/**

      * 加载Properties文件

      * @param path Properties文件路径

      * @return

      */

     private static Properties getClasspathProperties(String path) {

         Assert.notNull(path);

         InputStream in = null;

         try {

             File file = new File(SysUtils.class.getResource("/").getPath() + path);

             in = new FileInputStream(file);

             Properties properties = new Properties();

             properties.load(in);

             return properties;

         } catch (IOException e) {

             throw new SysException("无法读取资源文件：[{}]，错误信息：{}", path, e.getMessage());

         } finally {

             if (null != in) {

                 try {

                     in.close();

                 } catch (IOException e) {

                     throw new SysException("无法读取资源文件：[{}]，错误信息：{}", path, e.getMessage());

                 }

             }

         }

     }

     /**

      * 获取Properties中key对应的value值

      * @param properties Properties

      * @param key 键

      * @param defaultValue 默认值

      * @return

      */

     private static String getProperty(Properties properties, String key, String defaultValue) {

         Assert.notNull(properties);

         Assert.hasLength(key);

         String value = null;

         if (properties.containsKey(key)) {

             value = properties.getProperty(key);

         } else {

             LOG.info("未发现配置：" + key);

         }

         if (StringUtils.isBlank(value)) {

             value = defaultValue;

         }

         LOG.debug("获取到值为{}",value);

         return value;

     }