currentpagepathtag.java

java 写的一个新闻发布系统

package org.jahia.taglibs.util;

import org.jahia.data.JahiaData;
import org.jahia.exceptions.JahiaException;
import org.jahia.utils.JahiaConsole;
import org.jahia.taglibs.util.Utils;
import org.jahia.taglibs.util.constants.JahiaTagsConstants;
import org.jahia.services.pages.JahiaPage;

import java.io.*;
import java.util.*;

import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.jsp.*;
import javax.servlet.jsp.tagext.*;


/**
 * Class CurrentPagePathTag : returns the formated path of the current page
 *
 * @author  Jerome Tamiotti
 */
public class CurrentPagePathTag extends TagSupport {

    private String separator = "/";
    private String style = "";
    private int maxchar = 0;

    public void setSeparator(String separator) {
        this.separator = separator;
    }

    public void setStyle(String style) {
        this.style = style;
    }

    public void setMaxchar(int maxchar) {
        this.maxchar = maxchar;
    }


    public int doStartTag() {

        HttpServletRequest request = (HttpServletRequest)pageContext.getRequest();
        JahiaData jData = (JahiaData) request.getAttribute("org.jahia.data.JahiaData");
        if (jData == null) {
            HashMap tempEngineMap = (HashMap) request.getAttribute("org.jahia.engines.EngineHashMap");
            jData                 = (JahiaData) tempEngineMap.get("jData");
        }
        try {
            Enumeration thePath = jData.page().getPagePath();
            StringBuffer path = new StringBuffer();
            while (thePath.hasMoreElements()) {
                JahiaPage thePage = (JahiaPage) thePath.nextElement();
                if (thePage != null) {
                    path.append("<a ");
                    if (!this.style.equals("")) {
                        path.append("class=\"");
                        path.append(this.style);
                        path.append("\" ");
                    }
                    path.append("href=\"");
                    path.append(thePage.getUrl());
                    path.append("\">");
                    if (this.maxchar == 0) {
                       this.maxchar = thePage.getTitle().length();
                    }
                    path.append( jData.gui().glueTitle(thePage.getTitle(), this.maxchar) );
                    path.append("</a>");
                    if (thePath.hasMoreElements()) {
                        path.append( Utils.insertContextPath( jData.gui().drawHttpJspContext(request), this.separator ) );
                    }
                }
            }
            JspWriter out = pageContext.getOut();
            out.print(path.toString());

        } catch (IOException ioe) {
            JahiaConsole.println("CurrentPagePathTag: doStartTag ", ioe.toString());
        } catch (JahiaException je) {
            JahiaConsole.println("CurrentPagePathTag: doStartTag ", je.toString());
        }
        return SKIP_BODY;
    }

}