关于Spring MVC
@ModelAttribute方法的问题，在控制器@RequestMapping方法中设置模型属性与通过方法分别设置属性@ModelAttribute相比，哪种方法更好，使用最多？

从设计的角度来看，从以下方面考虑哪种方法更好：

方法1

@ModelAttribute("message")
public String addMessage(@PathVariable("userName") String userName, ModelMap model) {

  LOGGER.info("addMessage - " + userName);
  return "Spring 3 MVC Hello World - "  + userName;
}

@RequestMapping(value="/welcome/{userName}", method = RequestMethod.GET)
public String printWelcome(@PathVariable("userName") String userName, ModelMap model) {

  LOGGER.info("printWelcome - " + userName);
  return "hello";
}

方法2

@RequestMapping(value="/welcome/{userName}", method = RequestMethod.GET)
public String printWelcome(@PathVariable("userName") String userName, ModelMap model) {

  LOGGER.info("printWelcome - " + userName);

  model.addAttribute("message", "Spring 3 MVC Hello World - "  + userName);

  return "hello";
}