public class Config {
  private static PropertiesConfiguration propConfig;
  private static final Config CONFIG = new Config();
  /**
   * 自动保存
   */
  private static boolean autoSave = true;
  private Config() {
  }
  public static Config getInstance(String propertiesFile) {
    //执行初始化 
    init(propertiesFile);
    return CONFIG;
  }
  /**
   * 初始化
   *
   * @param propertiesFile
   * @see
   */
  private static void init(String propertiesFile) {
    try {
      propConfig = new PropertiesConfiguration(propertiesFile);
      //自动重新加载 
      propConfig.setReloadingStrategy(new FileChangedReloadingStrategy());
      //自动保存 
      propConfig.setAutoSave(autoSave);
    } catch (ConfigurationException e) {
      e.printStackTrace();
    }
  }
  /**
   * 根据Key获得对应的value
   *
   * @param key
   * @return
   * @see
   */
  public Object getValue(String key) {
    return propConfig.getProperty(key);
  }
  /**
   * 设置属性
   *
   * @param key
   * @param value
   * @see
   */
  public void setProperty(String key, String value) {
    propConfig.setProperty(key, value);
  }
}