Making Ajax request in portlets for liferay 6

Question

I want to make an ajax call inside my jsp file which calls processAction method of a portlet, based on the success message from processAction method i need to make another call to serveResource method of portlet,please provide some examples..

Answer 1

This question worked for me.

Basically, the Controller

@Controller
@RequestMapping("VIEW") // VIEW mapping (as opposed to EDIT)
public class MyPortlet {
    @RenderMapping
    public String handleRenderRequest(RenderRequest request, RenderResponse response) {
        return "defaultRender";
    }

    @ResourceMapping("myURL")
    public void handleMyResource(ResourceRequest request, ResourceResponse response) {
        OutputStream outStream;
        try {
            outStream = response.getPortletOutputStream();
            ObjectMapper mapper = new ObjectMapper();

            mapper.writeValue(outStream, "Hello world!");
        } catch (IOException ex) {
            // TODO : Do something with errors.
        }
    }
}

And the JSP:

<portlet:resourceURL id="myURL" var="myURL"/>

<script type="text/javascript">
    var urlink = "<%= myURL %>";
    $.ajax({
        url: urlink,
        cache: false,
        type: "POST",
        success: function(jsondata) {
            console.log(jsondata);
        }
    });
</script>

Answer 2

In portlets, processAction() methods are automatically followed by render method and hence ajax response will get embedded with HTML fragment generated by render method. So writing ajax in portlets is a bit tricky.

Have a look at this blog of mine.

http://ajax-and-portlets.blogspot.com/2011/09/ajax-best-practice-in-portlets.html

It gives an insight view of what's the best practice to implement ajax in portlets (for both JSR-168 and JSR-286 portlets).

In case you want sample portlets, you can contact me through the contact details from the blog. I'll be happy to help you.

Thanks Jignesh