====== Spring @MVC HandlerMethodArgumentResolver ======
  * [[http://static.springsource.org/spring/docs/3.1.x/javadoc-api/org/springframework/web/method/support/HandlerMethodArgumentResolver.html|HandlerMethodArgumentResolver]] Spring 3.1이상 지원.
  * 컨트롤러 메소드에 파라미터로 객체를 주입할 수 있게 된다.
  * [[http://blog.42.nl/articles/leveraging-the-spring-mvc-3.1-handlermethodargumentresolver-interface|42 B.V.: Leveraging the Spring MVC 3.1 HandlerMethodArgumentResolver interface]]

===== 구현 =====
  * ''public boolean supportsParameter(MethodParameter parameter)'' : Resolver가 해당 파라미터에 적용 가능한지 여부를 검사하여 true/false 리턴
  * ''Object resolveArgument(MethodParameter parameter, ModelAndViewContainer mavContainer, NativeWebRequest webRequest, WebDataBinderFactory binderFactory) throws Exception'' : 파라미터 인자와 기타 정보등을 통해서 실제 객체를 생성하여 리턴하면 해당 객체가 컨트롤러 메소드의 인자로 들어가게 된다.

===== 적용 =====
<code xml>
<mvc:annotation-driven>
    <mvc:argument-resolvers>
        <bean class="kr.pe.kwonnam.someproject.LoginUserHandlerMethodArgumentResolver"/> <!--일반 Bean 주입 -->
    </mvc:argument-resolvers>
</mvc:annotation-driven>
</code>
혹은 java-config에서
<code java>
@Override
protected void addArgumentResolvers(List<HandlerMethodArgumentResolver> argumentResolvers) {
    super.addArgumentResolvers(argumentResolvers);
    argumentResolvers.add(myArgumentResolver());
    // ....
}
</code>
===== MethodParameter =====
  * [[http://static.springsource.org/spring/docs/3.1.x/javadoc-api/org/springframework/core/MethodParameter.html|MethodParameter]]
  * 지정된 파라미터에 대한 각종 정보와 어노테이션 등을 읽어올 수 있다.
===== ModelAndViewContainer =====
  * [[http://static.springsource.org/spring/docs/3.1.x/javadoc-api/org/springframework/web/method/support/ModelAndViewContainer.html|ModelAndViewContainer]]

===== NativeWebRequest =====
  * [[http://static.springsource.org/spring/docs/3.1.x/javadoc-api/org/springframework/web/context/request/NativeWebRequest.html|NativeWebRequest]] : HttpServletRequest를 확보할 수 있다.
  * PathVariable 읽기
<code java>
HttpServletRequest httpServletRequest = webRequest.getNativeRequest(HttpServletRequest.class);
Map<String,String> pathVariables = (Map<String, String>) httpServletRequest.getAttribute(HandlerMapping.URI_TEMPLATE_VARIABLES_ATTRIBUTE);
// pathVariables 맵에 정보가 저장 됨.
</code>

===== WebDataBinderFactory =====
  * [[http://static.springsource.org/spring/docs/3.1.x/javadoc-api/org/springframework/web/bind/support/WebDataBinderFactory.html|WebDataBinderFactory]]