Intellij에서 Spring MVC 시작하기

Intellij에서 Spring MVC를 이용하여 Hello World를 띄우기 까지 매우 많은 삽질을 통해 해결했다. 많은 이들이 포스팅을 통해서 삽질을 그나마 줄일 수 있다면 좋겠다.

Intellij Maven Project 만들기

New Project - Maven - Create from archetype(해제하기)

Project SpringMVC Framework 추가하기

Add Framework Support

Spring - Spring MVC 체크하기

Spring MVC Library 다운로드 완료 후 Project 모습

web.xml 변경하기

servlet-mapping의 url-pattern변경하기 : *.form -> /
변경 전 web.xml

변경 후 web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/applicationContext.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>/</url-pattern> <!-- *.form -> / 바꾸기-->
    </servlet-mapping>
</web-app>

라이브러리 추가해주기

Project Structure - Artifacts에 들어간다.

Available Elements 아래에 있는 Library를 더블 클릭한다.

Spring-4.3.6-RELEASE to artifact
Spring MVC-4.3.6-RELEASE to artifact

옮겨진 모습

dispatcher-servlet.xml에 추가하기

Annotation 활성화 & component-scan 파일 지정하기

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">

    <mvc:annotation-driven></mvc:annotation-driven> <!-- Annotation 활성화 -->
    <context:component-scan base-package="Controller"></context:component-scan> <!-- Component 패키지 지정 -->

    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>

</beans>

Annotation 활성화를 안해주면 bean을 하나하나 다 등록 해야 하는 어려움이 있다.
component-scan 패키지를 지정해주지 않으면 spring-framework가 scan을 못하여 작동하지 않게 된다.

views 디렉토리 파일 만들기 & index.jsp 이동시키기

New - Directory

index.jsp

<%--
  Created by IntelliJ IDEA.
  User: NESOY
  Date: 2017-02-04
  Time: 오후 11:41
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
  <head>
    <title>$Title$</title>
  </head>
  <body>
  Hello Spring World
  </body>
</html>

Controller 디렉토리 만들기 & 간단한 Controller code

New - Directory

package Controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

/**
 * Created by NESOY on 2017-02-04.
 */
@Controller
public class controller {

    @RequestMapping(value = "/")
    public String test(){
        return "index";
    }
}