try {

            //如果是web方式运行。。

            WebApplicationContext web = ContextLoader.getCurrentWebApplicationContext();

            ServletContext context = web.getServletContext();

            libPath = context.getRealPath("WEB-INF/c_lib");

        } catch (NoClassDefFoundError err) {

            //非 web 方式

            // err.printStackTrace();

            try {

                libPath = URLDecoder.decode(SigarUtil.class.getClassLoader().getResource("clib").getFile(), "utf-8");

            } catch (UnsupportedEncodingException ex) {

                ex.printStackTrace();

            }

        } catch (Exception e) {

            throw new RuntimeException("发生了异常 : " + e.getCause() + ",原因 : " + e.getMessage());

        }