How to get parameters from URL in Liferay portlet?

Question

I'm using jsp of out-of-box portlet like feed.jspf in Liferay 6:

String articleId =null;
HttpServletRequest httpReq = PortalUtil.getOriginalServletRequest(PortalUtil.getHttpServletRequest(renderRequest));
articleId = httpReq.getParameter("articleId");

It is giving a null value whether in custom portlet or in .jsp files, but it should have a value.

Use RenderRequest request = (RenderRequest) FacesContext.getCurrentInstance().getExternalContext().getRequestMap().get("javax.portlet.request"); to get the RenderRequest — frandevel, Oct 30 '11 at 21:24

score 10 · Accepted Answer · answered Feb 08 '11 at 14:01

10

Sure, you can always use the standard HttpServletRequest to retrieve your parameters from. You can get this request by using the PortalUtil class, like in the following example:

HttpServletRequest request = PortalUtil.getHttpServletRequest(portletRequest);
String articleId = request.getParameter("articleId");

answered Feb 08 '11 at 14:01

FoX

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http://stackoverflow.com/questions/39233585/different-jsp-rendering-in-liferay/39245456#39245456 Could you please look at my thread on the same theme and say if I can use same solution? – Al.Boldyrev Aug 31 '16 at 12:35

score 8 · Answer 2 · answered Aug 03 '12 at 12:45

In my Liferay- JSP I use this:

<!-- ... some imports... -->
<!-- ... some more imports... -->
<%@ page import="com.liferay.portal.util.PortalUtil" %>

<portlet:defineObjects /> <!-- Liferay-specific, defines renderRequest etc.-->

<%
    HttpServletRequest r = PortalUtil.getHttpServletRequest(renderRequest);
    String wellHole =  PortalUtil.getOriginalServletRequest(r).getParameter("well_hole");

%>

(this combines fragments of wisdom from other answers, notably Miguel Gil Martínez's answer from 2012 Jul 23 at 17:35

is it possible to get it using JSTL or EL? – Serg Shapoval Jun 14 '17 at 09:41 — Serg Shapoval, Jun 14 '17 at 09:41

score 2 · Answer 3 · edited Jul 23 '12 at 17:46

2

It worked for me:

public void doView(RenderRequest request, RenderResponse response) throws 
  PortletException, IOException {

HttpServletRequest requestInsideThePortlet = PortalUtil.getHttpServletRequest(request);

String myURLParam =
 PortalUtil.getOriginalServletRequest(requestInsideThePortlet).getParameter("myURLParam");

....
....
....
}

edited Jul 23 '12 at 17:46

Dungeon Hunter

19,827
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answered Jul 23 '12 at 17:35

Miguel Gil Martínez

520
4
8

score 2 · Answer 4 · answered Feb 07 '11 at 14:02

When working with portlets, each HttpServletRequest paramenter has a prefix which informs the "type" of the parameter and a suffix expressing which instance of the portlet should process it. So, the name of the parameters is not just "articleId". I do not know what portlet are you working but if it was a portlet called, let's say, "example" deployed through a war the parameter would be called example_WAR_exampleportletwar_articleId_w2Xd.

However, you do not have to deal with such complexity. If you are working within a JSP of some already created portlet, there should be an object called renderRequest which contains all parameters and abstracts all this name mangling. So, instead of retrieving the original servlet requestion you an use it:

String articleId = renderRequest.getParamenter("articleId");

If this object is not defined, you just need to insert the <portlet:defineObjects/> tag somewhere and after this the object will be available.

HTH. Let us know if it worked!

ya that is right but i want to get articleId from url ...like http://localhost:8080/author-detail?articleId=12345...can i get that in portlet ..jsp page??? — Mayur Patel, Feb 07 '11 at 19:13
So, does the URL parameter have no prefix or suffix, right? I do not know how to get it (I'd suggest to do what you tried anyway, hoping it works) but I wonder how this paramenter is set. How is it defined? Is it in some portlet/hook made by you? — brandizzi, Feb 07 '11 at 20:44
From one of my custom portlet in liferay ...i'm calling other page by defining the name of the page and passing parameters manually...after it will redirect to author-detail page..in that i hv one portlet ..i hv to access articleId in that??.... — Mayur Patel, Feb 09 '11 at 04:44

score 1 · Answer 5 · answered Nov 20 '14 at 19:17

For JSF I use this:

@ManagedBean
@RequestScoped
public class OriginalRequest {
    private HttpServletRequest getOriginalRequest() {
        return PortalUtil.getOriginalServletRequest(
                PortalUtil.getHttpServletRequest(
                        (PortletRequest) FacesContext.getCurrentInstance()
                                .getExternalContext().getRequest() ) );
    }

    public String getParam( String name ) {
        return getOriginalRequest().getParameter( name );
    }

    public List<String> getParamNames() {
        return Collections.list( getOriginalRequest().getParameterNames() );
    }
}

Then in your facelet:

#{originalRequest.getParam('my_param')}

score 0 · Answer 6 · answered Mar 10 '11 at 23:32

I tried ur solutions but render request it gives me an exception, so this is another solution:

public String obtainFromUrl(String keyFromWeb) {

    Object outcome = null;
    Map<String, Object> map = FacesContext.getCurrentInstance().getExternalContext().getRequestMap();
    if (map != null) {
        for (String key : map.keySet()) {
            if (map.get(key) instanceof HttpServletRequestWrapper) {
                HttpServletRequest request = (HttpServletRequest) ((HttpServletRequestWrapper) map.get(key))
                        .getRequest();
                outcome = request.getParameter(keyFromWeb);
                break;
            }
        }
    }
    return (String) outcome;

}

How to get parameters from URL in Liferay portlet?

6 Answers6

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