5장 part2 스프링 MVC 23-6-7

인텔리 제이로 레거시 프로젝트 적용하기

의존성 주입

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.tom</groupId>
    <artifactId>webtomcat</artifactId>
    <version>1.0-SNAPSHOT</version>
    <name>webtomcat</name>
    <packaging>war</packaging>

    <properties>
        <java-version>11</java-version>
        <org.springframwork-version>5.3.20</org.springframwork-version>
        <org.aspectj-version>1.6.10</org.aspectj-version>
        <org.slf4j-version>1.6.6</org.slf4j-version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.target>11</maven.compiler.target>
        <maven.compiler.source>11</maven.compiler.source>
        <junit.version>5.9.1</junit.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>4.0.1</version>
            <scope>provided</scope>
        </dependency>

        <!--        Test-->



        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-api</artifactId>
            <version>5.9.2</version>
            <scope>test</scope>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-engine -->
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-engine</artifactId>
            <version>5.9.2</version>
            <scope>test</scope>
        </dependency>

<!--        롬복-->
        <!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.28</version>
            <scope>provided</scope>
        </dependency>


<!--        스프링-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${org.springframwork-version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${org.springframwork-version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${org.springframwork-version}</version>
        </dependency>



        <!-- https://mvnrepository.com/artifact/javax.servlet/jstl -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>

<!--        로그4j  slf4j-->


        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-slf4j-impl</artifactId>
            <version>2.10.0</version>
        </dependency>


<!--        aspectj-->
        <dependency>
            <groupId>aspectj</groupId>
            <artifactId>aspectjrt</artifactId>
            <version>1.5.4</version>
        </dependency>

<!--        서블릿-->

        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>4.0.1</version>
            <scope>provided</scope>
        </dependency>



    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.5.1</version>
                <configuration>
                    <source>11</source>
                    <target>11</target>
                    <compilerArgument>-Xlint:all</compilerArgument>
                    <showWarnings>true</showWarnings>
                    <showDeprecation>true</showDeprecation>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>exec-maven-plugin</artifactId>
                <version>1.2.1</version>
                <configuration>
                    <mainClass>org.test.int1.Main</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>


<!--<failOnMissingWebXml>false</failOnMissingWebXml>-->

• 각종 의존성 주입 한 뒤 xml 대신해 config 클래스 작성
• servlet-context.xml 대신 해 ServletConfig 클래스 작성

package com.tom.webtomcat.config;

import org.springframework.context.annotation.ComponentScan;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.ViewResolverRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
import org.springframework.web.servlet.view.JstlView;

@EnableWebMvc
@ComponentScan(basePackages= {"com.tom.webtomcat.controller"})
public class ServletConfig implements WebMvcConfigurer {
    // 기존의 servlet-context.xml 을 클래스로 작성


    @Override
    public void configureViewResolvers(ViewResolverRegistry registry){
        InternalResourceViewResolver bean = new InternalResourceViewResolver();
            bean.setViewClass(JstlView.class);
            bean.setPrefix("/WEB-INF/views/"); // 위치 Prefix 위치
            bean.setSuffix(".jsp");   //형식      suffix  형식
            registry.viewResolver(bean);
    }

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry){
        registry.addResourceHandler("/resources/**").addResourceLocations("/resources/");
    }

}

• WebMvcConfigurer는 스프링 MVC와 관련된 설정을 메서드로 오버라이드 하는 형태를 이용할 때 사용
• ServletConfig 클래스 역시 @ComponentScan(basepackage = {"베이스 패키지 "})을 이용해 다른 패키지에 작성된 스프링의 객체(bean)를 인식
• ServletConfig 클래스를 정상적으로 실행하려면 WebConfig 설정을 ServletConfig를 이용하고 경로도 "/"로 변경해야 함
• WebConfig 클래스

package com.tom.webtomcat.config;

import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;

public class WebConfig extends AbstractAnnotationConfigDispatcherServletInitializer {
    @Override
    protected Class<?>[] getRootConfigClasses() {
        return new Class[] {RootConfig.class};
    }

    @Override
    protected Class<?>[] getServletConfigClasses() {
        return null;
    }

    @Override
    protected String[] getServletMappings() {
        return new String[] { "/" };  // 기본 경로 설정
    }
}