[23.03.03]

• web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee https://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

	<!-- The definition of the Root Spring Container shared by all Servlets and Filters -->
	
	<!-- 3) ContextLoaderListener => Context 파일을 호출 
		=> root-context.xml 실행-->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>/WEB-INF/spring/root-context.xml</param-value>
	</context-param>
	
	<!-- Creates the Spring Container shared by all Servlets and Filters -->
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>

	<!-- Processes application requests -->
	
	<!-- 2) appServlet 이름을 찾아오면 DispatcherServlet 동작 (서블릿으로 이동하겠다)
	 		=> 서블릿을 지정 servlet-context.xml -->
	<servlet>
		<servlet-name>appServlet</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>/WEB-INF/spring/appServlet/servlet-context.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>
		
	<!-- 1) 가상주소가 /로 시작하는 주소가 들어오면 => 모든 주소 
	     => servlet-name 동일한 곳을 찾아감   -->
	<servlet-mapping>
		<servlet-name>appServlet</servlet-name>
		<url-pattern>/</url-pattern> 

	</servlet-mapping>

</web-app>

servlet-context.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/mvc"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:beans="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd
		http://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">

	<!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->
	
	<!-- Enables the Spring MVC @Controller programming model -->
	
	<!-- 2) 패키지 검색하면 annotation(@) 찾음 => 기능 부여 => 기능에 따라서 자동으로 동작  -->
	<annotation-driven />

	<!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory -->
	<!-- 4) 이미지, 자바스크립트, css 파일 위치 설정 -->
	<resources mapping="/resources/**" location="/resources/" />

	<!-- Resolves views selected for rendering by @Controllers to .jsp resources in the /WEB-INF/views directory -->	
	<!-- 3) jsp 파일 위치 설정 prefix 접두사, suffix 접미사 -->
	<beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<beans:property name="prefix" value="/WEB-INF/views/" />
		<beans:property name="suffix" value=".jsp" />
	</beans:bean>
	
	<!-- 1) 패키지 자동으로 스캔(검색) -->
	<context:component-scan base-package="com.itwillbs.myweb" /> <!-- 이 폴더를 자동 스캔해서 동작 -->
	
	
</beans:beans>

root-context.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans.xsd">
	
	<!-- Root Context: defines shared resources visible to all other web components -->
	<!-- 데이터베이스 설정 -->
</beans>

HomeController.java

package com.itwillbs.myweb;

import java.text.DateFormat;
import java.util.Date;
import java.util.Locale;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

/**
 * Handles requests for the application home page.
 */
// 1) 자바파일 => @Controller 주소매핑 역할 부여 => 파일 동작
@Controller // 자동화 시켜주는 역할
public class HomeController {
	// 주소매핑 작업
	private static final Logger logger = LoggerFactory.getLogger(HomeController.class);
	
	/**
	 * Simply selects the home view to render by returning its name.
	 */
	// 2) 메서드 => @RequestMapping 하나씩 주소 매핑 => 가상주소 자동으로 뽑아와서 value="/" 비교
	// => 전송 방식 method = RequestMethod.GET 확인 => 메서드 자동으로 동작
	@RequestMapping(value = "/", method = RequestMethod.GET)
	public String home(Locale locale, Model model) {
		// 로고 출력 sysout 해도 됨
		logger.info("Welcome home! The client locale is {}.", locale);

		// 날짜객체 생성 => 날짜 모양설정
		Date date = new Date();
		DateFormat dateFormat = DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG, locale);
		
		String formattedDate = dateFormat.format(date);
		
		// request => 스프링 model 데이터 담기
		model.addAttribute("serverTime", formattedDate );
		
		// /WEB-INF/views/파일이름.jsp
		// /WEB-INF/views/home.jsp
		return "home";
	}
	
}

-home.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ page session="false" %>
<html>
<head>
	<title>Home</title>
</head>
<body>
<h1>
	Hello world!  
</h1>

<P>  The time on the server is ${serverTime}. </P>
</body>
</html>

가상 주소 http ://localhost:8080/myweb/ 주소매핑 -> home.jsp
가상 주소 http ://localhost:8080/myweb/insert.me 주소매핑 -> insert.jsp
가상 주소 http ://localhost:8080/myweb/write 주소매핑 -> write.jsp

• views 폴더에 insert.jsp , wirte.jsp 파일 만들기
  

• 컨트롤러에 메서드 추가

	@RequestMapping(value = "/insert.me", method = RequestMethod.GET)
	public String insert() {
		// 처리작업
		// 
		// /WEB-INF/views/insert.jsp
		
		return "insert";
	}
	
	@RequestMapping(value = "/write", method = RequestMethod.GET)
	public String write() {
		// 처리작업
		// /WEB-INF/views/write.jsp
		
		return "write";
	}