>">
<input type="sumit" value="submit">
</form>

or you can use response.sendRedirect() to send the data to next page.