코딩맛집 :: AOP와 트랜잭션 처리 - 1. Spring AOP와 트랜잭션 관리

AOP와 트랜잭션 처리 - 1. Spring AOP와 트랜잭션 관리

Frameworks/Spring 2019. 9. 10. 14:38

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10. AOP와 트랜잭션.pdf

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1. Spring AOP와 트랜잭션 관리
2. 샘플 프로젝트의 생성과 AOP적용 준비
3. AOP 연습하기
4. Spring의 트랜잭션 처리
5. 게시판의 댓글 트랜잭션 처리

1. Spring AOP와 트랜잭션 관리

AOP라는 용어와 의미

관점지향 : AOP(Aspect Oriented Programming)지원
핵심 개념은 ‘공통 관심사(Cross-concern)의 분리’ (주목적은 아니다)
OOP를 보다 완성도 높게 만들어 주는 패러다임

Proxy객체

• Spring의 AOP는 메소드 단위로 만들어지며, 실제로는 원래의 객체를 감싸는 바깥쪽 Proxy객체가 만들어지는 방식으로 호출 된다.

실습하기

* 스프링 레거시 프로젝트 명 : aopExam

1. pom.xml 수정

<?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/maven-v4_0_0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>com.lje</groupId>
	<artifactId>aopexam</artifactId>
	<name>aopExam</name>
	<packaging>war</packaging>
	<version>1.0.0-BUILD-SNAPSHOT</version>
	<properties>
		<java-version>1.8</java-version>
		<org.springframework-version>5.1.9.RELEASE</org.springframework-version>
		<org.aspectj-version>1.9.4</org.aspectj-version>
		<org.slf4j-version>1.7.25</org.slf4j-version>
	</properties>
	<dependencies>
		<!-- Spring -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
			<version>${org.springframework-version}</version>
			<exclusions>
				<!-- Exclude Commons Logging in favor of SLF4j -->
				<exclusion>
					<groupId>commons-logging</groupId>
					<artifactId>commons-logging</artifactId>
				</exclusion>
			</exclusions>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
			<version>${org.springframework-version}</version>
		</dependency>

		<!-- AspectJ -->
		<dependency>
			<groupId>org.aspectj</groupId>
			<artifactId>aspectjrt</artifactId>
			<version>${org.aspectj-version}</version>
		</dependency>

		<!-- Logging -->
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-api</artifactId>
			<version>${org.slf4j-version}</version>
		</dependency>
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>jcl-over-slf4j</artifactId>
			<version>${org.slf4j-version}</version>
			<scope>runtime</scope>
		</dependency>
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-log4j12</artifactId>
			<version>${org.slf4j-version}</version>
			<scope>runtime</scope>
		</dependency>
		<dependency>
			<groupId>log4j</groupId>
			<artifactId>log4j</artifactId>
			<version>1.2.17</version>
			<exclusions>
				<exclusion>
					<groupId>javax.mail</groupId>
					<artifactId>mail</artifactId>
				</exclusion>
				<exclusion>
					<groupId>javax.jms</groupId>
					<artifactId>jms</artifactId>
				</exclusion>
				<exclusion>
					<groupId>com.sun.jdmk</groupId>
					<artifactId>jmxtools</artifactId>
				</exclusion>
				<exclusion>
					<groupId>com.sun.jmx</groupId>
					<artifactId>jmxri</artifactId>
				</exclusion>
			</exclusions>
			<scope>runtime</scope>
		</dependency>

		<!-- @Inject -->
		<dependency>
			<groupId>javax.inject</groupId>
			<artifactId>javax.inject</artifactId>
			<version>1</version>
		</dependency>

		<!-- Servlet -->
		<!-- <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> 
			<version>2.5</version> <scope>provided</scope> </dependency> -->
		<!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>javax.servlet-api</artifactId>
			<version>3.1.0</version>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>javax.servlet.jsp</groupId>
			<artifactId>jsp-api</artifactId>
			<version>2.1</version>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>jstl</artifactId>
			<version>1.2</version>
		</dependency>

		<!-- Test -->
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.12</version>
			<scope>test</scope>
		</dependency>
		<!-- https://mvnrepository.com/artifact/org.springframework/spring-test -->
		<!-- 스프링프레임워크 랑 똑같은 버전으로 -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-test</artifactId>
			<version>5.1.9.RELEASE</version>
			<scope>test</scope>
		</dependency>
		<!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
			<version>1.18.8</version>
			<scope>provided</scope>
		</dependency>
		<!-- https://mvnrepository.com/artifact/org.aspectj/aspectjrt -->
		<dependency>
			<groupId>org.aspectj</groupId>
			<artifactId>aspectjrt</artifactId>
			<version>1.9.4</version>
		</dependency>
		<!-- https://mvnrepository.com/artifact/org.aspectj/aspectjweaver -->
		<dependency>
			<groupId>org.aspectj</groupId>
			<artifactId>aspectjweaver</artifactId>
			<version>1.9.4</version>
		</dependency>

