linktag.java

简介： 功能介绍： 1：多用户统计系统

package org.jetic.web.doc;

import org.w3c.dom.*;
import javax.servlet.jsp.*;
import javax.servlet.jsp.tagext.*;

/**
 * Title:        经天科技
 * Description:
 * Copyright:    Copyright (c) 2001
 * Company:      www.jetic.org 经天
 * @author hover
 * @version 1.0
 */

public class LinkTag extends BodyTagSupport {
    private org.w3c.dom.NodeList links;
    private int linkcount = 0;
    private int count = 0;

    public int doStartTag() throws javax.servlet.jsp.JspException {
        try {
            linkcount = links.getLength();
            if (count++ < linkcount) {
                writeBody();
                return EVAL_BODY_TAG;
            }
            else {
                return SKIP_BODY;
            }
        }
        catch (Exception ex) {
            ex.printStackTrace(System.err);
            return SKIP_BODY;
        }
    }

    public int doAfterBody() throws javax.servlet.jsp.JspException {
        BodyContent body = getBodyContent();
        try {
            if (count++ < linkcount) {
                writeBody();
                return EVAL_BODY_TAG;
            }
            else {
                body.writeOut(body.getEnclosingWriter());
                return SKIP_BODY;
            }
        }
        catch (Exception ex) {
            ex.printStackTrace(System.err);
            return SKIP_BODY;
        }
    }

    public void writeBody() {
        Node link = links.item(count - 1);
        NamedNodeMap nnm = link.getAttributes();
        Attr name = (Attr)nnm.getNamedItem("name");
        Attr url = (Attr)nnm.getNamedItem("url");

        pageContext.setAttribute("name", name.getNodeValue());
        pageContext.setAttribute("url", url.getNodeValue());
    }

    public org.w3c.dom.NodeList getLinks() {
        return links;
    }
    public void setLinks(org.w3c.dom.NodeList newLinks) {
        links = newLinks;
    }
}