storefrontdispatchaction.java

《基于Eclipse的开源框架技术与实战》[第5章]随书源码

package com.free.struts.storefront.framework;

import javax.servlet.http.*;

import com.free.struts.storefront.framework.util.IConstants;
import com.free.struts.storefront.service.IStorefrontService;
import com.free.struts.storefront.service.IStorefrontServiceFactory;

import org.apache.struts.actions.DispatchAction;

/**
 * <p>Title: Eclipse Plugin Development</p>
 * <p>Description: Free download</p>
 * <p>Copyright: Copyright (c) 2006</p>
 * <p>Company: Free</p>
 * @author gan.shu.man
 * @version 1.0
 */

public class StorefrontDispatchAction extends DispatchAction {

  protected IStorefrontService getStorefrontService(){
    IStorefrontServiceFactory factory = (IStorefrontServiceFactory)getApplicationObject( IConstants.SERVICE_FACTORY_KEY );
    IStorefrontService service = null;
    try{
      service = factory.createService();
    }catch( Exception ex ){
      log.error( "Problem creating the Storefront Service", ex );
    }
    return service;
  }

  /**
   * Retrieve an object from the application scope by its name. This is
   * a convience method.
   */
  protected Object getApplicationObject(String attrName) {
    return servlet.getServletContext().getAttribute(attrName);
  }

  /**
   * Retrieve the UserContainer for the user tier to the request.
   */
  protected UserContainer getUserContainer(HttpServletRequest request) {
    UserContainer userContainer = (UserContainer)getSessionObject(request, IConstants.USER_CONTAINER_KEY);

    System.out.println( userContainer );

    // Create a UserContainer for the user if it doesn't exist already
    if(userContainer == null) {
      userContainer = new UserContainer();
      userContainer.setLocale(request.getLocale());
      HttpSession session = request.getSession();
      session.setAttribute(IConstants.USER_CONTAINER_KEY, userContainer);
    }
    return userContainer;
  }

  /**
   * Retrieve a session object based on the request and the attribute name.
   */
 protected Object getSessionObject(HttpServletRequest req,
                                    String attrName) {
    Object sessionObj = null;
    HttpSession session = req.getSession(false);
    System.out.println( "Session was " + session );
    if ( session != null ){
       sessionObj = session.getAttribute(attrName);
    }
    return sessionObj;
  }
}