	</dependencies>
	<build>
		<plugins>
			<plugin>
				<artifactId>maven-eclipse-plugin</artifactId>
				<version>2.9</version>
				<configuration>
					<additionalProjectnatures>
						<projectnature>org.springframework.ide.eclipse.core.springnature</projectnature>
					</additionalProjectnatures>
					<additionalBuildcommands>
						<buildcommand>org.springframework.ide.eclipse.core.springbuilder</buildcommand>
					</additionalBuildcommands>
					<downloadSources>true</downloadSources>
					<downloadJavadocs>true</downloadJavadocs>
				</configuration>
			</plugin>
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>2.5.1</version>
				<configuration>
					<source>1.8</source>
					<target>1.8</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>

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee https://java.sun.com/xml/ns/javaee/web-app_3_1.xsd">
	<!-- 2.5에서 3.1로 수정 -->
	<!-- The definition of the Root Spring Container shared by all Servlets and Filters -->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>/WEB-INF/spring/root-context.xml</param-value>
	</context-param>
	
	<!-- Creates the Spring Container shared by all Servlets and Filters -->
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>

	<!-- Processes application requests -->
	<servlet>
		<servlet-name>appServlet</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>/WEB-INF/spring/appServlet/servlet-context.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>
		
	<servlet-mapping>
		<servlet-name>appServlet</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>
	
	<!-- spring character encoding filter -->
	<filter>
           <filter-name>encoding</filter-name>
          <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
           <init-param>
                <param-name>encoding</param-name>
                <param-value>UTF-8</param-value>
           </init-param>
     </filter>
    
     <filter-mapping>
           <filter-name>encoding</filter-name>
           <url-pattern>/*</url-pattern>
     </filter-mapping>


</web-app>

3. 서버에서 잘 돌아가나 확인한다.

4. 서비스 >SampleService.java (인터페이스)

package com.lje.aopexam.service;

public interface SampleService {
	public Integer doAdd(String str1, String str2) throws Exception;
}

5. SampleServiceImpl.java

package com.lje.aopexam.service;

import org.springframework.stereotype.Service;

@Service
public class SampleServiceImpl implements SampleService {

	@Override
	public Integer doAdd(String str1, String str2) throws Exception {
		// TODO Auto-generated method stub
		return null;
	}

}

6. aop > LogAdvice.java (어드바이스 구현)

package com.lje.aopexam.aop;

import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.stereotype.Component;

import lombok.extern.java.Log;

@Aspect
@Log
@Component
public class LogAdvice {  //어드바이스 객체
	/* 포인트컷 지정. 서비스 패키지로 시작하는 클래스의 모든 메소드..모든 접근제어자 다 됨 */
	/* * : 0번이상 반복 */
	@Before( "execution(* com.lje.aopexam.service.SampleServie*.*(..))") 
	public void logBefore() {
		 log.info("=========================");
		 
	 }
	@After( "execution(* com.lje.aopexam.service.SampleServie*.*(..))") 
	public void logAfter() {
		 log.info("+++++++++++++++++++++++++");
	}
}

7. root-context.xml

<?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:aop="http://www.springframework.org/schema/aop"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd">
	
	<!-- Root Context: defines shared resources visible to all other web components -->
	<context:annotation-config></context:annotation-config>
	<context:component-scan base-package = "com.lje.aopexam.service" />
	<context:component-scan base-package = "com.lje.aopexam.aop" />
	<aop:aspectj-autoproxy></aop:aspectj-autoproxy>
</beans>

SampleServiceTest.java

package com.lje.aopexam;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import com.lje.aopexam.service.SampleService;

import lombok.Setter;
import lombok.extern.log4j.Log4j;

@RunWith(SpringJUnit4ClassRunner.class)
@Log4j
@ContextConfiguration("file:src/main/webapp/WEB-INF/spring/root-context.xml")
public class SampleServiceTest {
	@Setter(onMethod_=@Autowired)
	private SampleService service;
	
	@Test
	public void testClass() {
		log.info(service);
		log.info(service.getClass());
	}
}

>> 테스트 해보기

>> aop 적용 ( log.info("========================="); 나와야함)

package com.lje.aopexam;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import com.lje.aopexam.service.SampleService;

import lombok.Setter;
import lombok.extern.log4j.Log4j;

@RunWith(SpringJUnit4ClassRunner.class)
@Log4j
@ContextConfiguration("file:src/main/webapp/WEB-INF/spring/root-context.xml")
public class SampleServiceTest {
	@Setter(onMethod_=@Autowired)
	private SampleService service;
	
	@Test
	public void testClass() {
		log.info(service);
		log.info(service.getClass());
	}
	
	@Test
	public void testAdd() throws Exception{
		log.info(service.doAdd("123", "456"));
	}
}

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AOP와 트랜잭션 처리 - 1. Spring AOP와 트랜잭션 관리

1. Spring AOP와 트랜잭션 관리

Proxy객체

실습하기

6. aop > LogAdvice.java (어드바이스 구현)

7. root-context.xml

SampleServiceTest.java

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