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TIL
  • README
  • Git
    • Basic
    • Remote Repository
    • Log & Diff
    • Rebase&Cherri-Pick
    • git-flow
  • DevOps
    • Monolithic vs MSA
    • Jenkins ์‹œ์ž‘ํ•˜๊ธฐ
    • Airflow ์‹œ์ž‘ํ•˜๊ธฐ
    • Airflow ์‹œ์ž‘ํ•˜๊ธฐ
    • Build Tools
      • maven
  • ๊ฐœ๋ฐœ ๋ฐฉ๋ฒ•๋ก 
    • TDD
  • Spring
    • IoC
    • Is Spring Bean Thread-Safe?
    • Spring Singleton
    • Component Scan
    • Spring Annotation
    • ์˜์กด ๊ด€๊ณ„ ์ฃผ์ž…(DI)
    • Lombok ํ™œ์šฉํ•˜๊ธฐ
    • Bean ์ƒ๋ช…์ฃผ๊ธฐ์™€ ์ฝœ๋ฐฑ
    • Bean Scope
    • AOP(1) - AOP๋ž€
    • AOP(2) - Aop Proxy
    • AOP(3) - Dynamic Proxy
    • AOP(4) - AspectJ
    • POJO
    • Spring ์„œ๋น„์Šค ๊ตฌ์กฐ
    • Transaction
    • JPA๋ž€?
    • JPA Entity
    • Spring Data JPA
    • Spring Data Specification
    • Model Mapping
    • Cache
    • restTemplate
    • YAML ํŒŒ์ผ ์„ค์ •
    • Spring Boot
      • H2 DB ์„ค์ •
      • ๋‹ค์ค‘ ๋ฐ์ดํ„ฐ๋ฒ ์ด์Šค ์„ค์ •
      • Mybatis ์—ฐ๋™ํ•˜๊ธฐ
    • Spring Batch
      • Batch ์‹œ์ž‘ํ•ด๋ณด๊ธฐ
      • Batch Job Flow
      • Job
      • Step
      • Batch Scope & Job Parameter
      • JobRepository์™€ ๋ฉ”ํƒ€ํ…Œ์ด๋ธ”
      • Chunk ์ง€ํ–ฅ ํ”„๋กœ๊ทธ๋ž˜๋ฐ
      • ItemReader
      • ItemProcessor
      • ItemWriter
      • Batch Schedular
      • Job๋ณ„ Bean๋“ฑ๋กํ•˜๊ธฐ
      • Batch ๊ตฌํ˜„์‹œ ๋ฐœ์ƒํ•œ ์˜ค๋ฅ˜ ์ •๋ฆฌ
      • Spring Batch Scaling
        • Multithread Job๊ตฌํ˜„์‹œ ์ด์Šˆ์‚ฌํ•ญ
    • Spring test
      • Junit5
        • ํ…Œ์ŠคํŠธ ์ด๋ฆ„ ํ‘œ๊ธฐ
        • ํ…Œ์ŠคํŠธ ๊ทธ๋ฃน ์‚ฌ์ด์˜ ๊ด€๊ณ„
        • ํƒœ๊ทธ์™€ ํ•„ํ„ฐ๋ง
        • ๋™์  ํ…Œ์ŠคํŠธ
        • ํ…Œ์ŠคํŠธ LifeCycle
        • ํ…Œ์ŠคํŠธ ๋ฉ”์„œ๋“œ
        • ํ…Œ์ŠคํŠธ ์ˆœ์„œ
        • AssertJ
        • ํ…Œ์ŠคํŠธ ๋ณ‘๋ ฌ ์‹คํ–‰
        • AssertJ
        • Mock
      • Spring Boot Test DB ๋ถ„๋ฆฌ
      • Spring Batch Test
  • Web Application
    • Web Server & WAS
    • ๊ด€๋ จ ๊ฐœ๋… - HTTP API, HTML, CSR, SSR
    • Servlet
    • JSP
    • Cookie And Session
    • ์˜ˆ์™ธํŽ˜์ด์ง€
    • Java Bean
    • JDBC
    • Connection Pool
    • ํŒŒ์ผ ์—…๋กœ๋“œ
    • Expression Language
