viewproductaction.java

商店管理员程序 Java 实现对商品的管理

package cn.com.shopadmin;


import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;
import org.apache.struts.action.DynaActionForm;

public final class ViewProductAction extends Action{  
	public ActionForward execute(
		ActionMapping mapping,
		ActionForm form,
		HttpServletRequest request,  
		HttpServletResponse response) throws Exception {
	
   		DynaActionForm searchForm = (DynaActionForm) form;         
   		
   		String keyword = (String)searchForm.get("keyword");
		Integer pageId = (Integer)searchForm.get("pageId");
	    HttpSession session = request.getSession(true);
		//利用Hibernate获取匹配商品
		List productList=new DbOperate().getMatchProducts(keyword);
		/*
		 * 无符合条件对象
		 */
		if (productList.size()==0){           
			ActionMessages errors = new ActionMessages();
			errors.add(ActionMessages.GLOBAL_MESSAGE,
				new ActionMessage("errors.noMatch"));
			if (!errors.isEmpty()) {
				saveErrors(request, errors);
			} 
  			return  mapping.findForward("toWrong");  
		}
		else{
			//分页显示商品列表
			ViewList viewList=new ViewList();
			viewList.display (productList,session,pageId,keyword) ;
		   	return (mapping.findForward("toListProduct"));					
		}
 	}
}