});
        final String now = String.valueOf(System.currentTimeMillis());
        helper.updateSystemProperties();
        assertNull(System.getProperty("fess." + now));
        assertNull(System.getProperty("test." + now));
        appValue.set("=abc\nfess." + now + "=test1\ntest." + now + "=test2");
        helper.updateSystemProperties();
        assertEquals("test1", System.getProperty("fess." + now));

        ComponentUtil.getLdapManager().updateConfig();
        if (resetJobs) {
            ComponentUtil.getJobManager().reboot();
        }
        updateSystemProperties();
    }

    public void updateSystemProperties() {
        final String value = ComponentUtil.getFessConfig().getAppValue();
        if (logger.isDebugEnabled()) {
            logger.debug("system.properties: {}", value);
        }

        ComponentUtil.getLdapManager().updateConfig();
        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();
        systemHelper.refreshDesignJspFiles();
        systemHelper.updateSystemProperties();

        if (StringUtil.isNotBlank(form.logLevel)) {
            systemHelper.setLogLevel(form.logLevel);
        }
    }