consoleconfiguration.java

Java Mail Server JAVA编写的邮件服务器

/****************************************************************
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.     *
 *                                                              *
 * Copyright 2008 Jun Li(SiChuan University, the School of      *
 * Software Engineering). All rights reserved.                  *
 *                                                              *
 * Licensed to the JMS under one  or more contributor license   *
 * agreements.  See the LICENCE file  distributed with this     *
 * work for additional information regarding copyright          *
 * ownership.  The JMS licenses this file  you may not use this *
 * file except in compliance  with the License.                 *
 *                                                              *
 * Unless required by applicable law or agreed to in writing,   *
 * software distributed under the License is distributed on an  *
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
 * KIND, either express or implied.  See the License for the    *
 * specific language governing permissions and limitations      *
 * under the License.                                           *
 ****************************************************************/
package org.jpxx.mail.plugin.console;

import java.io.File;
import java.io.FileInputStream;
import java.io.PrintWriter;
import java.util.Date;
import java.util.Enumeration;
import java.util.Properties;

/**
 * JMSConsole Configuration.
 * 
 * @author Jun Li
 * @version $Revision: 0.0.3 $, $Date: 2008/09/07 $
 * @since JMS 0.0.3
 */
public class ConsoleConfiguration {

    private Properties p = null;
    /**
     * Config file path
     */
    private final String PATH = "JMS" + File.separator + "Config" +
            File.separator + "JMSConsole.properties";

    public ConsoleConfiguration() {
        
    }

    public String getProperty(String key) {
        loadProperties();
        return p.getProperty(key);
    }

    public void setProperty(String key, String value) {
        loadProperties();
        if (p.isEmpty()) {
            return;
        }
        Enumeration keys = p.keys();
        String content = "";
        while (keys.hasMoreElements()) {
            String theKey = keys.nextElement().toString();
            String theValue = "";
            if (theKey.equals(key)) {
                theValue = value;
            } else {
                theValue = p.getProperty(theKey);
            }
            content += theKey + "=" + theValue + "\r\n";
        }

        try {
            PrintWriter out = new PrintWriter(PATH);
            out.println("# JMS Console Configuration. Jun Li all right reserved!");
            out.println("# Last modified:");
            out.println("# " + new Date() + "\r\n");
            out.println(content);
            out.close();
        } catch (Exception e) {
        }
    }

    public void appendProperty(String key, String value) {
        loadProperties();        
        Enumeration keys = p.keys();
        String content = "";
        while (keys.hasMoreElements()) {
            String theKey = keys.nextElement().toString();
            
            if (theKey.equals(key)) {
                return;
            }
            String theValue = p.getProperty(theKey);
            content += (theKey + "=" + theValue + "\r\n");
        }

        content += (key + "=" + value);

        try {
            PrintWriter out = new PrintWriter(PATH);
            out.println("# JMS Console Configuration. Jun Li all right reserved!");
            out.println("# Last modified:");
            out.println("# " + new Date());
            out.println();
            out.println(content);
            out.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    
    /**
     * load properties object
     */
    private void loadProperties(){
        if (p == null) {
            p = new Properties();
        }
        // Must reload.
        try {
            p.load(new FileInputStream(PATH));
        } catch (Exception e) {
            //System.err.println(e);
        }
    }
}