Java Concepts

Hi, Below is the code ,to create the different types of request URL. As we know in Liferay we have 3 types of URL 1.ActionRequest 2.RenderRequest 3.ResourceRequest. //Create Render URL PortletURL renderURL = PortletURLFactoryUtil.create( actionRequest,PortalUtil.getPortletId(actionRequest), themeDisplay.getLayout().getPlid(), "0"); renderURL.setParameter("customparam","customvalue"); actionResponse.sendRedirect(renderURL.toString()); If you want to create the ActionRequest put 1 instead of 0 in the last argument. We can check the code in the  PortletURLImpl class of liferay if (_lifecycle.equals(PortletRequest.ACTION_PHASE)) { _reservedParameters.put("p_p_lifecycle", "1"); } else if (_lifecycle.equals(PortletRequest.RENDER_PHASE)) {

Creating the Resource URL Liferay's default uses the resource url for ajax requests          <portlet:resourceURL id="addResource" var="addResourceURL">         </portlet:resourceURL> Creating the Ajax function creating the Jquery  ajax function function <portlet:namespace/>getEntries(){                 var url = "${addResourceURL}";                         $.ajax({                                 type : "POST",                                 url : url,                                 dataType : "JSON",                 ...

    In rare it may happens, you have to submit the form with out refresh the page (actionURL ) and save the parameters in the DB.    Jus Copy the below code , Here i am using alloy UI to submit the form and here not need to append any parametrs to the URL .you will get the parameters values from request parameters. <portlet:actionURL var="formsubmissionURL" /> <aui:script use="aui-io-request,aui-node" > Liferay.provide(window,'submitForm', function() { var A = AUI(); A.io.request('${formsubmissionURL}',{ method: 'POST', form: { id: '<portlet:namespace />fm' }, on: { success: function(){     }   }   });   }); </aui:script > <aui:form action="#" method="POST" id="fm" name="fm" >      <aui:input type="text" name="name"/>      <aui:button type="submit" value="Save" /...