STS 개발

• SpringToolSuite4.ini
  • heap dump 옵션 : -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=$CATALINA_HOME/gclogs/
  • 메모리 옵션 : -Xms256m -Xmx1024m
  • 롬복 옵션 : -javaagent:/.../lombok.jar
  • ...
• "Folder" Vs "Source Folder"
  • A source folder is marked by Eclipse as containing java sources. Then, when you compile your project Eclipse will look for your source code into all your source folders.
  • You can make any folder become a source folder adding it to the java build path. Thus, next time you compile your project Eclipse will also look for java classes in that folder.
  • "New folder" creates a new folder inside a project.
  • "New source folder" creates a new folder inside a project, and adds this folder to the set of source folders of the project. Eclipse will compile the files in this folder.
  • "New package" creates a new Java package inside a source folder. It also creates the folder associated with the package, of course.
  • (IDE에서 특별한 표식이 있는) Source Folder는 말 그대로... Compiler가 Compile할 SourceCode를 찾을 Folder 임.
  • (우클릭 등으로...) Folder를 만들 수 있고, 또한 Source Folder 대상으로 추가 할 수도 있는 것.
• 메모
  
  •  New -> Maven Project -> (maven-archetype-quickstart)
    • 예) com.compony.project , api
    • 예) com.compony.project , batch.polling
    • 예) com.compony.project , batch.consuming
  • "Window.Preferences.Java.InstalledJREs" -> JDK확인
  • "STS Run Configuration" -> "Program arguments" -> (System Level에서 인식이 안되는 이슈 있었음)
  • "STS Run Configuration" -> "Java VM arguments" -> (-Dspring.profiles.active=local -Dproject.test=테 ... )
  • crontab
    • 예) 05 09 * * 0-6 /app/project/test.sh > /app/project/test.out 2>&1
    • 예) test.sh
      • #!/bin/bash
      • echo "[`date +%Y-%m-%d_%H:%M:%S`] test"
      • source /etc/profile
      • java -Dspring.profiles.active=dev -jar /app/project/test.jar
      • exit 0
  • ...
• 어노테이션
  • @Import
    • 상속보다는 좀 더 유연하고 확장성이 좋음.
    • 특정 Class의 기능을 손쉽게 받을 수 있음.
    • 예) @Import({AAA.class, BBB.class, CCC.class})
  • @Bean(name="이름", initMethod="함수", destroyMethod="함수")
    
    • (직접 내부를 다룰수 없는) "외부 라이브러리 Class"는 @Bean으로 명시하여 사용을 하면 된다.
    • 즉, "해당 외부 라이브러리 Class"를 return 하는 식으로~ Bean 정의를 하게 되는것.
    • 해당 Bean의 생성 및 소멸 시, 특정 함수를 실행 할 수 도 있다.
  • @Component
    • 반면, "직접 개발하는 Class"는 @Component라 명시하여~ Bean 정의를 하는것 이다.
    • (@Controller <- @Service <- @Repository ... )
  • @Resource
    • 표준 자바 어노테이션.
    • name 어트리뷰트가 있음.
  • @Autowired 
    • Spring Framework 어노테이션.
    • ApplicationContext 상에서, 정의된 Bean을 찾아~ Dependancy을 만족시키는 수단.
  • @Qualifier
    • 같은 Class으로 복수게의 Bean이 정의된 경우,
    • 특정한 Bean을 명시.
  • @Primary
    
    • 같은 Class으로 복수게의 Bean이 정의될 경우,
    • 그중에서 최우선 Bean을 정의.
  • @Transactional
    • Class에 걸면, 해당 모든 Method에 Transaction 걸림.
    • Method에 걸면, ...
    • // TODO : 음... 더더더
  • AOP(@Aspect, @Before, @Around, @After, ...)
    