    • JSTL
    • FrontControllerํŒจํ„ด Command ํŒจํ„ด
    • Forwarding
    • MVC
    • ํšŒ์›๊ฐ€์ž…์˜ˆ์ œ
    • ์ฐธ๊ณ 
      • ๊ฐœ๋ฐœํ™˜๊ฒฝ์„ค์ •
  • Java+
    • SOAP/WSDL vs REST
    • WSDL์„ JAVA๋กœ ๋ณ€ํ™˜ํ•˜๊ธฐ
    • SOAP ํ†ต์‹  OPEN API๋กœ ๊ฐœ๋ฐœํ•ด๋ณด๊ธฐ
  • Java
    • Basic
      • ๋ณ€์ˆ˜์™€ ํƒ€์ž…
      • ์—ฐ์‚ฐ์ž
      • ์กฐ๊ฑด๋ฌธ๊ณผ ๋ฐ˜๋ณต๋ฌธ
      • ์ฐธ์กฐ ํƒ€์ž…
      • ํด๋ž˜์Šค
      • ์ƒ์†(Inheritance)
      • ์ธํ„ฐํŽ˜์ด์Šค(Interface)
      • ์ค‘์ฒฉ ํด๋ž˜์Šค์™€ ์ค‘์ฒฉ ์ธํ„ฐํŽ˜์ด์Šค
      • ์˜ˆ์™ธ ์ฒ˜๋ฆฌ
      • API - Object, System, Class, Math, Wrapper
      • API - String, StringBuffer, StringBuilder
      • Thread
      • Generic
      • Lambda
      • Collection - List, Set
      • Collection - Map
      • Collection - Tree
      • Collection - Stack, Queue
      • Stream
      • Reflection
      • ์ •๊ทœํ‘œํ˜„์‹
      • GUI
      • UML
      • Serializable
    • Advanced
      • OutOfMemoryError
      • AutoValue
      • meta-annotation
        • @Retention
        • @Target
        • @Repeatable
    • Effective Java 3/E
      • ITEM 1: Static Factory Method(์ •์  ๋ฉ”์†Œ๋“œ)
      • ITEM 2: Builder Pattern
      • ITEM 3: Singleton
      • ITEM 4: Private Constructor
      • ITEM 5: Dependency Injection
      • ITEM 6: Avoid Unnecessary Object
      • ITEM 7: Eliminate Object Reference
      • ITEM 8: Avoid finalizer and cleaner
      • ITEM 9: try-with-resources
      • ITEM 10: The gerneral contract when overriding equlas
      • ITEM 11: Overriding hashCode
      • ITEM 12: overriding toString
      • ITEM 13: overriding clone judiciously
      • ITEM 14: Consider implementing comparable
      • ITEM 15: ํด๋ž˜์Šค์™€ ๋ฉค๋ฒ„์˜ ์ ‘๊ทผ์„ ์ตœ์†Œํ™”ํ•ด๋ผ
      • ITEM 16: Use Accessor methods
      • ITEM 17: ๋ณ€๊ฒฝ ๊ฐ€๋Šฅ์„ฑ์„ ์ตœ์†Œํ™”ํ•ด๋ผ(๋ถˆ๋ณ€ ํด๋ž˜์Šค)
      • ITEM 18: ์ƒ์†๋ณด๋‹จ ์ปดํฌ์ง€์…˜์„ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 19: ์ƒ์†์„ ๊ณ ๋ คํ•ด ์„ค๊ณ„ํ•˜๊ณ  ๋ฌธ์„œํ™”ํ•ด๋ผ
      • ITEM 20: ์ถ”์ƒ ํด๋ž˜์Šค๋ณด๋‹ค ์ธํ„ฐํŽ˜์ด์Šค๋ฅผ ์šฐ์„ ํ•˜๋ผ
      • ITEM 21: ์ธํ„ฐํŽ˜์ด์Šค๋Š” ๊ตฌํ˜„ํ•˜๋Š” ์ชฝ์„ ์ƒ๊ฐํ•ด ์„ค๊ณ„ํ•ด๋ผ.
