[웹][자바][스프링] IntelliJ 에서 Spring Java based configuration 사용하기

spring 3.0 mvc config on source code / source code config / spring java based configuration / 자바로 config / 자바로 설정 / configuration on java / spring code based configuration




IntelliJ 에서 Spring 3.0 에서 도입된 Java based configuration 을 사용해서 간단한 project 를 만들어 보자.

Sprinb MVC project 생성

아래 설명을 따라서 Spring MVC project 를 생성하자.

• Getting Started with Spring MVC, Hibernate and JSON - IntelliJ IDEA - Confluence

그러면 기본적으로

• mvc-dispatcher-servlet.xml

을 설정 file 로 이용하는 template 을 만들 수 있다.

Java based configuration 으로 전환

이제 이녀석을 mvc-dispatcher-servlet.xml 대신에 MvcConfiguration.java 를 사용하도록 수정 해 보자. 전환하는 절차는 아래와 같다.

1. MvcConfiguration 추가
2. mvc-dispatcher-servlet.xml 삭제
3. web.xml 수정

MvcConfiguration 추가

먼저 MvcConfiguration 을 만들자.

// MvcConfiguration.java
package com.namh.newui.config;


import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceViewResolver;

@Configuration
/**
 * <context:component-scan base-package="com.springapp.mvc"/>
 */
@ComponentScan("com.namh.newui")
@EnableWebMvc
public class MvcConfiguration extends WebMvcConfigurerAdapter{

    /**
     *
     * <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
     *     <property name="prefix" value="/WEB-INF/pages/"/>
     *     <property name="suffix" value=".jsp"/>
     * </bean>
     *
     */
 @Bean
 public ViewResolver getViewResolver(){
  InternalResourceViewResolver resolver = new InternalResourceViewResolver();
  resolver.setPrefix("/WEB-INF/views/");
  resolver.setSuffix(".jsp");
  return resolver;
 }

    /**
     * <mvc:resources mapping="/resources/**" location="/resources/" />
     */ 
 @Override
 public void addResourceHandlers(ResourceHandlerRegistry registry) {
  registry.addResourceHandler("/resources/**").addResourceLocations("/resources/");
 }

 
}

mvc-dispatcher-servlet.xml 삭제

그리고 이제 사용하지 않는 mvc-dispatcher-servlet 을 삭제하자.

그러면 아래 그림처럼 파일들이 남을 것이다.

web.xml 수정

이제 web.xml 을 수정하자. 이 곳에서 mvc-dispatcher-servlet.xml 을 사용하도록 설정이 되는데, 여기를 수정하자.(참고 : How to configure Spring MVC with pure Java-based configuration? - Stack Overflow)

...
<servlet>
 <servlet-name>mvc-dispatcher</servlet-name>
 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
</servlet>

위의 설정을 아래처럼 수정하자.

<web-app version="3.0"
 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_3_0.xsd">

...

<servlet>
 <servlet-name>mvc-dispatcher</servlet-name>
 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>



        <init-param>
            <param-name>contextClass</param-name>
            <param-value>
                org.springframework.web.context.support.AnnotationConfigWebApplicationContext
            </param-value>
        </init-param>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>com.namh.config.MvcConfiguration</param-value>
        </init-param>

</servlet>

Project Structure 수정

그리고 intelliJ 설정을 조금 수정 해 주자.

• File > Project Structure > Modules > Spring > MVC mvc-dispatcher servlet context

에서 mvc-dispatcher-servlet.xml 대신에 MvcConfiguration.java 를 사용하도록 수정하자.

이제 실행을 시켜보면 된다.

Source

위에서 설명한 소스는 아래에서 download 할 수 있다.

• download source

References

• Spring Java Based Configuration
• 3. New Features and Enhancements in Spring Framework 4.0