bookservlet.java~16~

来自「一个java」· JAVA~16~ 代码 · 共 51 行

package bookstore.servlet;

import bookstore.util.*;
import bookstore.ejb.*;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;

public class BookServlet extends HttpServlet
{
  private static final String CONTENT_TYPE = "text/html; charset=GBK";
  private BookDetails bookValue;
  private BookController bookController;
  private BookControllerHome bookControllerHome;

  //Initialize global variables
  public void init() throws ServletException {
  }
  //Process the HTTP Get request
  public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
  {
    String bookId;
    try
    {
      bookId=(String)request.getAttribute("bookID");
      bookControllerHome = EJBGetter.getBookControllerHome();
      bookController=bookControllerHome.create();
      bookValue=bookController.getBookValue(bookId);
      request.setAttribute("bookValue",bookValue);
      forward("/showBooks.jsp",request,response);
    }catch(Exception ex)
    {
      System.out.println(ex.getMessage());
    }

  }
  //Process the HTTP Post request
  public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    doGet(request, response);
  }
  //Clean up resources
  public void destroy() {
  }
  private void forward(String url,HttpServletRequest request,HttpServletResponse response) throws IOException,ServletException
  {
    RequestDispatcher rd=getServletContext().getRequestDispatcher(url);
    rd.forward(request,response);
  }
}