You can inject the injector, if you really want to:
http://code.google.com/p/google-guice/wiki/ServletRegexKeyMapping#Injecting_the_injector
However, I find that this breaks down the abstraction that Guice
provides. I like for my servlet modules to install other modules that
are required for the servlet to run:
public class ContainerModule extends ServeletModule {
protected void configureServlets() {
install(new DatabaseModule());
install(new LoggingModule());
install(new ApplicationModule());
serve("/pattern").with(MyServlet.class);
}
}
If you have multiple servlets, then you can have multiple servlet
modules, that are all injected by a top-level "server" module (which
doesn't even need to be a ServetModule) that manages all the bindings
that are either shared or should only happen once per server, such as
JNDI, etc.
Some people don't like cross-module dependencies, so you might not
like this approach, but I find it easier to reason about, and you can
always enforce your cross-module dependencies by checking the results
of Binder.getProvider() in a Module's configure method.
HTH,
Christopher
On Fri, Apr 29, 2011 at 11:33 AM, Christopher Piggott
<[email protected]> wrote:
> I've been taking related resources and grouping them ... and creating
> multiple modules for various things, to keep them more "together" as a
> functional unit that can be added or removed. I then create my
> Injector with:
>
> injector = Guice.createInjector(new MainServletModule(),
> new ResourceModule1(),
> new OtherModule1(),
> new ResourceModule2());
>
> etc.
>
> I find it helps me to keep things straight by keeping the module in
> the same package as all the things being bound.
>
> I think it's really a matter of personal taste, but this approach has
> made me happier.
>
> --C
>
>
>
> On Fri, Apr 29, 2011 at 2:21 PM, garey <[email protected]> wrote:
>> Hi -
>>
>> Still trying to figure out the best way to use Guice writing
>> webapps. Should I put my bindings, for example a JNDI connection
>> provider, into the servlet module, or should I write another module
>> for that type of bind? And if I do, how should I provide the injector
>> for that module to my servlets?
>>
>>
>> Or am I completely confused?
>>
>> Garey Mills
>>
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