shopmenu.java

jsp网站开发四“酷”全书原码

package com.publish.shop.taglib;

import java.util.List;
import java.util.ArrayList;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspTagException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.TagSupport;
import com.publish.shop.util.javabeans.SessionWrapper;
import com.publish.shop.util.javabeans.Constants;
import com.publish.shop.util.javabeans.Utility;
import com.publish.shop.util.javabeans.Debug;

public class ShopMenu extends TagSupport {
  private String csContextPath = "";
  private String csImgPath = "";
  private int width = 0;
  private int widthsubmenu = 0;
  private int widthsubsubmenu = 0;
  private int numberofsubmenus = 0;
  private int numberofsubsubmenus = 0;
  private List listMenu = null;
  private List listSubMenu = null;
  private List listSubSubMenu = null;

  public ShopMenu() {
  }

  public int doStartTag() throws JspException
  {
    try
    {
      HttpServletRequest req = (HttpServletRequest)pageContext.getRequest();
      csContextPath = req.getContextPath();
      csImgPath = csContextPath + "/images/";
      HttpSession lSession = req.getSession();
      SessionWrapper lSessionWrapper = (SessionWrapper)lSession.getAttribute(Constants.Session_Wrapper);
      String lsSelectedMenu = "";
      String lsSelectedSubMenu = "";
      String lsSelectedSubSubMenu = "";
      if (lSession.getAttribute(Constants.SelectedMenu) != null)
        lsSelectedMenu = (String)lSession.getAttribute(Constants.SelectedMenu);
      if (lSession.getAttribute(Constants.SelectedSubMenu) != null)
        lsSelectedSubMenu = (String)lSession.getAttribute(Constants.SelectedSubMenu);
      if (lSession.getAttribute(Constants.SelectedSubSubMenu) != null)
        lsSelectedSubSubMenu = (String)lSession.getAttribute(Constants.SelectedSubSubMenu);
      Menu lMenu = null;
      listMenu = (ArrayList)lSession.getAttribute(Constants.Menu_Config_Session);
      createLogo();
      createAllMenu(lsSelectedMenu);
      createAllSubMenu(lsSelectedSubMenu);
    }
    catch(Exception ex)
    {
      ex.printStackTrace();
      throw new JspTagException(ex.getMessage());
    }
    return 0;
  }

  private void createAllMenu(String selectedMenu) throws Exception{
    JspWriter jspwriter = pageContext.getOut();
    if(listMenu==null || listMenu.size()==0)
      return ;
    jspwriter.write("<TABLE bgColor=#0033cc border=0 cellPadding=0 cellSpacing=0 width=\"100%\">");
    jspwriter.write("<TBODY><TR><TD><TABLE border=0 cellPadding=0 cellSpacing=0><TBODY><TR>");
    for(int i=0;i<listMenu.size();i++){
      jspwriter.write("<TD><IMG alt=\"\" border=0 height=1 src=\""+csImgPath+ "dot(1).gif\" width=18></TD>");
      Menu lMenu = (Menu)listMenu.get(i);
      if(selectedMenu.equals(lMenu.getMenuID())){
        listSubMenu = lMenu.getChilds();
        jspwriter.write("<TD><A href=\""+csContextPath+lMenu.getMenuLink()+"\"><IMG alt=\"\" border=0 src=\""+csImgPath+lMenu.getMenuSelImg()+"\"></A></TD>");
          Debug.println("<TD><A href=\""+csContextPath+lMenu.getMenuLink()+"\"><IMG alt=\"\" border=0 src=\""+csImgPath+lMenu.getMenuSelImg()+"\"></A></TD>");
      }else{
        jspwriter.write("<TD><A href=\""+csContextPath+lMenu.getMenuLink()+"\"><IMG alt=\"\" border=0 src=\""+csImgPath+lMenu.getMenuImg()+"\"></A></TD>");
          Debug.println("<TD><A href=\""+csContextPath+lMenu.getMenuLink()+"\"><IMG alt=\"\" border=0 src=\""+csImgPath+lMenu.getMenuSelImg()+"\"></A></TD>");
      }
    }
    jspwriter.write("</TR></TBODY></TABLE></TD></TR></TBODY></TABLE>");
  }

  private void createAllSubMenu(String selectedSubMenu) throws Exception{
    if(listSubMenu==null || listSubMenu.size()==0)
        return;
    JspWriter jspwriter = pageContext.getOut();
    jspwriter.write("<TABLE border=0 cellPadding=0 cellSpacing=0 width=\"100%\"><TBODY>");
    jspwriter.write("<TR><TD bgColor=#cccccc><IMG alt=\"\" border=0 height=5 src=\"" + csImgPath + "dot(1).gif\" width=1></TD></TR>");
    jspwriter.write("<TR><TD bgColor=#cccccc vAlign=bottom><TABLE border=0 cellPadding=0 cellSpacing=0><TBODY><TR>");
    jspwriter.write("<TD><IMG alt=\"\" border=0 height=1 src=\""+csImgPath+"dot(1).gif\" width=20></TD><TD align=middle>");
    for(int i=0;i<listSubMenu.size();i++){
        Menu lMenu = (Menu)listSubMenu.get(i);
        if(selectedSubMenu.equals(lMenu.getMenuID())){
//          listSubSubMenu = lMenu.getChilds();
          jspwriter.write("<A href=\""+csContextPath+lMenu.getMenuLink()+"\"><B style=\"TEXT-DECORATION: underline\">"+lMenu.getMenuName()+"</B></A>");
        }else{
          jspwriter.write("<A href=\""+csContextPath+lMenu.getMenuLink()+"\">"+lMenu.getMenuName()+"</A>");
        }
        if(i<listSubMenu.size()-1)
          jspwriter.write(" | ");
      }
    jspwriter.write("</TD></TR></TBODY></TABLE></TD></TR><TR>");
    jspwriter.write("<TD bgColor=#cccccc><IMG alt=\"\" border=0 height=3 src=\""+csImgPath+"dot(1).gif\" width=1></TD>");
    jspwriter.write("</TR></TBODY></TABLE>");
  }

  private void createLogo() throws Exception
  {
    JspWriter jspwriter = pageContext.getOut();
    jspwriter.write("<DIV id=point1");
    jspwriter.write("style=\"HEIGHT: 50px; POSITION: absolute; WIDTH: 60px; Z-INDEX: 1\">");
    jspwriter.write("<A href=\"http://nokia.vip.ccwonline.com.cn/E-order/purchase/dgcar.asp\">");
    jspwriter.write("<IMG border=0 src=" + csImgPath + "float.gif></A></DIV>");
    jspwriter.write("<TABLE border=0 cellPadding=0 cellSpacing=0 height=70 width=420><TBODY>");
    jspwriter.write("<TR><TD align=middle vAlign=bottom><TABLE><TBODY><TR>");
    jspwriter.write("<TD>");
    jspwriter.write("</TD></TR></TBODY></TABLE></TD>");
    jspwriter.write("<TD align=middle class=txt vAlign=bottom width=300><FONT");
    jspwriter.write("color=#666666>"+Utility.getMessage("Shop.title")+"</FONT></TD></TR>");
    jspwriter.write("<TR><TD align=middle colSpan=2 vAlign=bottom><IMG alt=\"\" border=0 height=5");
    jspwriter.write(" src=\""+csImgPath+"dot.gif\" width=1></TD></TR></TBODY></TABLE>");
  }
}