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indeed, I tried to use Johannes code, and it seemed to work well, but
@MultipartConfig was not
recognized. I used WebAppContext instead of ServletContextHandler, but this
didn't do the trick:
WebAppContext contextHandler = new WebAppContext();
contextHandler.setContextPath("/");
contextHandler.setResourceBase(".");
server.setHandler(contextHandler);
// unnecessary, servlet will be started during annotation scanning
// contextHandler.addServlet(new ServletHolder(new
ExampleDispatcherServlet()), "/*");
Set<AnnotationParser.Handler> handlers = new HashSet<>();
handlers.add(new WebServletAnnotationHandler(contextHandler));
handlers.add(new WebFilterAnnotationHandler(contextHandler));
handlers.add(new WebListenerAnnotationHandler(contextHandler));
AnnotationParser annotationParser = new AnnotationParser();
annotationParser.parse(handlers,
ExampleDispatcherServlet.class.getName(), new
ClassNameResolver()
{
@Override
public boolean shouldOverride(String name)
{
return false;
}
@Override
public boolean isExcluded(String name)
{
return false;
}
});
server.start();
The @WebInitParams were recognized, the servlet was loaded on startup. But no
Multipart support.
What will do the trick? I could manually add Multipart support with this hack:
WebAppContext contextHandler = new WebAppContext()
{
@Override
public void doHandle(String target, Request baseRequest, HttpServletRequest
request,
HttpServletResponse response) throws IOException, ServletException
{
String contentType = request.getHeader("Content-Type");
if(contentType != null && contentType.startsWith("multipart/form-data"))
{
baseRequest.setAttribute(Request.__MULTIPART_CONFIG_ELEMENT, new
MultipartConfigElement(System.getProperty("java.io.tmpdir")));
}
super.doHandle(target, baseRequest, request, response);
}
};
but it doesn't feel like a final solution.
by the way - is it planed to scan servlet 3.0 annotations by Jetty inside the
addServlet(..)
methods in the future? It's a gap, isn't it?
Christian
On 16.01.2015 16:50, Joakim Erdfelt wrote:
> Traditionally annotation scanning is part of the WebApp layer. Embedded Jetty
> focuses on direct
> declarations.
>
> Johannes Brodwall's solution is creative, but only addresses a small subset
> of what, and how,
> annotations can be wired up. (which might be sufficient in most cases)
> Examples: * There's no
> good way to handle @HandlesType and ServletContainerInitializer his way. *
> There's no support
> for @MultipartConfig without a WebAppContext.metadata to hold that
> information * There's no
> support for @ServletSecurity without a WebAppContext.metadata to hold that
> information
>
> Your example, however, uses @MultipartConfig, which is something that belongs
> in the
> WebAppContext's metadata. That information, found during annotation scanning,
> isn't retained in
> a ServletContextHandler.
>
>
> -- Joakim Erdfelt <[email protected] <mailto:[email protected]>> webtide.com
> <http://www.webtide.com/> - intalio.com/jetty <http://intalio.com/jetty>
> Expert advice,
> services and support from from the Jetty & CometD experts eclipse.org/jetty
> <http://eclipse.org/jetty/> - cometd.org <http://cometd.org/>
>
> On Fri, Jan 16, 2015 at 7:26 AM, Christian Reuschling
> <[email protected]
> <mailto:[email protected]>> wrote:
>
> Hi,
>
> we have no war file, nor some extra classpath, but simply want to add our
> servlet object
> instance to the embedded server, by taking it's servlet 3.0 parameters into
> account.
>
> All the documentation on Jetty, and all examples and snippets we found for
> embedded + servlet
> 3.0 annotations deals with specifying a war file or a classpath, which will
> be scanned by
> AnnotationConfiguration then.
>
> We tried a lot, but we were not able to do the same by simply adding the
> servlet with
> context.addServlet().
>
> Here is our code:
>
>
> Server server = new Server(iPort);
>
> // tried: ServletHandler handler = new ServletHandler(); // tried:
> WebAppContext contextHandler
> = new WebAppContext(); ServletContextHandler contextHandler = new
> ServletContextHandler();
> contextHandler.setContextPath("/");
>
> // tried: contextHandler.setConfigurations(new Configuration[] { //
> new
> AnnotationConfiguration() }); // tried:
> contextHandler.setConfigurationDiscovered(true);
>
> contextHandler.addServlet(new ServletHolder(new ExampleServlet()), "/*");
> server.setHandler(contextHandler);
>
> server.start();
>
>
> The Servlet is a simple HttpServlet with following annotations:
>
> @WebServlet(urlPatterns = { "/example/*" }, loadOnStartup = 1, initParams = {
> @WebInitParam(name = "name1", value = "val1"), @WebInitParam(name = "name2",
> value = "val2")
> }) @MultipartConfig(fileSizeThreshold = 1024*1024*10) public class
> ExampleServlet extends
> HttpServlet {....}
>
>
>
> How is it possible that the embedded Jetty server simply takes the
> annotations of the Servlet
> Object added to the server with context/handler.addServlet(..) into account,
> and nothing else,
> as the most simple scenario.
>
>
> Thanks for all answers!
>
> Christian
>
>
>
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- --
______________________________________________________________________________
Christian Reuschling, Dipl.-Ing.(BA)
Software Engineer
Knowledge Management Department
German Research Center for Artificial Intelligence DFKI GmbH
Trippstadter Straße 122, D-67663 Kaiserslautern, Germany
Phone: +49.631.20575-1250
mailto:[email protected] http://www.dfki.uni-kl.de/~reuschling/
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