struts+spring+hibernate的web应用 Web层代码编写(1)

Web 层代码量比较大，涉及的地方也比较多，考虑到文章过于庞大，所以分两篇写。
我们还是先从主要的 action 开始吧。

在 com.game.products.web.actions 包中新建 ProductsAction ，这是一个 DispatchAction ，代码如下：

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package  com.game.products.web.actions;

import  java.util.List;

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

import  org.acegisecurity.AccessDeniedException;
import  org.apache.struts.action.ActionForm;
import  org.apache.struts.action.ActionForward;
import  org.apache.struts.action.ActionMapping;
import  org.apache.struts.actions.DispatchAction;

import  com.game.commons.Pager;
import  com.game.commons.PagerService;
import  com.game.products.model.Products;
import  com.game.products.services.iface.ProductsService;
import  com.game.products.web.forms.ProductsForm;


public   class  ProductsAction  extends  DispatchAction  {
    
     private  ProductsService productsService;
     private  PagerService pagerService;
    
     /** */ /**  
     * 显示所有信息
      */
     public  ActionForward doGetProducts(
            ActionMapping mapping,
            ActionForm form,
            HttpServletRequest req,
            HttpServletResponse res) {
        String flag = req.getParameter( " flag " );
        
         int  totalRows = productsService.getRows();
        String currentPage = req.getParameter( " currentPage " );
        String pagerMethod = req.getParameter( " pagerMethod " );
        
        Pager pager = pagerService.getPager(currentPage, pagerMethod, totalRows);
        
        List productsList = productsService.getProducts(pager.getPageSize(), pager.getStartRow());
        
        req.setAttribute( " productsList " , productsList);
        req.setAttribute( " PAGER " , pager);
        req.setAttribute( " flag " , flag);
        req.setAttribute( " totalRows " , String.valueOf(totalRows));
        
         return  mapping.findForward( " all " );
    }
    
     /** */ /**  
     * 显示一条信息
      */
     public  ActionForward doGetProduct(
            ActionMapping mapping,
            ActionForm form,
            HttpServletRequest req,
            HttpServletResponse res) {
        String flag = req.getParameter( " flag " );
        String gameId = req.getParameter( " gameId " );
        String fieldname = "" ;
        String value = "" ;
         if (flag.equals( " 2 " )) {
            fieldname = (String)req.getParameter( " fieldname " );
            value = (String)req.getParameter( " value " );
            req.setAttribute( " fieldname " , fieldname);
            req.setAttribute( " value " , value);
        }
        
        Products pd = productsService.getProduct(gameId);
        req.setAttribute( " pd " , pd);
        req.setAttribute( " flag " , flag);
         return  mapping.findForward( " one " );
    }
    
     /** */ /**  
     * 添加信息页面
      */
     public  ActionForward doAddProductPage(
            ActionMapping mapping,
            ActionForm form,
            HttpServletRequest req,
            HttpServletResponse res) {
        String flag = req.getParameter( " flag " );
        req.setAttribute( " flag " , flag);
        String fieldname = "" ;
        String value = "" ;
         if (flag.equals( " 2 " )) {
            fieldname = (String)req.getParameter( " fieldname " );
            value = (String)req.getParameter( " value " );
            req.setAttribute( " fieldname " , fieldname);
            req.setAttribute( " value " , value);
        }
        
        String maxid = productsService.getMaxID();
        req.setAttribute( " maxid " , maxid);
         return  mapping.findForward( " add " );
    }
    
     /** */ /**  
     * 添加信息
      */
     public  ActionForward doAddProduct(
            ActionMapping mapping,
            ActionForm form,
            HttpServletRequest req,
            HttpServletResponse res) {
        ProductsForm pf = (ProductsForm)form;
        String flag = pf.getFlag();
        req.setAttribute( " flag " , flag);
        String fieldname = "" ;
        String value = "" ;
         if (flag.equals( " 2 " )) {
            fieldname = pf.getFieldname();
            value = pf.getValue();
            req.setAttribute( " fieldname " , fieldname);
            req.setAttribute( " value " , value);
        }
        
        Products pd = new  Products();
        pd.setGameCapacity(pf.getGameCapacity());
        pd.setGameId(pf.getGameId());
        pd.setGameMedia(pf.getGameMedia());
        pd.setGameNameCn(pf.getGameNameCn());
        pd.setGameNameEn(pf.getGameNameEn());
        pd.setGameVersion(pf.getGameVersion());
        pd.setGameCopyright(pf.getGameCopyright());
        pd.setGameContent(pf.getGameContent());
         if (pf.getGamePrice().equals( "" )) {
            pd.setGamePrice( null );
        } else {
            pd.setGamePrice(pf.getGamePrice());
        }
        
         int  sign = 1 ;
         try {
            productsService.addProduct(pd);
            sign = 1 ;
        } catch (Exception e) {
            sign = 2 ;
        }
        
         if (sign == 1 ) {
             return  mapping.findForward( " success " );
        } else {
             return  mapping.findForward( " failure " );
        }
    }
    
     /** */ /**  
     * 修改信息
      */
     public  ActionForward doUpdateProduct(
            ActionMapping mapping,
            ActionForm form,
            HttpServletRequest req,
            HttpServletResponse res) {
        ProductsForm pf = (ProductsForm)form;
        String gameId = pf.getGameId();
        
        String flag = pf.getFlag();
        req.setAttribute( " flag " , flag);
        String fieldname = "" ;
        String value = "" ;
         if (flag.equals( " 2 " )) {
            fieldname = pf.getFieldname();
            value = pf.getValue();