      • ITEM 22: ์ธํ„ฐํŽ˜์ด์Šค๋Š” ํƒ€์ž…์„ ์ •์˜ํ•˜๋Š” ์šฉ๋„๋กœ๋งŒ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 23: ํƒœ๊ทธ ๋‹ฌ๋ฆฐ ํด๋ž˜์Šค๋ณด๋‹ค ํด๋ž˜์Šค ๊ณ„์ธต๊ตฌ์กฐ๋ฅผ ํ™œ์šฉํ•ด๋ผ
      • ITEM 24: ๋ฉค๋ฒ„ ํด๋ž˜์Šค๋Š” ๋˜๋„๋ก static์œผ๋กœ ๊ตฌํ˜„ํ•ด๋ผ
      • ITEM 25: ํ†ฑ๋ ˆ๋ฒจ ํด๋ž˜์Šค๋Š” ํ•œ ํŒŒ์ผ์— ํ•˜๋‚˜๋งŒ ์ƒ์„ฑํ•ด๋ผ.
      • ITEM 26: Raw type์€ ์‚ฌ์šฉํ•˜์ง€ ๋งˆ๋ผ
      • ITEM 27: ๋น„๊ฒ€์‚ฌ ๊ฒฝ๊ณ ๋ฅผ ์ œ๊ฑฐํ•ด๋ผ
      • ITEM 28: ๋ฐฐ์—ด๋ณด๋‹ค๋Š” ๋ฆฌ์ŠคํŠธ๋ฅผ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 29: ์ด์™•์ด๋ฉด ์ œ๋„ค๋ฆญ ํƒ€์ž…์œผ๋กœ ๋งŒ๋“ค์–ด๋ผ
      • ITEM 30: ์ด์™•์ด๋ฉด ์ œ๋„ค๋ฆญ ๋ฉ”์„œ๋“œ๋กœ ๋งŒ๋“ค์–ด๋ผ
      • ITEM 31 : ํ•œ์ •์  ์™€์ผ๋“œ์นด๋“œ๋ฅผ ์‚ฌ์šฉํ•ด API ์œ ์—ฐ์„ฑ์„ ๋†’์—ฌ๋ผ
      • ITEM 32: ์ œ๋„ค๋ฆญ๊ณผ ๊ฐ€๋ณ€์ธ์ˆ˜๋ฅผ ํ•จ๊ป˜ ์“ธ ๋•Œ๋Š” ์‹ ์ค‘ํ•ด๋ผ
      • ITEM 33: ํƒ€์ž… ์•ˆ์ „ ์ด์ข… ์ปจํ…Œ์ด๋„ˆ๋ฅผ ๊ณ ๋ คํ•ด๋ผ
      • ITEM 34: int ์ƒ์ˆ˜ ๋Œ€์‹  ์—ด๊ฑฐ ํƒ€์ž…์„ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 35: ordinal ๋ฉ”์„œ๋“œ ๋Œ€์‹  ์ธ์Šคํ„ด์Šค ํ•„๋“œ๋ฅผ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 36: ๋น„ํŠธ ํ•„๋“œ ๋Œ€์‹  EnumSet์„ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 37: ordinal ์ธ๋ฑ์‹ฑ ๋Œ€์‹  EnumMap์„ ์‚ฌ์šฉํ•ด๋ผ
      • TEM 38 : ํ™•์žฅํ•  ์ˆ˜ ์žˆ๋Š” ์—ด๊ฑฐํƒ€์ž…์ด ํ•„์š”ํ•˜๋ฉด ์ธํ„ฐํŽ˜์ด์Šค๋ฅผ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 39: ๋ช…๋ช… ํŒจํ„ด๋ณด๋‹ค ์• ๋„ˆํ…Œ์ด์…˜์„ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 40: @Override ์–ด๋…ธํ…Œ์ด์…˜์„ ์ผ๊ด€๋˜๊ฒŒ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 41: ์ •์˜ํ•˜๋ ค๋Š” ๊ฒƒ์ด ํƒ€์ž…์ด๋ผ๋ฉด ๋งˆ์ปค ์ธํ„ฐํŽ˜์ด์Šค๋ฅผ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 42: ์ต๋ช… ํด๋ž˜์Šค๋ณด๋‹ค๋Š” ๋žŒ๋‹ค๋ฅผ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 43: ๋žŒ๋‹ค๋ณด๋‹ค๋Š” ๋ฉ”์„œ๋“œ ์ฐธ์กฐ๋ฅผ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 44: ํ‘œ์ค€ ํ•จ์ˆ˜ํ˜• ์ธํ„ฐํŽ˜์ด์Šค๋ฅผ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 45: ์ŠคํŠธ๋ฆผ์€ ์ฃผ์˜ํ•ด์„œ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 46: ์ŠคํŠธ๋ฆผ์—์„œ ๋ถ€์ž‘์šฉ ์—†๋Š” ํ•จ์ˆ˜๋ฅผ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 47: ๋ฐ˜ํ™˜ ํƒ€์ž…์œผ๋กœ๋Š” ์ŠคํŠธ๋ฆผ๋ณด๋‹ค ์ปฌ๋ ‰์…˜์ด ๋‚ซ๋‹ค.
