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📄 cart_jsp.java

📁 网上书店,简单代码.让初学者容易掌握内容
💻 JAVA
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package org.apache.jsp;

import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.jsp.*;
import java.sql.*;
import java.lang.Math.*;

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

  private static java.util.Vector _jspx_dependants;

  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;


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

      out.write("\r\n\r\n\r\n");
      bookshop.Conn conn = null;
      synchronized (pageContext) {
        conn = (bookshop.Conn) pageContext.getAttribute("conn", PageContext.PAGE_SCOPE);
        if (conn == null){
          conn = new bookshop.Conn();
          pageContext.setAttribute("conn", conn, PageContext.PAGE_SCOPE);
        }
      }
      out.write("\r\n\r\n");
      bookshop.Buy cart = null;
      synchronized (session) {
        cart = (bookshop.Buy) pageContext.getAttribute("cart", PageContext.SESSION_SCOPE);
        if (cart == null){
          cart = new bookshop.Buy();
          pageContext.setAttribute("cart", cart, PageContext.SESSION_SCOPE);
        }
      }
      out.write("\r\n<html>\r\n<head>\r\n\t<title>网上书店</title>\r\n\t<Link rel=\"stylesheet\" type=\"text/css\" href=\"style.css\">\r\n</head>\r\n<body TEXT=\"#000000\" BGCOLOR=\"#FFCCCC\" BACKGROUND=\"b01.jpg\">\r\n<Center>\r\n<h1>网上书店</h1>\r\n</Center>\r\n");

   String[] id=cart.getItems();
   if(id.length==0)
	   out.println("你的购物车暂时为空");
   else
   {

      out.write("\r\n<center></center>\r\n");

String sql="";
ResultSet rs=null;
out.print("<table  border='1' align='center'>");
for(int i=0; i<id.length;i++)
{
	out.println("<tr>");
	out.println("<td>"+(i+1)+"</td>");
	sql="select * from book2 where id="+id[i];
	System.out.println(sql);
	rs=conn.executeQuery(sql);
	if(rs.next())
	{
		out.println("<td>"+rs.getString("name")+"</td>");
		out.println("<td>"+rs.getString("hits")+"</td>");
	}
}
out.print("</table>");
   }

      out.write("\r\n<a href=d.jsp>继续购买</a>\r\n\r\n</body>\r\n</html>");
    } catch (Throwable t) {
      if (!(t instanceof SkipPageException)){
        out = _jspx_out;
        if (out != null && out.getBufferSize() != 0)
          out.clearBuffer();
        if (pageContext != null) pageContext.handlePageException(t);
      }
    } finally {
      if (_jspxFactory != null) _jspxFactory.releasePageContext(pageContext);
    }
  }
}

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