Java可读取操作系统的配置

 /**
      * Java获取操作系统的配置环境
      * @throws Exception
      */
     @Test
     public void testPro() throws Exception {
         Properties properties = System.getProperties();
         for(Entry<Object, Object> entry:properties.entrySet()){
             System.out.println(entry.getKey()+"============="+entry.getValue());
         }

         //获取从根目录到项目名的路径
         String path = System.getProperty("user.dir");
         System.out.println(path);
     }