All entries for Wednesday 10 August 2005

August 10, 2005

spring rocks ;) Filters + DI solved!

Writing about web page

So I have a couple of filters which need access to spring beans. Previously I was doing something like:

protected final void initFilterBean() throws ServletException {
WebApplicationContext wac = WebApplicationContextUtils.getRequiredWebApplicationContext(getServletContext());
pageResolver = (PageResolver) wac.getBean("pageResolver");

which was a bit fragile. Anyways, spring allows you to define filters in your applicationContext, complete with DI ;)

in web.xml:


Spring will then look for a bean called loadPageFilter in the applicationContext and delegate to that. And of course, you can specify the actual bean name (instead of using the filter-name).


P.S. Someone asked me how to do this and I forgot I had blogged about it, I redid this here: link

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