browse.java

J2EE开发与Weblogic一书中的源代码

package webauction.web.action;

import java.io.IOException;
import javax.servlet.*;
import javax.servlet.http.*;
import webauction.ejb.*;
import webauction.web.WebConstants;
import webauction.web.javabean.*;

public class Browse extends HttpServlet {

    public void service(HttpServletRequest req, HttpServletResponse res)
        throws ServletException, IOException {
        ServletContext sc = getServletContext();
        WebAuction webAuction = (WebAuction) sc.getAttribute(WebConstants.SC_ATTRIB_WEBAUCTION);

        String category = req.getParameter("cat");
        if (null != category) {
            ItemValueHolder[] items = webAuction.getItemsInCategory(category);
            req.setAttribute("items", items);

            BrowseBean browseBean = new BrowseBean();
            browseBean.setCategory(category);
            browseBean.setItems(items);
            req.setAttribute("browseBean", browseBean);

            PageBean pageBean = new PageBean();
            pageBean.setTitle("WebLogic Auction");
			pageBean.setBody("jsp/browseitems.jsp");
            req.setAttribute("pageBean", pageBean);
        } else {
            PageBean pageBean = new PageBean();
            pageBean.setTitle("WebLogic Auction");
            pageBean.setBody("jsp/selectcategory.jsp");
            req.setAttribute("pageBean", pageBean);
        }

        RequestDispatcher rd = sc.getNamedDispatcher("template");
        rd.forward(req, res);
        return;
    }
}