addgood.java

J2EE平台是一种比较 优秀的开发平台 此为其上一个比较大的案例开发

package goodTrans;
import goodSearch.GoodInfoDes;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Properties;
import javax.ejb.Handle;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import sessEJB.GoodPack;
import sessEJB.GoodPackHome;
/**
 * @version 	1.0
 * @author
 */
public class AddGood extends HttpServlet {
	/**
	* @see javax.servlet.http.HttpServlet#void (javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
	*/
	public void doGet(HttpServletRequest req, HttpServletResponse resp)
		throws ServletException, IOException {
		resp.setContentType("text/html;charset=gb2312");
		PrintWriter out = resp.getWriter();
		HttpSession session = req.getSession();
		ServletContext sc = session.getServletContext();
		GoodInfoDes good = (GoodInfoDes) session.getAttribute("good");
		

		GoodPack goodPack;
		if (session.getAttribute("handle") == null) {
			try {
				Properties pro = System.getProperties();
				Context ctx = new InitialContext(pro);
				GoodPackHome home =
					(GoodPackHome) PortableRemoteObject.narrow(
						ctx.lookup("ejb/sessEJB/GoodPackHome"),
						GoodPackHome.class);
				GoodPack temp = home.create();
				Handle goodHandle = temp.getHandle();
				session.setAttribute("handle", goodHandle);
			} catch (Exception e) {
			}
		}
		

		
		Handle goodHandle = (Handle) session.getAttribute("handle");
		goodPack =
			(GoodPack) javax.rmi.PortableRemoteObject.narrow(
				goodHandle.getEJBObject(),
				GoodPack.class);
		session.setAttribute(
			"pack",
			goodPack.addGood(
				new sessEJB.GoodInfoDes(
					good.getGoodId(),
					good.getName(),
					good.getComment(),
					good.getType(),
					good.getPrice(),
					good.getDiscount())));
		resp.sendRedirect("./goodTrans/goods.jsp");
	}
	/**
	* @see javax.servlet.http.HttpServlet#void (javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
	*/
	public void doPost(HttpServletRequest req, HttpServletResponse resp)
		throws ServletException, IOException {
		doGet(req, resp);
	}
}