propertiesloader.java

java三层架构（MVC)实现的在线图书销售系统。其中应用到工厂

package accp.yyw.model.tool;

import java.util.Properties;
import java.util.PropertyResourceBundle;
import java.util.Enumeration;
import java.io.FileNotFoundException;

/**
 * <p>Title: BookShop</p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2005</p>
 * <p>Company: accp</p>
 * @author yyw
 * @version 1.0
 */


public class PropertiesLoader {

          private java.util.Properties properties;

          public PropertiesLoader() {

            super();
          }

           public java.util.Properties getProperties(String propertiesfilename) throws java.io.FileNotFoundException {

                   if (properties == null) {

                           java.util.PropertyResourceBundle propertyresourcebundle = null;

            System.out.print("Loading configuration from FILES(" + propertiesfilename + ".properties)...");

            propertyresourcebundle = (PropertyResourceBundle) PropertyResourceBundle.getBundle(propertiesfilename);

            System.out.println(" ok !");

            Enumeration enumeration = propertyresourcebundle.getKeys();

            properties = new Properties();

            while (enumeration.hasMoreElements()) {

                    String propertyname = enumeration.nextElement().toString();

                properties.setProperty(propertyname,propertyresourcebundle.getString(propertyname));
            }
        }

        return properties;
    }
}