serverhttppathtag.java

java 写的一个新闻发布系统

package org.jahia.taglibs.url;

import org.jahia.data.*;
import org.jahia.params.ParamBean;
import org.jahia.exceptions.JahiaException;
import org.jahia.utils.JahiaConsole;

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

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


/**
 * Return the server http path
 *
 * @author Khue Nguyen
 */
public class ServerHttpPathTag extends BodyTagSupport {

    private static final String CLASS_NAME = ServerHttpPathTag.class.getName();

    public int doStartTag() {
        ServletRequest request = 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");
        }
        if ( jData == null )
            return SKIP_BODY;

        try {
            JspWriter out = pageContext.getOut();
            out.print( getServerHttpPath(jData.params()) );
        } catch (IOException ioe) {
            JahiaConsole.println(CLASS_NAME+"doStartTag", ioe.toString());
        }


        return SKIP_BODY;
    }


    //-------------------------------------------------------------------------
    /**
     * Build an http path containing the server name and port,
     * instead of the path from JahiaPrivateSettings.
     *
     * @return An http path leading to Jahia, built with the server name, and
     *         the server port if nonstandard.
     *
     */
    private final String getServerHttpPath (ParamBean jParams)
    {
        return jParams.getRequest().getContextPath();
    }


}