Wicket: Relative to absolute URL or get base URL

Question

If I have a relative path to a static asset (flash/blah.swf), what is the best way to programmatically convert this to an absolute URL (http://localhost/app/flash/blah.swf)? Or what is the best way to get the base URL of the Wicket application? I've tried using RequestUtils.toAbsolutePath but it doesn't seem to work reliably and is frequently throwing exceptions. This needs to work on all servers the app is deployed to.

Manuel Manhart · Answer 1 · 2013-06-20T10:14:19.477

13

For Wicket 6 it is

String absoluteUrl = RequestCycle.get().getUrlRenderer().renderFullUrl(Url.parse("my-relative-url.html"));

edited Jun 20 '13 at 10:14

answered Jun 19 '13 at 15:32

Manuel Manhart

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And base URL is `String baseUrl = RequestCycle.get().getUrlRenderer().getBaseUrl().toString()` – Brad M Oct 22 '14 at 20:53

score 8 · Accepted Answer · edited Nov 28 '11 at 21:26

8

RequestUtils.toAbsolutePath(RequestCycle.get().getRequest().
  getRelativePathPrefixToWicketHandler());

worked for me.

edited Nov 28 '11 at 21:26

Pops

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answered Oct 11 '10 at 14:33

Richard Noble

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Note that this doesn't work in Wicket 1.5, which has no single arg `toAbsolutePath` – Duncan McGregor Jan 18 '12 at 12:11

score 1 · Answer 3 · edited Aug 14 '13 at 18:55

1

For Wicket 1.5 there is information here

edited Aug 14 '13 at 18:55

Don Roby

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answered Jan 18 '12 at 12:14

Duncan McGregor

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score 0 · Answer 4 · answered Apr 13 '10 at 00:19

org.apache.wicket.protocol.http.servlet.ServletWebRequest has a method getRelativePathPrefixToContextRoot() (actually defined as abstract in a superclass).

A standard idiom for using it is

RequestCycle.get().getRequest().getRelativePathPrefixToContextRoot() + location;

score 0 · Answer 5 · answered Apr 13 '10 at 03:50

I ended up using something like this after adding a base_url property to my MyApplication class that extends the wicket application.

MyApplication app = (MyApplication)getApplication();
String appBaseUrl = app.getBaseUrl(); 
if (StringUtils.isEmpty(appBaseUrl)) { 
    appBaseUrl = RequestUtils.toAbsolutePath(urlFor(app.getHomePage(), new PageParameters()).toString());
    app.setBaseUrl(appBaseUrl); 
} 

// Add base URL to <script wicket:id="base_url"></script> to use with Flash
add(new Label("base_url", "base_url = \"" + appBaseUrl + "\";").setEscapeModelStrings(false));

Wicket: Relative to absolute URL or get base URL

5 Answers5