menustag.java

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package com.yhcms.tag;

import java.util.ArrayList;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.TagSupport;

import org.apache.log4j.Logger;

import com.yhcms.artclass.bean.ArtClass;
import com.yhcms.artclass.dao.ArtClassDaoIm;
import com.yhcms.artclass.itface.ArtClassDao;

/**
 * <p>Title:系统导航菜单标签</p>
 * <br><b>CopyRight: yyhweb[由由华网]</b>
 * @author stephen
 * @version YH-2.0
 */
public class MenusTag extends TagSupport {

	private static final long serialVersionUID = 1L;
	private static Logger yhlog = Logger.getLogger(MenusTag.class.getName());

	/**
	 * 导航菜单类构造方法
	 */
	public MenusTag() {

	}

	public int doStartTag() throws JspException {
		return 0;
	}

public int doEndTag() throws JspException {
	     try{
		     ArtClassDao classdao = ArtClassDaoIm.getInstance();
		     // 取得系统所有父类栏目
		     ArrayList classlist = (ArrayList)classdao.getAllParClass();
		     int clsize = classlist.size();
		     String wid = 100/(clsize+1)+"%";
		     int i = 0;
		     int isclass = 0;
		     ArtClass curClass = null;
		     StringBuffer sb = new StringBuffer();
		     sb.append("<table width=100% class='tab'><tr>");
		     sb.append("<td width='"+wid+"' align='center'>");
		     sb.append("<a href='index.html'>");
	    	 sb.append("首&nbsp;&nbsp;页");
	    	 sb.append("</a>");
	    	 sb.append("</td>");
		     for (i=0;i<clsize;i++){
		    	 curClass = (ArtClass)classlist.get(i);
		    	 isclass = curClass.getIsclass();
		    	 sb.append("<td>");
		    	 sb.append(" | ");
		    	 sb.append("</td>");
		    	 sb.append("<td width='"+wid+"' align='center'>" );
		    	 if(isclass == 1){
		    		 sb.append("<a href='ArtList.html?csId=");
			    	 sb.append(curClass.getId()+"'>"); 
		    	 }else{
		    		 sb.append("<a href='");
		    		 sb.append(curClass.getUrl()+"'>");
		    	 }
		    	 
		    	 sb.append(curClass.getName());
		    	 sb.append("</a>");
		    	 sb.append("</td>");
		     }
		     sb.append("</tr></table>");
		    
		 	 JspWriter out = pageContext.getOut();
	         out.println(sb);
	         sb = null;
	     }catch(Exception e){
            yhlog.error("MenusTag tag's doEndTag error!");
         }
     return 6;
 }
}