authorityinterceptor.java

Spring2.0宝典

package lee;

import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;

/**
 * @author  yeeku.H.lee [e-mail]
 * @version  1.0
 * <br>Copyright (C), 2005-2008, yeeku.H.Lee
 * <br>This program is protected by copyright laws.
 * <br>Program Name:
 * <br>Date: 
 */
public class AuthorityInterceptor implements MethodInterceptor
{
    private String user;

    public void setUser(String user)
    {
        this.user = user;
    }
 
    public Object invoke(MethodInvocation invocation) throws Throwable
	{
        String methodName = invocation.getMethod().getName();

        if (!user.equals("admin") && !user.equals("registedUser"))
        {
            System.out.println("您无权执行该方法");
            return null;
        }
        else if (user.equals("registedUser") && methodName.equals("modify"))
        {
            System.out.println("您不是管理员，无法修改数据");
            return null;
        }
        else
        {
            return invocation.proceed();
        }
    }
}