searchaction.java

ShoppingOnline 是一个网上购物系统的源代码 由eclipse+jsp+tomcat+strust

package cn.com.shoppingonline;

import java.util.ArrayList;
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 SearchAction extends Action{  
	public ActionForward execute(
		ActionMapping mapping,
		ActionForm form,
		HttpServletRequest request,  
		HttpServletResponse response) throws Exception {
	
   		DynaActionForm searchForm = (DynaActionForm) form;         
		Integer 	sortId = (Integer)searchForm.get("sortId");
		String keyword = (String)searchForm.get("keyword");
		Integer pageId = (Integer)searchForm.get("pageId");
		
		int pageCount = 0;
		int iPageId = 0;
		if (pageId!=null) iPageId = pageId.intValue();
		if (iPageId<0) iPageId = 0;
		String PageForward="toListMain";
		ActionMessages errors = new ActionMessages();
		
		List productList=new DbOperate().getMatchProducts(sortId.intValue(),keyword);
	
	    HttpSession session = request.getSession(true);
		/*
		 * 没有搜索到商品处理
		 */
	    if (productList.size()==0){
    			errors.add(ActionMessages.GLOBAL_MESSAGE,
    						new ActionMessage("errors.noProduct"));
    			if (!errors.isEmpty()) {
    				saveErrors(request, errors);
    			} 
    			PageForward="toWrong";  
		}
	    /*
	     * 获取总页数
	     */
	    if (productList.size()%Constants.PRODUCT_PAGE_SIZE ==0){
			pageCount=productList.size() / Constants.PRODUCT_PAGE_SIZE;
		}
	    else{
	    	pageCount=productList.size() / Constants.PRODUCT_PAGE_SIZE+1;
	    }
	    /*
	     * 分页显示
	     */
	    if ((productList.size()>iPageId * Constants.PRODUCT_PAGE_SIZE )&&(iPageId>=0)){
	    	List  dispList=new ArrayList();
	    	for (int i=iPageId*Constants.PRODUCT_PAGE_SIZE;i<(iPageId+1)*Constants.PRODUCT_PAGE_SIZE;i++){
				if (i<productList.size()){
					dispList.add(productList.get(i));
				}
	    	}
			session.setAttribute(Constants.SEARCH_PRODUCT_LIST_KEY,dispList);
			session.setAttribute(Constants.CUR_PAGEID_KEY,new Integer(iPageId));
			session.setAttribute(Constants.PAGE_COUNT_KEY,new Integer(pageCount));
			session.setAttribute(Constants.CUR_SORTID_KEY,sortId);
			session.setAttribute(Constants.CUR_KEYWORD_KEY,keyword);
   			PageForward="toListMain";  
	    }
	
	   	return (mapping.findForward(PageForward));					
 	}

}