📄 cart_jsp.java

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💻 JAVA
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package org.apache.jsp;

import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.jsp.*;
import bean.*;
import java.util.*;

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

  private static java.util.List _jspx_dependants;

  public Object 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,
      			null, 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");
      bean.Products products = null;
      synchronized (session) {
        products = (bean.Products) _jspx_page_context.getAttribute("products", PageContext.SESSION_SCOPE);
        if (products == null){
          products = new bean.Products();
          _jspx_page_context.setAttribute("products", products, PageContext.SESSION_SCOPE);
        }
      }
      out.write('\r');
      out.write('\n');
      bean.Cart cart = null;
      synchronized (session) {
        cart = (bean.Cart) _jspx_page_context.getAttribute("cart", PageContext.SESSION_SCOPE);
        if (cart == null){
          cart = new bean.Cart();
          _jspx_page_context.setAttribute("cart", cart, PageContext.SESSION_SCOPE);
          out.write('\r');
          out.write('\n');
        }
      }
      out.write("\r\n");
      out.write("<html>\r\n");
      out.write("<head>\r\n");
      out.write("<title>car</title>\r\n");
      out.write("<meta http-equiv=\"Content-Type\" content=\"text/html; charset=gb2312\">\r\n");
      out.write("</head>\r\n");
      out.write("\r\n");
 
//action为执行的操作，add表示添加此商品，remove表示删除此商品。
String action=request.getParameter("action");
//获得所有添加、删除的商品的itemid。
String items[]=request.getParameterValues("itemId");
if(items!=null)
for(int i=0;i<items.length;i++)
{
  if(action.equals("add")) cart.addItem(items[i],1);
  else if(action.equals("remove"))cart.removeItem(items[i]);   
 }
 
      out.write("\r\n");
      out.write("\r\n");
      out.write("<body>\r\n");
      out.write("\r\n");
      out.write("<center>\r\n");
      out.write("<form action=\"cart.jsp\" method=get>\r\n");
      out.write("<table width=\"75%\" border=\"1\" bordercolor=\"#006633\">\r\n");
      out.write("  <tr bgcolor=\"#999999\">\r\n");
      out.write("    <td>id</td>\r\n");
      out.write("    <td>名称</td>\r\n");
      out.write("    <td>数量</td>    \r\n");
      out.write("  </tr>\r\n");
      out.write("  ");

  java.util.HashMap cart_item=cart.getItems();
 Iterator it=cart_item.keySet().iterator();
 
  while(it.hasNext())
  {
  String itemId=(String)it.next();
  Item item=products.getItem(itemId);
         
  
      out.write("\r\n");
      out.write("  <tr>\r\n");
      out.write("    <td><input type=\"checkbox\" name=\"itemId\" value=\"");
      out.print(item.getItemId());
      out.write("\"></td>   \r\n");
      out.write("    <td>");
      out.print(item.getDescription());
      out.write("</td>\r\n");
      out.write("\t <td>");
      out.print(cart_item.get(itemId));
      out.write("</td>    \r\n");
      out.write("  </tr>\r\n");
      out.write("  ");
}
      out.write("\r\n");
      out.write(" <tr align=left><td colspan=5><input type=submit value=\"remove\" name=\"action\"></td></tr> \r\n");
      out.write(" <tr align=left><td colspan=5><a href=\"shopping.jsp\">购物</a>『』<a href=\"logout.jsp\">注销</a></td></tr>\r\n");
      out.write("</table>\r\n");
      out.write("</form></center>\r\n");
      out.write("</body></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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