📄 receiptservlet.java
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/* * * Copyright 2001 Sun Microsystems, Inc. All Rights Reserved. * * This software is the proprietary information of Sun Microsystems, Inc. * Use is subject to license terms. * */import java.io.*;import javax.servlet.*;import javax.servlet.http.*;import cart.ShoppingCart;/** * An HTTP servlet that responds to the POST method of the HTTP protocol. * It clears the shopping cart, thanks the user for the order, * and resets the page to the Bookstore's main page. */public class ReceiptServlet extends HttpServlet { public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // Get the user's session and shopping cart HttpSession session = request.getSession(true); // Payment received -- invalidate the session session.invalidate(); // set content type header before accessing the Writer response.setContentType("text/html"); response.setBufferSize(8192); PrintWriter out = response.getWriter(); // then write the response out.println("<html>" + "<head><title> Receipt </title>" + "</head>" ); // Get the dispatcher; it gets the banner to the user RequestDispatcher dispatcher = getServletContext().getRequestDispatcher("/banner"); if (dispatcher != null) dispatcher.include(request, response); out.println("<h3>Thank you for purchasing your books from us " + request.getParameter("cardname") + "."); out.println("<p> <p><strong><a href=\"" + response.encodeURL("/bookstore1/catalog") + "\">Continue Shopping?</a> " + "</body></html>"); out.close(); } public String getServletInfo() { return "The Receipt servlet clears the shopping cart, " + "thanks the user for the order, and resets the " + "page to the BookStore's main page."; }}⌨️ 快捷键说明
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