Properties工具类

 /**
      * 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;
     }