Re: Why is Shiro assuming that you already have a server running?

[Jared Bunting]

Basically, it is assuming that because that was the use case I was 
working with.  I have added SHIRO-401 
(https://issues.apache.org/jira/browse/SHIRO-401) to allow the passing 
of a provider, which should enable your use case.

In the meantime, there are a couple of options.

1. Copy ShiroWebModule into your project and change it.
2. Write an implementation of the ServletContext interface that 
deletages all of its calls to "provider.get()".  Pass that 
implementation

Neither is particularly attractive, I know.  I've included my first 
thoughts at implementing #2.

Thanks,
Jared

PS.  Could you share how you are using Guice to create the Jetty server 
with Shiro?  I think this would be an interesting sample to add to the 
project.



import com.google.inject.Provider;

import javax.servlet.ServletContext;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;

public class ServletContextProxy implements InvocationHandler {
    private final Provider<ServletContext> contextProvider;

    public ServletContextProxy(Provider<ServletContext> 
contextProvider) {
        this.contextProvider = contextProvider;
    }

    public Object invoke(Object proxy, Method method, Object[] args) 
throws Throwable {
        return method.invoke(contextProvider.get(), args);
    }

    public static ServletContext 
createInstance(Provider<ServletContext> contextProvider) {
        return (ServletContext) 
Proxy.newProxyInstance(contextProvider.getClass().getClassLoader(), new 
Class[]{ServletContext.class}, new 
ServletContextProxy(contextProvider));
    }
}


On Wed 05 Dec 2012 08:00:39 AM CST, mircea wrote:
> Hello,
>
> I'm wondering why is SHIRO assuming that the Guice injector must be created
> after the server (in my case Jetty) is created.
>
> You can only use Shiro after the ServletContext is available. I think this
> is a wrong assumption because you can also use Guice to wire the entire
> application, including the server. This means the ServletContext is not
> available at the injector creation time. So, no out-of-the-box solution in
> this case.
>
> How could I solve this problem? How can I initialize Shiro in a web
> application which is using Guice for the server creation?
>
> Thanks,
>
>
>
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