Dobry den,
Skusil som to nacrtnut ako by to mohlo byt riesene cez reflection API,
ale pripominam ze trebalo by tam viacej veci podotahovat, hlavne teda
krajsie vytvaranie instancii (Foo) a implementovat isUserInRole, ale
princip je tam zachyteny.
Osobne by som sa priklonil za to Acegi ako sme to tu uz viac krat spominali.
<code>
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
public class MethodInvoker
{
public static void main(String[] argv) {
MethodInvoker mi = new MethodInvoker();
mi.test();
}
public void test()
{
InvocationHandler handler = new FacadeInvocationHandler(new
Foo());
IFoo f = (IFoo) Proxy.newProxyInstance(Foo.class.getClassLoader(),
new Class[] { IFoo.class }, handler);
f.call();
}
/**
* Very simple facade which delegates all calls to a target object.
*/
private static class FacadeInvocationHandler implements InvocationHandler
{
Object facaded;
public FacadeInvocationHandler(Object facaded)
{
this.facaded = facaded;
}
public Object invoke(Object proxy, Method method, Object[] args)
throws Throwable
{
if(isUserInRole()) {
return method.invoke(facaded, args);
} else {
return null;
}
}
}
private static boolean isUserInRole() {
return true;
}
interface IFoo {
public void call();
}
class Foo implements IFoo
{
public void call() {
System.out.print("Called");
}
}
}
</code>
Martin Krajci
Kamzik-II wrote:
Mohl byste uvest nejaky priklad?
Tohle reseni by mozna bylo ono, ale
nedovedu si predstavit realizaci, jak by to zhruba fungovalo?
----- Original Message -----
From: "Martin Krajci" <[EMAIL PROTECTED]>
To: "Java" <konference@java.cz>
Sent: Thursday, July 20, 2006 1:19 PM
Subject: Re: security
Dobry den,
Nie som si isty ci JEE alebo JSE nieco maju, ale vsak si to mozete sam
naprogramovat pomocou java reflection API.
Martin Krajci
Kamzik-II wrote:
Takze bez nejakeho frameworku treti strany to nejde?
----- Original Message -----
From: "Martin Krajci" <[EMAIL PROTECTED]>
To: "Java" <konference@java.cz>
Sent: Thursday, July 20, 2006 10:43 AM
Subject: Re: security
Dobry den,
Pozrite si http://www.acegisecurity.org/ a konkretne 'method
invocation
security'. Acegi sa da pouzit aj bez Springu aby ste toho nemali na
zaciatok moc.
Martin Krajci
Kamzik-II wrote:
Zdravicko lidi,
Potreboval byh poradit :)
Rekneme, ze mam tridu "Xyz", která
obsahuje mimo jiné i metodu "necoUdelej".
Treba takhle:
public class Xyz
{
public void necoUdelej ()
{
System.out.println ( "Hotovo" );
}
}
A potreboval bych nejak zajistit, aby se ta metoda provedla
jenom pokud je pouzita v aplikaci, ktera je spustena, s nejakymi
pravy, jinak aby vyhodila SecurityException...
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