Re: Extend session metadata with user-data-scope after login (spring question)

[Sven Meier]

Hi,

Wicket tries to create a proxy for your bean.
Apparently UserScopeFinder doesn't have a default constructor, which is 
required for creation of a proxy class.
Easiest solution is to introduce an interface (e.g. IUserScopeFinder) 
and let your bean implement that:

    @SpringBean(name = "userScopeFinder")
    private IUserScopeFinder userScopeFinder;

Hope this helps
Sven


On 07.03.21 09:58, Per Newgro wrote:
Hi,

i would like to extend a session (metadata) with scope of user logged in. Something like 
"allowed countries", "allowed companies" and so on.
That scope is provided by a spring bean (UserScopeFinder). This bean is created 
in a Configuration as a @Bean.

What i tried so far is add an ISessionListener to WebApplication and inject the 
UserScopeFinder.

<code>
@com.giffing.wicket.spring.boot.context.extensions.ApplicationInitExtension
public class AuthorizationInitializer implements 
com.giffing.wicket.spring.boot.context.extensions.WicketApplicationInitConfiguration
 {

        @Override
        public void init(WebApplication webApplication) {
                IAuthorizationStrategy strategy;
                strategy = new ApplicationAuthorizationStrategy(new 
UserRolesAuthorizer());
                
webApplication.getSecuritySettings().setAuthorizationStrategy(strategy);
                webApplication.getSessionListeners().add(new 
UserScopeInjector());
        }
}

public class UserScopeInjector implements ISessionListener {

        @SpringBean(name = "userScopeFinder")
        private UserScopeFinder userScopeFinder;

        public UserScopeInjector() {
                super();
                Injector.get().inject(this);
        }

        @Override
        public void onCreated(Session session) {
                System.out.println("Works");
        }
}
</code>

But in that case i get:

<error>
...
Caused by: java.lang.RuntimeException: error while injecting object 
[my.app.core.wicket.authorization.UserScopeInjector@283465af] of type 
[my.app.core.wicket.authorization.UserScopeInjector]
        at org.apache.wicket.injection.Injector.inject(Injector.java:122)
        at 
org.apache.wicket.spring.injection.annot.SpringComponentInjector.inject(SpringComponentInjector.java:124)
        at 
my.app.core.wicket.authorization.UserScopeInjector.<init>(UserScopeInjector.java:17)
        at 
my.app.core.wicket.authorization.AuthorizationInitializer.init(AuthorizationInitializer.java:19)
        at 
com.giffing.wicket.spring.boot.starter.app.WicketBootSecuredWebApplication.init(WicketBootSecuredWebApplication.java:83)
        at org.apache.wicket.Application.initApplication(Application.java:762)
        at 
org.apache.wicket.protocol.http.WicketFilter.init(WicketFilter.java:441)
        ... 47 common frames omitted
Caused by: java.lang.IllegalArgumentException: Superclass has no null 
constructors but no arguments were given
        at net.sf.cglib.proxy.Enhancer.emitConstructors(Enhancer.java:931)
        at net.sf.cglib.proxy.Enhancer.generateClass(Enhancer.java:631)
        at 
net.sf.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25)
        at 
net.sf.cglib.core.AbstractClassGenerator.generate(AbstractClassGenerator.java:332)
        at net.sf.cglib.proxy.Enhancer.generate(Enhancer.java:492)
        at 
net.sf.cglib.core.AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:96)
        at 
net.sf.cglib.core.AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:94)
        at net.sf.cglib.core.internal.LoadingCache$2.call(LoadingCache.java:54)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at 
net.sf.cglib.core.internal.LoadingCache.createEntry(LoadingCache.java:61)
        at net.sf.cglib.core.internal.LoadingCache.get(LoadingCache.java:34)
        at 
net.sf.cglib.core.AbstractClassGenerator$ClassLoaderData.get(AbstractClassGenerator.java:119)
        at 
net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:294)
        at net.sf.cglib.proxy.Enhancer.createHelper(Enhancer.java:480)
        at net.sf.cglib.proxy.Enhancer.create(Enhancer.java:305)
        at 
org.apache.wicket.proxy.LazyInitProxyFactory.createProxy(LazyInitProxyFactory.java:191)
        at 
org.apache.wicket.spring.injection.annot.AnnotProxyFieldValueFactory.getFieldValue(AnnotProxyFieldValueFactory.java:166)
        at org.apache.wicket.injection.Injector.inject(Injector.java:111)
        ... 53 common frames omitted
</error>

I'm a little bit lost, if my strategy is working in common. Has someone maybe 
an example for me?

Thanks for your support
Per

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