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POjava.lang.NullPointerException at org.primefaces.context.RequestContext.getCurrentInstance
 

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  1. POjava.lang.NullPointerException at org.primefaces.context.RequestContext.getCurrentInstance
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    <p>I used a RequestContext's primeFaces object in a managed bean method in order to execute some javascript from the server side. I used to do this inside a Listener handler method (a method with an AjaxBehaviourEvent parameter handling requests from <code>f:ajax</code> tags) and it works but this time i used a method without any parameters.</p> <p>The problem is that i m appending some html with jquery .append() and had to use jquery ajax to send requests to server from added elements (i can't append any jsf components because they won't work as they are not generated by jsf itself) so I had to use bean methods without parameters and call that method from a servlet which handle ajax comming resquests.</p> <p>to explain this more in details, suppose i add html code with jquery this way : </p> <pre><code>$('#substartmenudiv').append('&lt;div id="congesdiv" /&gt;'); </code></pre> <p>and then add the code which must be executed once the new added div is clicked :</p> <pre><code>$('#congesdiv').click(function(){ $.post('AjaxRelaisServlet',{action:"setstrtmenustatus",startmenuisopen:startmenuisopen}); }); </code></pre> <p>and from the servlet i catch parameters sent by the ajax request and call the bean method :</p> <pre><code>protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { boolean startmenuisopen= Boolean.valueOf(request.getParameter("startmenuisopen")); UserBean.testcmdlink(startmenuisopen); </code></pre> <p>the called testcmdlink bean method contains the RequestContext object, it looks like this : </p> <pre><code>public static void testcmdlink(boolean startmenuisopen){ RequestContext context = RequestContext.getCurrentInstance(); if(!startmenuisopen){ context.execute("$('#substartmenudiv').append('&lt;div id="+"gestprofdiv"+" /&gt;');"); context.execute("displaymenuitems();"); context.execute("console.log('more elements are appended !!');"); startmenuisopen=true; }else{ context.execute("$('#substartmenudiv').empty();"); context.execute("window['bottomvalue'] =30;"); context.execute("console.log('start menu div is emptied !!');"); startmenuisopen=false; } } </code></pre> <p>Is there a way to make it work anywhere ? </p> <p>cheers !</p>
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    1. COPlease post code which explains what you want to do in that AJAX request, and method you want to call.
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    2. COHi BalusC !! i need u for my previous question please check http://stackoverflow.com/questions/15691240/servlet-3-0-doesnt-work
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    3. COi know some others ways can be made to get the same result but i need more control of the view from the server-side becose i will need to save html components css properties in the data base. Actually i need this way to work becose i ll need it more for the future.
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