servletcontainerutils.java

java 写的一个新闻发布系统

//
//                                   ____.
//                       __/\ ______|    |__/\.     _______
//            __   .____|    |       \   |    +----+       \
//    _______|  /--|    |    |    -   \  _    |    :    -   \_________
//   \\______: :---|    :    :           |    :    |         \________>
//           |__\---\_____________:______:    :____|____:_____\
//                                      /_____|
//
//              . . . i n   j a h i a   w e   t r u s t . . .
//

package org.jahia.utils;

import java.io.*;                                       // File
import java.util.*;                                     // HashMap
import javax.servlet.*;					                // ServletContext

import org.jahia.data.constants.JahiaConstants;     // JahiaConstants




public class ServletContainerUtils
{

    public static HashMap infos = null;


    //-------------------------------------------------------------------------
    /**
     * Default constructor.
     */
    public ServletContainerUtils ()
    {
        // nothing to do...
    }


   /**
     * Get server specific informations, like it's name (Orion, Tomcat, etc.)
     * and it's server home disk path. This method returns the result in a
     * HashMap with these keys: <code>type</code> and <code>home</code>.
     *
     * @author  Khue N'Guyen
     * @author  Alexandre Kraft
     */
    public static HashMap getServerInformations( ServletConfig config )
    {
        ServletContext context = config.getServletContext();

        if( infos != null ) {
            return infos;
        } else {

            // initialize the result hashmap...
            infos = new HashMap();
            infos.put("info", context.getServerInfo() );

            JahiaConsole.println("getServerInformations","serverinfo = " + context.getServerInfo() );

            // try to get the server type
            if ( context.getServerInfo().toLowerCase().indexOf(JahiaConstants.SERVER_ORION)>=0 )
            {
                infos.put("type", JahiaConstants.SERVER_ORION);

                // try to get the server home disk path
                String contextRealPath = context.getRealPath("." + File.separator);

                // last occurence of the server name
                int pos = contextRealPath.toLowerCase().lastIndexOf("orion");
                if ( pos>=0 ){
                    int pos2 = contextRealPath.toLowerCase().indexOf(File.separator,pos);
                    if ( pos2 >=0 ){
                        infos.put("home", contextRealPath.substring(0, pos2) + File.separator);
                    }
                }
            }
            else if ( context.getServerInfo().toLowerCase().indexOf("tomcat")>=0 )
            {
                infos.put("type",JahiaConstants.SERVER_TOMCAT);
                JahiaConsole.println("getServerInformations", "servertype = " +JahiaConstants.SERVER_TOMCAT );

                // try to get the server home disk path
                String contextRealPath = context.getRealPath("/" + config.getServletName());
                String jahiaRealPath = JahiaTools.replacePattern(contextRealPath,config.getServletName(),"");
                jahiaRealPath = JahiaTools.replacePattern(jahiaRealPath,File.separator+"."+File.separator,File.separator);

                File jahiaDir = new File(jahiaRealPath);					// ../tomcat/webapps/jahia
                JahiaConsole.println("getServerInformations", "jahia dir name = " + jahiaDir.getAbsolutePath() );

                String webAppPath = jahiaDir.getParent();
                File webAppDir = new File(webAppPath);
                JahiaConsole.println("getServerInformations", "webapp dir = " + webAppDir.getAbsolutePath() );

                String tomcatPath = webAppDir.getParent();
                File tomcatDir = new File(tomcatPath);

                JahiaConsole.println("getServerInformations", "tomcat dir name = " + tomcatDir.getName() );

                /*
                File tomcatParentDir = tomcatDir.getParentFile();
                File[] files = tomcatParentDir.listFiles();
                for ( int i=0 ; i<files.length ; i++ ){
                    if ( files[i].isDirectory() && (files[i].getName().indexOf(JahiaConstants.SERVER_TOMCAT) != -1) ){
                        JahiaConsole.println("getServerInformations",
                        "Files[i] = " + files[i].getAbsolutePath() );
                        tomcatDir = files[i];
                        break;
                    }
                }
                */

                JahiaConsole.println("getServerInformations", "tomcat real path = " + tomcatDir.getAbsolutePath() );

                String serverPath = tomcatDir.getAbsolutePath();

                if ( !serverPath.endsWith(File.separator) ){
                    serverPath+=File.separator;
                }

                infos.put("home", serverPath);

            } else {
                infos.put("type", "unknown");
                infos.put("home", "unknown");
            }
            return infos;
        }
    } // end getServerInformations



} // end ServletContainerUtils