0. Spring Framework 시작하기(설정)

스프링이란 보통 스프링 프레임워크를 말하는데, DI 지원, AOP 지원, MVC 웹 프레임워크 제공, JDBC/JPA 등 DB연동 지원 등의 기능이 주요 특징이다. 

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• Maven: 프로젝트 형상관리 automatically
• how to?(Dynamic project ro Maven Project) Project>우클릭>config>convert to Maven Project

spring.io>PROJECT>Spring Framework

//스프링 관련 라이브러리를 긁어와서 쓰면 됩니다.

<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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>Spring1705</groupId>
  <artifactId>Spring1705</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  <build>
    <sourceDirectory>src</sourceDirectory>
    <plugins>
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.3</version>
        <configuration>
          <source>1.8</source>
          <target>1.8</target>
        </configuration>
      </plugin>
      <plugin>
        <artifactId>maven-war-plugin</artifactId>
        <version>2.6</version>
        <configuration>
          <warSourceDirectory>WebContent</warSourceDirectory>
          <failOnMissingWebXml>false</failOnMissingWebXml>
        </configuration>
      </plugin>
    </plugins>
  </build>
  <dependencies><!-- dependency-tree -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>5.0.2.RELEASE</version>
    </dependency>
</dependencies>
</project>

http://mvnrepository.com/ > 

Spring TestContext Framework » 5.0.2.RELEASE

<dependency><!-- https://mvnrepository.com/artifact/org.springframework/spring-test -->
	    <groupId>org.springframework</groupId>
	    <artifactId>spring-test</artifactId>
	    <version>5.0.2.RELEASE</version>
	    <scope>test</scope>
	</dependency>

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DI란? 의존성을 최대한 낮추는 작업. 외부 환경이 바뀌더라도 내부가 받는 영향을 최소화 시키기 위한 작업.