Spring -> Springboot

Welcome to Seoyun Dev Log·2022년 11월 22일

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Springboot로 전환하기 전 꼭 알아야할 것들

⭐️⭐️https://d2.naver.com/helloworld/5626759
https://suzyalrahala.tistory.com/37

pom.xml 설정

<dependencies>
		<!-- spring container(core) -->

		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
			<version>${org.springframework-version}</version>
		</dependency>
		
		<!-- Spring Web -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-web</artifactId>
			<version>${org.springframework-version}</version>
		</dependency>
		
		<!-- Spring MVC -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
			<version>${org.springframework-version}</version>
		</dependency>
		
		<!-- jstl -->
		<dependency>
	        <groupId>javax.servlet</groupId>
	        <artifactId>jstl</artifactId>
	        <version>1.2</version>
		</dependency>
		
		<!-- Oracle JDBC -->
		<dependency>
			<groupId>com.oracle.database.jdbc</groupId>
			<artifactId>ojdbc6</artifactId>
			<version>11.2.0.4</version>
		</dependency>
		
		<!-- spring jdbc(DataSource) -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-jdbc</artifactId>
			<version>${org.springframework-version}</version>
		</dependency>

		<!-- MyBatis -->
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis</artifactId>
			<version>3.2.2</version>
		</dependency>
		
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis-spring</artifactId>
			<version>1.2.0</version>
		</dependency>
				
		<!-- jackson (json)-->
		<dependency>
			
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-databind</artifactId>
			<version>2.8.7</version>
			
		</dependency>
		
		<!-- common fileupload -->
		<dependency>
			<groupId>commons-fileupload</groupId>
			<artifactId>commons-fileupload</artifactId>
			<version>1.3.3</version>
		</dependency>
		
		<dependency>
			<groupId>commons-io</groupId>
			<artifactId>commons-io</artifactId>
			<version>2.4</version>
		</dependency>
		
		<!-- http components - http client & http core (rest template) -->
		 <dependency>
		    <groupId>org.apache.httpcomponents</groupId>
		    <artifactId>httpclient</artifactId>
		    <version>4.5.2</version>
		</dependency>
		
		<dependency>
		    <groupId>org.apache.httpcomponents</groupId>
		    <artifactId>httpcore</artifactId>
		    <version>4.4.15</version>
		</dependency>
		
		<!-- https://mvnrepository.com/artifact/org.json/json -->
		<dependency>
		    <groupId>org.json</groupId>
		    <artifactId>json</artifactId>
		    <version>20201115</version>
		</dependency>

		<!--mysql-->
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>8.0.30</version>
		</dependency>

		<dependency>
			<groupId>commons-dbcp</groupId>
			<artifactId>commons-dbcp</artifactId>
			<version>1.4</version>
		</dependency>

		<!--springboot-->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
			<version>2.7.5</version>
		</dependency>

	</dependencies>

/*
 * This file was generated by the Gradle 'init' task.
 */

plugins {
    id 'java'
    id 'maven-publish'
}

repositories {
    mavenLocal()
    maven {
        url = uri('https://repo.maven.apache.org/maven2/')
    }
    mavenCentral()
}

dependencies {
    implementation 'com.oracle.database.jdbc:ojdbc6:11.2.0.4'
    implementation 'org.springframework:spring-jdbc:5.3.23'
    implementation 'org.mybatis:mybatis:3.5.11'
    implementation 'org.mybatis:mybatis-spring:2.0.7'
    implementation 'com.fasterxml.jackson.core:jackson-databind:2.8.7'
    implementation 'commons-fileupload:commons-fileupload:1.4'
    implementation 'commons-io:commons-io:2.4'
    implementation 'org.apache.httpcomponents:httpclient:4.5.2'
    implementation 'org.apache.httpcomponents:httpcore:4.4.15'
    implementation 'org.json:json:20201115'
    implementation 'mysql:mysql-connector-java:8.0.30'
    implementation 'commons-dbcp:commons-dbcp:1.4'
    implementation 'org.springframework.boot:spring-boot-starter-web:2.7.5'
    compileOnly 'org.projectlombok:lombok:1.18.24'
    annotationProcessor 'org.projectlombok:lombok:1.18.24'

    testCompileOnly 'org.projectlombok:lombok:1.18.24'
    testAnnotationProcessor 'org.projectlombok:lombok:1.18.24'
}

group = 'boggle'
version = '0.0.1-SNAPSHOT'
description = 'boggle'
java.sourceCompatibility = JavaVersion.VERSION_11

publishing {
    publications {
        maven(MavenPublication) {
            from(components.java)
        }
    }
}

기존 라이브러리
- JDK 8
- Maven
- Apache Tomcat 8.5
- Spring Framwork
- log X
- Junit, Mockito X
- JSP, JSTL
변경 라이브러리
- JDK 11
- Gradle
- Embedded Tomcat
- Spring Boot 2.7.5
- spring-boot-starter-logging
- spring-boot-starter-test
- JSP, JSTL 제거

01. JDK 버전 변경

<plugin>
      <artifactId>maven-compiler-plugin</artifactId>
      <version>3.8.1</version>
      <configuration>
        <release>11</release>
      </configuration>
</plugin>

02. gradle 변경

https://bohemichan.tistory.com/49

1) packaging 방식이 WAR인 경우, JSP 사용할 경우

: jar는 Java Archive의 약자로 자바 환경 위에서 바로 동작할 수 있는 애플리케이션이다
war는 Web Application Archive의 약자로 JSP 혹은 Servlet처럼 WAS 컨테이너 위에서 동작할 수 있는 패키징 방식이다

springboot가 패키징하는 JAR 내부에 Tomcat이 내장되어있기 때문에 JAR로 패키징 되어도 WAR 파일이 구동되는것이다.
이러한 환경 때문에 springboot의 디폴트는 jar 빌드(패키징)이다

이런 환경에서 JSP를 띄우려면 내장 톰캣 모듈을 따로 설정해 줘야한다.

implementation 'org.apache.tomcat.embed:tomcat-embed-jasper:10.1.2'

gradle 사용시 spring-boot-starter-parent를 임포트하지 않아도 되는 이유
https://www.inflearn.com/chats/227298

2) spring-framwork와 spring-jdbc 버전을 맞춰 줘야한다

[JAVA] java.lang.IllegalStateException: Error processing condition on org.springframework.boot.autoconfigure.transaction.TransactionAutoConfiguration$EnableTransactionManagementConfiguration