Add listener constructor

[Sineaggi]

This allows for code such as

Server server = new Server(8080);
ServletContextHandler contextHandler = new  ServletContextHandler(ServletContextHandler.SESSIONS);
AnnotationConfigWebApplicationContext rootContext = new AnnotationConfigWebApplicationContext();
rootContext.register(AppConfig.class);
contextHandler.addEventListener(new ResteasyBootstrap());
contextHandler.addEventListener(new SpringContextLoaderListener(rootContext));
contextHandler.addServlet(HttpServletDispatcher.class, "/*");
server.setHandler(contextHandler);
server.start();
server.join();

to be used inside of a servlet 3.0 container such as the Jetty server, without requiring web.xml and applicationContext.xml files.

[Sineaggi]

Whoops, I just checked the pom file. The resteasy-spring project uses Spring 3.0.6.RELEASE as it's spring version, whereas I'm testing with 4.3.3. Is there a plan to bump spring version numbers?

[asoldano]

@Sineaggi we'll eventually upgrade to a more recent spring version in the future, not now though. What is the minimum requirement for your change here, Spring 4.3.0?

[Sineaggi]

@asoldano I've just tested, Spring 4.0.0 Spring 3.1.0 is the minimum requirement. I can try to investigate if we could add a method that sets the WebApplicationContext, while not requiring a constructor-based invocation. It would appear that AnnotationConfigWebApplicationContext is also available in Spring 3.x so it may be possible. If not, applicationContext.xml is a file alternative for the time being.

Edit: Just tested version numbers again, I was able to drop requirements as low as Spring 3.1.0.

[Sineaggi]

Not sure what the failing test is about.

Failed tests: 
  AsynchBasicTest.testAsynchTen:273 expected:<200> but was:<202>
Tests run: 1243, Failures: 1, Errors: 0, Skipped: 1

[Sineaggi]

Fixed, seems like it was a fluke.

[asoldano]

OK, thanks. Currently reasoning on the implications of spring upgrade, to decide when to merge this PR.

[asoldano]

OK, I've squashed your commits in a single one and merged upstream after having moved to Spring 3.1.0.RELEASE. Thanks!

[Sineaggi]

Thank you!

[UltimaPhoenix]

I hope that this time the pull request will not be reverted anymore, ref. my previous accepted and then reverted pull request #623 (2 Feb 2015)