Spring MVC 5-4 Annotation 기반 설정

Spring MVC 5-4  Annotation 기반 설정

 

Annotation 관련 설정

Controller가 아주 많아지면? --> XML 설정 파일이 복잡해짐.

Controller도 Annotation 지원(Spring 2.5부터)

action-servlet.xml

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xsi:schemalLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/contxt/springcontext-3.0.xsd">            <context:component-scan base-package="com.multicampus.view" /> </beans>

 

<context:component-scan />을 지정

 

@Controller 사용

<context:component-scan />에 의해 bean으로 자동 등록

LoginController.java

public class LoginController  implements Controller {     public ModelAndView handleRequest(HttpServletRequest request,  HttpServletResponse response) throws Exception {         return null; }

 

applicationContext.xml

<beans ...> <bean class="com.multicampus.view.user.controller.LoginController" /> </beans>

 

 

 

LoginController.java

@Controller public class LoginController {     public String loginUser(UserVO vo){         return null; } }

 

 

 

 

 

 

 

 

@RequestMapping 사용

요청 URL 경로와 Controller Class 또는 Controlle Class 내의 메서드를 매핑함. 아래의 두 코드는 동일한 의미

LoginController.java

@Controller public class LoginController {     @RequestMapping("/loign.do") public ModelAndView login(HttpServletRequest request,            HttpServletResponse response) { } }

 

WEB-INF/spring-mvc.xml

<!-- HandlerMapping --> <bean id="handlerMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping"> <property name="mappings">            <props>                <prop key="/login.do">loginController</prop>            </props> </property> </bean> <bean id="loginController" class="com.multicampus.view.user.LoginController"/>

 

 

요청 방식에 따른 @RequestMapping 사용

요청URL은 같아도 method에 따라 다르게 처리할 수 있음

LoginController.java

package com.multicampus.view.user.controller; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; @Controller public class LoginController { @RequestMapping("/loignView.do", method=RequestMethod.GET) public String loginView(HttpServletRequest request,            HttpServletResponse response) { }     @RequestMapping("/loign.do", method=RequestMethod.POST) public String login(HttpServletRequest request,            HttpServletResponse response) { } }

 

 

컨트롤러 통합하기

너무 많은 컨트롤러 클래스들 -> 하나의 컨트롤러로 통합

@RequestMapping 에서 요청 URL을 매핑

UserController.java

@Controller("/user.do") public class UserController {            @RequestMapping(value="addUser.do")            public String addUser(UserVO vo) {                      System.out.println("=== 회원 등록 ===");                 return null;            }                     @RequestMapping(value="getUser.do")            public String getUser(UserVO vo) {                      System.out.println("=== 회원 등록 ===");                      return null;            }                     @RequestMapping(value="getUserList.do")            public String getUserList(UserVO vo) {                      System.out.println("=== 회원 등록 ===");                       return null;            } }