bid.java

来自「J2EE开发与Weblogic一书中的源代码」· Java 代码 · 共 44 行

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 Bid extends HttpServlet {

    public void service(HttpServletRequest req, HttpServletResponse res)
        throws ServletException, IOException {
        ServletContext sc = getServletContext();
        WebAuction webAuction =
            (WebAuction) sc.getAttribute(WebConstants.SC_ATTRIB_WEBAUCTION);
        try {
            String itemStr = req.getParameter("id");
            int itemId = Integer.parseInt(itemStr);
            ItemValueHolder item = webAuction.getItemWithId(itemId);
            req.setAttribute("item", item);
            PageBean pageBean = new PageBean();
            pageBean.setTitle("WebLogic Auction");
            pageBean.setBody("jsp/enterbid.jsp");
            req.setAttribute("pageBean", pageBean);
        } catch (NumberFormatException e) {
            PageBean pageBean = new PageBean();
            pageBean.setTitle("WebLogic Auction");
            pageBean.setBody("jsp/main.jsp");
            req.setAttribute("pageBean", pageBean);
            e.printStackTrace();
        } catch (NoSuchItemException e) {
            PageBean pageBean = new PageBean();
            pageBean.setTitle("WebLogic Auction");
            pageBean.setBody("jsp/main.jsp");
            req.setAttribute("pageBean", pageBean);
            e.printStackTrace();
        }

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