@RequestMapping("/config")
	@ResponseBody
	public void config() {
		try {
			Properties properties = PropertiesLoaderUtils.loadProperties(new ClassPathResource("/config.properties"));
			for(String key : properties.stringPropertyNames()) {
				  String value = properties.getProperty(key);
				  System.out.println(key + " => " + value);
			}
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}