Struts2 display stream pdf -

i want display pdf stream in new popup windows, when stream empty, want write error message in current page (edition.jsp)

in edition.jsp page :

<s:form id="pdf" action="exportpdf" theme="simple" target="pageedition" >      ...     <sj:menu name="typeedition" cssclass="edition" list="listeeditions" /> </s:form> 

in struts.xml :

<action name="exportpdf" class="exportpdfaction">    <result name="success" type="stream">        <param name="inputname">inputstreampdf</param>         <param name="contenttype">application/pdf</param>         <param name="contentdisposition">filename="myfile.pdf"</param>         <param name="buffersize">2048</param>     </result>     <result name="error">/web-inf/web/edition.jsp</result>           </action> 

javascript, when click on menu item edition

$('.edition').bind('click', function(even, data) {    window.open('', 'pageedition', 'location=no, menubar=no, height=600, width=900' );    $('#pdf').submit();            }); 

when return error, don't want go in target page.

---

yes, try via ajax jquery, now, problem display pdf !

//  click on menu item edition $('.edition').bind('click', function(event, data) {     $('#pdf').submit();        });   $('#pdf').submit(function(event) {     // stop form submitting     event.preventdefault();      // post parameters      var posting = $.post( $( ).attr( 'action' ), $('#pdf').serialize());      // wait results     posting.done(function( data, event ) {     if (data.substring(0,4) != '%pdf') {        alert ("error");              } else {        // format pdf recognize, not display (the stream in url, not in content)        window.open('data:application/pdf,'+ data, 'pageedition', 'menubar=no, height=600, width=900' );     }    }); 

when use solution, stream response (data parameter) not display correctly. stream in url not in content. try :

window.document.write(data); 

but it's html content.
how can display pdf stream in javascript ?
thanks