Spring Web MVC framework
- Model-View-Controller (MVC) architecture
- Model : POJO
- View : Rendering HTML(UI), JSON(Data)
- Controller : Handle request and build model and pass to view
WebApplicationContext extends ApplicationContext
DispatcherServlet
- http request
- handle request
- Controller
- View Resolver
- View
- http response
@Controller vs @RestController
@Controller는 주로 Web 페이지의 컨트롤러에서 사용- Web 페이지용 컨트롤러는 템플릿 엔진 View나 JSP로 전환 응답의 HTML을 생성하기 때문에 기본적으로 메소드의 반환값은 View 전환 대상을 지정하는 데 사용
@RestController는 Json이나 XML 등을 반환 WebAPI 용 컨트롤러로 사용- View로 전환하지 않기 때문에 메소드의 반환값은 응답(response)의 내용(content) 표시
web.xml
<web-app id = "WebApp_ID" version = "2.4"
xmlns = "http://java.sun.com/xml/ns/j2ee"
xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation = "http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>Spring MVC Application</display-name>
<servlet>
<servlet-name>HelloWeb</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>HelloWeb</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/HelloWeb-servlet.xml</param-value>
</context-param>
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
</web-app>
<beans xmlns = "http://www.springframework.org/schema/beans"
xmlns:context = "http://www.springframework.org/schema/context"
xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation = "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/context/spring-context-3.0.xsd">
<context:component-scan base-package = "com.okdevtv.spring" />
<bean class = "org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name = "prefix" value = "/WEB-INF/jsp/" />
<property name = "suffix" value = ".jsp" />
</bean>
</beans>
package com.okdevtv.spring;
@Controller
@RequestMapping("/hello")
public class HelloController {
@RequestMapping(method = RequestMethod.GET)
public String printHello(ModelMap model) {
model.addAttribute("message", "Hello Spring MVC Framework!");
return "hello";
}
}
<html>
<head>
<title>Hello Spring MVC</title>
</head>
<body>
<h2>${message}</h2>
</body>
</html>
related
ref
OKdevTV
