I want to user HttpServletResponse object to compose a response that will tell the browser client to open a popup with some message - how can i do that?
A:
Add to HttpServletResponse some Javascript code that will open a popup, something like
<script type="text/javascript">
function popupWindow() {
window.open( "someLinkToBePoppedUp" )
}
</script>
darioo
2010-10-31 19:04:07
A:
Generally speaking, you can't.
Thanks to their popularity for annoying adverts, most browsers reject attempts to open popups that aren't a response to something the user does within a page.
If you just want to display messaging, you could just include it in a page, or output a script element with an alert statement in it.
David Dorward
2010-10-31 19:05:36
+1
A:
Basically, you cannot do that directly. You must send in response some code (probably HTML and JS) which will instruct client browser to show message window, eg
String someMessage = "Error !";
PrintWriter out = response.getWriter();
out.print("<html><head>");
out.print("<script type=\"text/javascript\">alert(" + someMessage + ");</script>");
out.print("</head><body></body></html>");
Fazi
2010-10-31 19:07:46
+2
A:
Every Servlet response is basically an Http doc/snippet. So you could return a call to a javascript function that will be executed on the client side. The function can be passed in that Servlet response or it can be pre-included in the .js file.
just an example:
//servlet code
PrintWriter out = response.getWriter();
response.setContentType("text/html");
out.println("<script type=\"text/javascript\">");
out.println("alert('deadbeef');");
out.println("</script>");
Vuk
2010-10-31 19:14:28
There is a problem - the original page becomes blank - i want the content to stay and the message to just pop up
Erik Sapir
2010-10-31 19:44:02
Oh, well then you're looking for some Ajax-like functionality. Just send an async request to the servlet. Check out this example - http://www.hiteshagrawal.com/ajax/ajax-programming-with-jsp-and-servlets
Vuk
2010-10-31 20:00:55