    • @Aspect
      public class Performance {
      	@Around("execution(* com.blogcode.board.BoardService.getBoards(..))")
      	public Object calculatePerformanceTime(ProceedingJoinPoint proceedingJoinPoint) {
          	Object result = null;
      		try {
      			long start = System.currentTimeMillis();
      			result = proceedingJoinPoint.proceed();
      			long end = System.currentTimeMillis();
      		} catch (Throwable throwable) {
      			System.out.println("exception");
      		}
      		return result;
      	}
      }

  • ...
• 예제
  • "Spring에서 리소스 다루기"

    • @Autowired
      private ApplicationContext ctx;
      
      Resource resource = ctx.getResource("/resources/html/test.html");
      Resource resource = ctx.getResource("classpath:mapper/test/test.xml");

  • "logback-prod.xml 설정"

    • <?xml version="1.0" encoding="UTF-8"?>
      <configuration>
      	<!-- include resource="org/springframework/boot/logging/logback/base.xml"/-->
      
      	<appender name="ROLLING" class="ch.qos.logback.core.rolling.RollingFileAppender">
      		<file>/test/test.log</file>
      		<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
      			<fileNamePattern>/test/test.%d{yyyy-MM-dd}.log</fileNamePattern>
      			<maxHistory>7</maxHistory>
      		</rollingPolicy>
      		<encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
      			<charset>UTF-8</charset>
      			<pattern>%d{yyyy-MM-dd_HH:mm:ss.SSS} %level [%thread] [%logger{35}:%line] [%X{clientIp}] [%X{mdcKey}] ::: %msg%n</pattern>
      		</encoder>
      	</appender>
      	
      	<appender name="ROLLING_SCH" class="ch.qos.logback.core.rolling.RollingFileAppender">
      		<file>/test/test-sch.log</file>
      		<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
      			<fileNamePattern>/test/test-sch.%d{yyyy-MM-dd}.log</fileNamePattern>
      			<maxHistory>7</maxHistory>
      		</rollingPolicy>
      		<encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
      			<charset>UTF-8</charset>
      			<pattern>%d{yyyy-MM-dd_HH:mm:ss.SSS} %level [%thread] [%logger{35}:%line] [%X{clientIp}] [%X{mdcKey}] ::: %msg%n</pattern>
      		</encoder>
      	</appender>
      	
      	<root level="INFO">
      		<appender-ref ref="ROLLING" />
      	</root>
      	
      	<logger name="org.springframework" level="ERROR"/>
      	<logger name="com.company" level="INFO"/>
      	
      	<!-- logger name="com.company.project.test.XXX" level="INFO" additivity="false">
      		<appender-ref ref="ROLLING_SCH"/>
      	</logger -->
      </configuration>

  • "logback-local.xml 설정"

    • <?xml version="1.0" encoding="UTF-8"?>
      <configuration>
      	<!-- include resource="org/springframework/boot/logging/logback/base.xml"/-->
      	
      	<appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
      		<encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
      			<charset>UTF-8</charset>
                  <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %level [%thread] [%logger{35}:%line] [%X{clientIp}] [%X{mdcKey}] ::: %msg%n</pattern>
      		</encoder>
      	</appender>
      	
      	<!-- timestamp key="thetime" datePattern="yyMMddHH"/>
      	<appender name="FILE" class="ch.qos.logback.core.FileAppender">
      		<file>C:\\Users\\Administrator\\Desktop\\file-${thetime}.txt</file>
      		<append>true</append>
        		<encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
      			<charset>UTF-8</charset>
                  <pattern>%msg%n</pattern>
      		</encoder>
      	</appender -->
      	
      	<appender name="SIFT" class="ch.qos.logback.classic.sift.SiftingAppender">
      		<timeout>90 minutes</timeout>
              <maxAppenderCount>2</maxAppenderCount>
      		<discriminator>
      			<key>hourlytime</key>
      			<defaultValue>NA</defaultValue>
      		</discriminator>
          	<sift>
      			<appender name="SIFT-${hourlytime}" class="ch.qos.logback.core.FileAppender">
              		<file>C:\\Users\\Administrator\\Desktop\\sift-${hourlytime}.txt</file>
      				<append>false</append>
      				<layout class="ch.qos.logback.classic.PatternLayout">
      					<charset>UTF-8</charset>
      					<pattern>%msg%n</pattern>
      				</layout>
      			</appender>
      		</sift>
      	</appender>
      	
      	<root level="INFO">
      		<appender-ref ref="CONSOLE" />
      	</root>
      	
      	<logger name="org.springframework" level="INFO"/>
      	<logger name="com.company" level="INFO"/>
      	
      	<!-- logger name="com.company.project.test.XXX" level="INFO" additivity="false">
      		<appender-ref ref="SIFT"/>
      	</logger -->
      </configuration>

  • ...
• ...

-끝-