📄 catalog_jsp.java

📁 用jsp做的一个网上书店系统
💻 JAVA
字号:
package org.apache.jsp;

import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.jsp.*;
import mypack.*;
import java.util.Properties;
import java.util.*;

public final class catalog_jsp extends org.apache.jasper.runtime.HttpJspBase
    implements org.apache.jasper.runtime.JspSourceDependent {


   public String convert(String s){
    try{
     	return new String(s.getBytes("ISO-8859-1"),"GB2312");
    }catch(Exception e){return null;}
   }

  private static java.util.Vector _jspx_dependants;

  static {
    _jspx_dependants = new java.util.Vector(2);
    _jspx_dependants.add("/common.jsp");
    _jspx_dependants.add("/banner.jsp");
  }

  public java.util.List getDependants() {
    return _jspx_dependants;
  }

  public void _jspService(HttpServletRequest request, HttpServletResponse response)
        throws java.io.IOException, ServletException {

    JspFactory _jspxFactory = null;
    PageContext pageContext = null;
    HttpSession session = null;
    ServletContext application = null;
    ServletConfig config = null;
    JspWriter out = null;
    Object page = this;
    JspWriter _jspx_out = null;
    PageContext _jspx_page_context = null;


    try {
      _jspxFactory = JspFactory.getDefaultFactory();
      response.setContentType("text/html; charset=GB2312");
      pageContext = _jspxFactory.getPageContext(this, request, response,
      			"errorpage.jsp", true, 8192, true);
      _jspx_page_context = pageContext;
      application = pageContext.getServletContext();
      config = pageContext.getServletConfig();
      session = pageContext.getSession();
      out = pageContext.getOut();
      _jspx_out = out;

      out.write("\r\n");
      out.write("\r\n");
      out.write("\r\n");
      out.write("\r\n");
      out.write("\r\n");
      out.write("\r\n");
      mypack.BookDB bookDB = null;
      synchronized (application) {
        bookDB = (mypack.BookDB) _jspx_page_context.getAttribute("bookDB", PageContext.APPLICATION_SCOPE);
        if (bookDB == null){
          bookDB = new mypack.BookDB();
          _jspx_page_context.setAttribute("bookDB", bookDB, PageContext.APPLICATION_SCOPE);
        }
      }
      out.write("\r\n");
      out.write("\r\n");
      out.write('\r');
      out.write('\n');
      out.write("\r\n");
      out.write("\r\n");
      out.write("\r\n");
      mypack.ShoppingCart cart = null;
      synchronized (session) {
        cart = (mypack.ShoppingCart) _jspx_page_context.getAttribute("cart", PageContext.SESSION_SCOPE);
        if (cart == null){
          cart = new mypack.ShoppingCart();
          _jspx_page_context.setAttribute("cart", cart, PageContext.SESSION_SCOPE);
        }
      }
      out.write("\r\n");
      out.write("\r\n");
      out.write("<html>\r\n");
      out.write("<head><title>BookCatalog</title></head>\r\n");
      out.write(" ");
      out.write("\r\n");
      out.write("<body>\r\n");
      out.write("<img src=\"logo.bmp\" >\r\n");
      out.write("<hr>\r\n");
      out.write("\r\n");
      out.write("\r\n");
      out.write("\r\n");

  // Additions to the shopping cart
  String bookId = request.getParameter("Add");
  if (bookId != null) {
    BookDetails book = bookDB.getBookDetails(bookId);
    cart.add(bookId, book);

      out.write("\r\n");
      out.write("<p><h3>\r\n");
      out.write("<font color=\"red\">\r\n");
      out.write("您已将 <i>");
      out.print(convert(book.getTitle()));
      out.write("</i> 加入购物车</font></h3>\r\n");

}
if (cart.getNumberOfItems() > 0) {

      out.write("\r\n");
      out.write("\r\n");
      out.write("<p><strong><a href=\"");
      out.print(request.getContextPath());
      out.write("/showcart.jsp\">察看购物车</a>&nbsp;&nbsp;&nbsp;\r\n");
      out.write("<a href=\"");
      out.print(request.getContextPath());
      out.write("/cashier.jsp\">付账</a></p></strong>\r\n");
      out.write("\r\n");

}

      out.write("\r\n");
      out.write("\r\n");
      out.write("<h3>请选择想购买的书：</h3>\r\n");
      out.write("\r\n");
      out.write("<table>\r\n");

  Collection c = bookDB.getBooks();
  Iterator i = c.iterator();
  while (i.hasNext()) {
    BookDetails book = (BookDetails)i.next();
    bookId = book.getBookId();

      out.write("\r\n");
      out.write("\r\n");
      out.write("<tr>\r\n");
      out.write("<td bgcolor=\"#ffffaa\">\r\n");
      out.write("<a href=\"");
      out.print(request.getContextPath());
      out.write("/bookdetails.jsp?bookId=");
      out.print(bookId);
      out.write("\"><strong>\r\n");
      out.print(convert(book.getTitle()));
      out.write("&nbsp;</strong></a></td>\r\n");
      out.write("\r\n");
      out.write("<td bgcolor=\"#ffffaa\" rowspan=2>\r\n");
      out.write("\r\n");
      out.write("\r\n");
      out.write("<td bgcolor=\"#ffffaa\" rowspan=2>\r\n");
      out.write("<a href=\"");
      out.print(request.getContextPath());
      out.write("/catalog.jsp?Add=");
      out.print(bookId);
      out.write("\">&nbsp;加入购物车&nbsp;</a></td></tr>\r\n");
      out.write("\r\n");
      out.write("<tr>\r\n");
      out.write("<td bgcolor=\"#ffffff\">\r\n");
      out.write("&nbsp;&nbsp;作者：<em>");
      out.print(convert(book.getName()));
      out.write("&nbsp;\r\n");
      out.write("</em></td></tr>\r\n");
      out.write("\r\n");
 } 
      out.write("\r\n");
      out.write("\r\n");
      out.write("</table>\r\n");
      out.write("\r\n");
      out.write("</body>\r\n");
      out.write("</html>\r\n");
    } catch (Throwable t) {
      if (!(t instanceof SkipPageException)){
        out = _jspx_out;
        if (out != null && out.getBufferSize() != 0)
          out.clearBuffer();
        if (_jspx_page_context != null) _jspx_page_context.handlePageException(t);
      }
    } finally {
      if (_jspxFactory != null) _jspxFactory.releasePageContext(_jspx_page_context);
    }
  }
}
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