jahiaconsole.java

java 写的一个新闻发布系统

/********************************************************************/
/* JAHIA                                                            */
/* Class Name   :   JahiaConsole                                    */
/* Function     :   Manages Jahia console messages                  */
/* Created      :   08-10-2000                                      */
/* Author       :   Eric Vassalli                                   */
/* Interface    :                                                   */
/*      print( String )     : prints a message in console           */
/*      println( String )   : prints a message in console with \n   */
/*      startup()           : displays cool startup message :)      */
/*                                         Copyright 2002 Jahia Ltd */
/********************************************************************/

package org.jahia.utils;

import javax.servlet.*;
import java.io.*;

public class JahiaConsole {

    /**
     * Constants for logging levels {
     */
    public static final int DEFAULT_LOGGING_LEVEL = 3;
    public static final int MAX_LOGGING_LEVEL = 10;
    public static final int CONSOLE_LOGGING_LEVEL = 9;
    /**
     * }
     */

    private static String  prefix  = "Jahia > ";
    private static GenericServlet servlet = null;
    private static int currentLoggingLevel = 0;


    /***
        * constructor
        * EV    08.10.2000
        *
        */
    private JahiaConsole()
    {
        println( "JahiaConsole", "***** Starting Jahia Console" );
    } // end constructor


    public static void setServlet(GenericServlet servletRef) {
        servlet = servletRef;
    }

    public static void setLoggingLevel(int level) {
        currentLoggingLevel = level;
    }

    /***
        * print
        * EV    08.10.2000
        *
        */
    public static void print( String origin, String msg )
    {
        if (servlet != null) {
            if (currentLoggingLevel >= DEFAULT_LOGGING_LEVEL) {
              servlet.log(origin + " > " + msg);
            }
        }
//        System.out.print( prefix + origin + " > " + msg );
    } // end print


    /***
        * println
        * EV    08.10.2000
        *
        */
    public static void println( String origin, String msg )
    {

        if (servlet != null) {
            if (currentLoggingLevel >= DEFAULT_LOGGING_LEVEL) {
                servlet.log(origin + " > " + msg);
            }
            if (currentLoggingLevel >= CONSOLE_LOGGING_LEVEL) {
                System.out.println (origin + "> " + msg);
            }
        }

    } // end println

    /**
     * Small utility function to print stack trace on the Jahia console.
     * @param origin a String representing the origin of the message. Recommended
     * format is class.method
     * @param t the exception whose stack trace will be dumped into the Jahia
     * Console.
     * @author Serge Huber.
     */
    public static void printe( String origin, Throwable t ) {
        String msg;
        StringWriter strWriter = new StringWriter();
        PrintWriter ptrWriter = new PrintWriter(strWriter);
        t.printStackTrace(ptrWriter);
        msg = strWriter.toString();
        if (servlet != null) {
            if (currentLoggingLevel >= DEFAULT_LOGGING_LEVEL) {
                servlet.log(origin + " > " + msg);
            }
            if (currentLoggingLevel >= CONSOLE_LOGGING_LEVEL) {
                System.out.println (origin + "> " + msg);
            }
        }
    }

   /**
    * Prints a message on the console.
    * THIS METHOD SHOULD BE CALLED ONLY IF YOU WANT YOUR MESSAGE TO BE DISPLAYED IN THE
    * RELEASE VERSION OF JAHIA.  Don't abuse ;-)
    */
    public static synchronized void finalPrintln( String origin, String msg )
    {
        System.out.println (origin + "> " + msg);
    } // end println
    public static synchronized void finalPrint( String origin, String msg )
    {
        System.out.print (origin + "> " + msg);
    } // end println



    /***
        * startup
        * EV    08.10.2000
        *
        */
    public static void startup( int buildNumber )
    {
        String msg = "";
        msg += "***********************************\n";
        msg += "   Starting Jahia - Build " + buildNumber + "\n";
        msg += "       \"Today's a great day ! \"\n";
        msg += "***********************************\n";
        JahiaConsole.println("JahiaConsole.startup","\n\n" + msg + "\n" );
        println( "Jahia", "***** Starting Jahia *****" );
    } // end startup



    /***
        * startupWithTrust
        * AK    20.01.2001
        *
        */
    public static void startupWithTrust( int buildNumber )
    {
        Integer      buildNumberInteger  = new Integer(buildNumber);
        String       buildString         = buildNumberInteger.toString();
        StringBuffer buildBuffer         = new StringBuffer();

        for(int i=0; i < buildString.length(); i++) {
            buildBuffer.append(" ");
            buildBuffer.append(buildString.substring(i, i+1));
        }

        StringBuffer msg = new StringBuffer ("\n\n\n\n");
        msg.append ("                                  ____.\n");
        msg.append ("                      __/\\ ______|    |__/\\.     _______\n");
        msg.append ("           __   .____|    |       \\   |    +----+       \\\n");
        msg.append ("   _______|  /--|    |    |    -   \\  _    |    :    -   \\_________\n");
        msg.append ("  \\\\______: :---|    :    :           |    :    |         \\________>\n");
        msg.append ("          |__\\---\\_____________:______:    :____|____:_____\\\n");
        msg.append ("                                     /_____|\n");
        msg.append ("\n");
        msg.append ("      . . . s t a r t i n g   j a h i a   b u i l d  " + buildBuffer.toString() + " . . .\n");
        msg.append ("\n\n");
        msg.append ("     Copyright 2002 - jahia http://www.jahia.org - all rights reserved\n");
        msg.append ("\n\n");
        msg.append (" **************************************************************************\n");
        msg.append (" * The contents of this file, or the files included with this file, are   *\n");
        msg.append (" * subject to the current version of JAHIA Community Source License for   *\n");
        msg.append (" * the Jahia Portal Server (the \"License\"); You may not use this file     *\n");
        msg.append (" * except in compliance with the License. You may obtain a copy of the    *\n");
        msg.append (" * License at http://www.jahia.org. See the License for the rights,       *\n");
        msg.append (" * obligations and limitations governing use of the contents of the file. *\n");
        msg.append (" * The Original and Upgraded Code is the Jahia Portal Server. The         *\n");
        msg.append (" * developer of the Original and Upgraded Code is JAHIA Ltd. JAHIA Ltd.   *\n");
        msg.append (" * owns the copyrights in the portions it created. All Rights Reserved.   *\n");
        msg.append (" **************************************************************************\n");
        msg.append ("\n\n");

        System.out.println (msg.toString());
        System.out.flush();
    } // end startupWithTrust

}