If you want to generate the URL yourself and want to keep using the code you
have already written, use a WebComponent instead of an Image:
WebComponent dynamicImage = new WebComponent("image");
dynamicImage.add(new AttributeModifier("src", true, new
AbstractReadOnlyModel() {} ) );
Otherwise, as suggested by the previous reply, look into
DynamicImageResource.
bassglider wrote:
>
> Hi Everyone,
>
> I am attempting to load an image that takes some time. I can load a
> remote image using the URL, but when it takes time to gather the data
> and then get the url, I get this:
>
> [java] 11174 [btpool0-1] ERROR org.apache.wicket.RequestCycle -
> Exception in rendering component: [Component id = image]
> [java] org.apache.wicket.WicketRuntimeException: Exception in
> rendering component: [Component id = image]
> [java] at
> org.apache.wicket.Component.renderComponent(Component.java:2656)
> [java] at
> org.apache.wicket.markup.html.WebComponent.onRender(WebComponent.java:62)
> [java] at org.apache.wicket.Component.render(Component.java:2448)
>
>
> I read that it could be from the thread expiring or the page trying to
> modify itself after it is rendered(?)
>
> So I tried adding this to my Application
>
> @Override
> protected void init() {
> super.init();
>
> //remove thread monitoring from resource watcher
> this.getResourceSettings().setResourcePollFrequency(null);
> }
>
>
> It had no effect on the issue. Any suggestions or remedies would be
> greatly appreciated.
>
> Here is the code I am using:
>
>
> Image dynamicImage = new Image("image");
> dynamicImage.add(new AttributeModifier("src", true, new
> AbstractReadOnlyModel() {
>
> private static final long serialVersionUID = 1L;
>
> /**
> * {...@inheritdoc}
> */
> @Override
> public final Object getObject() {
> GoogleChart chart = new GoogleChart("http://xxxxxx:xxxx/xxxxx/";);
> String url = chart.getChart ("value", "2009-11-15"," 2009-11-15",
> "xxxxxxxx", "july", true, false );
> System.out.println("GETCHART URL: " + url);
> //String url = "http://xxxxxx/PleaseStandBy.jpg";;
> return url;
> }
> }));
> dynamicImage.setOutputMarkupId(true);
> add(dynamicImage);
>
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![http://xxxxxx/PleaseStandBy.jpg"](http://xxxxxx/PleaseStandBy.jpg"){kind=link}