bulletioninterceptor.java

有简单的网上书店需求及设计流程

package org.wiely.interceptor;

import java.util.Map;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.interceptor.AbstractInterceptor;

/**
 * Bulletion extends AbstractInterceptor
 * when update the bulletion ,you must be administrator,if
 * you aren'nt administrator,the page redirect the administrator slogin.jsp.
 */
@SuppressWarnings("serial")
public class BulletionInterceptor extends AbstractInterceptor {

	@SuppressWarnings("unchecked")
	@Override
	public String intercept(ActionInvocation invocation) throws Exception {
		Map session = ActionContext.getContext().getSession();

		if (session.get("admin") == null) {
			return "adminlogin";
		} else {
			return invocation.invoke();
		}

	}

}