cart_0005fmodify_0002ejsp_jsp.java

电子商务系统 系统主要分为前台和后台。前台包括产品的展示及会员购物等模块

import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.jsp.*;
import org.apache.jasper.runtime.*;
import java.sql.*;
import java.util.Vector;
import commerce.goodselement;

public class cart_0005fmodify_0002ejsp_jsp extends HttpJspBase {


  private static java.util.Vector _jspx_includes;

  public java.util.List getIncludes() {
    return _jspx_includes;
  }

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

    JspFactory _jspxFactory = null;
    javax.servlet.jsp.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=gb2312");
      pageContext = _jspxFactory.getPageContext(this, request, response,
      			"", true, 8192, true);
      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");

Vector cart=(Vector)session.getAttribute("cart");
Vector newcart=new Vector();
for(int i=0;i<cart.size();i++){
	String number=request.getParameter("num"+i);
	goodselement mygoodselement=(goodselement)cart.elementAt(i);
	String num=request.getParameter("num"+i);
	try{
	int newnum=Integer.parseInt(num);
	mygoodselement.number=newnum;
	if(newnum!=0){
		newcart.addElement(mygoodselement);}
	}catch(Exception e){
		out.println("<script language='javascript'>alert('您输入的数量不是有效的整数!');history.back();</script>");
		return;
	}
}
session.setAttribute("cart",newcart);
response.sendRedirect("cart_see.jsp");

      out.write("\r\n");
    } catch (Throwable t) {
      out = _jspx_out;
      if (out != null && out.getBufferSize() != 0)
        out.clearBuffer();
      if (pageContext != null) pageContext.handlePageException(t);
    } finally {
      if (_jspxFactory != null) _jspxFactory.releasePageContext(pageContext);
    }
  }
}