      • ITEM 48: ์ŠคํŠธ๋ฆผ ๋ณ‘๋ ฌํ™”๋Š” ์ฃผ์˜ํ•ด์„œ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 49: ๋งค๊ฐœ๋ณ€์ˆ˜๊ฐ€ ์œ ํšจํ•œ์ง€ ๊ฒ€์‚ฌํ•ด๋ผ
      • ITEM 50: ์ ์‹œ์— ๋ฐฉ์–ด์  ๋ณต์‚ฌ๋ณธ์„ ๋งŒ๋“ค์–ด๋ผ
      • ITEM 51: ๋ฉ”์„œ๋“œ ์‹œ๊ทธ๋‹ˆ์ฒ˜๋ฅผ ์‹ ์ค‘ํžˆ ์„ค๊ณ„ํ•ด๋ผ
      • ITEM 52: ๋‹ค์ค‘์ •์˜๋Š” ์‹ ์ค‘ํžˆ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 53: ๊ฐ€๋ณ€์ธ์ˆ˜๋Š” ์‹ ์ค‘ํžˆ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 54: null์ด ์•„๋‹Œ, ๋นˆ ์ปฌ๋ ‰์…˜์ด๋‚˜ ๋ฐฐ์—ด์„ ๋ฐ˜ํ™˜ํ•ด๋ผ
      • ITEM 55: Optional ๋ฐ˜ํ™˜์€ ์‹ ์ค‘ํ•˜๊ฒŒ ํ•ด๋ผ
      • ITEM 56: ๊ณต๊ฐœ๋œ API ์š”์†Œ์—๋Š” ํ•ญ์ƒ ์ฃผ์„์„ ์ž‘์„ฑํ•ด๋ผ
      • ITEM 57: ์ง€์—ญ๋ณ€์ˆ˜์˜ ๋ฒ”์œ„๋ฅผ ์ตœ์†Œํ™”ํ•ด๋ผ
      • ITEM 58: ์ „ํ†ต์ ์ธ for ๋ฌธ๋ณด๋‹ค๋Š” for-each๋ฌธ์„ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 59: ๋ผ์ด๋ธŒ๋Ÿฌ๋ฆฌ๋ฅผ ์ตํžˆ๊ณ  ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 60: ์ •ํ™•ํ•œ ๋‹ต์ด ํ•„์š”ํ•˜๋‹ค๋ฉด float์™€ double์€ ํ”ผํ•ด๋ผ
      • ITEM 61: ๋ฐ•์‹ฑ๋œ ๊ธฐ๋ณธ ํƒ€์ž…๋ณด๋‹ค๋Š” ๊ธฐ๋ณธ ํƒ€์ž…์„ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 62: ๋‹ค๋ฅธ ํƒ€์ž…์ด ์ ์ ˆํ•˜๋‹ค๋ฉด ๋ฌธ์ž์—ด ์‚ฌ์šฉ์„ ํ”ผํ•ด๋ผ
      • ITEM 63: ๋ฌธ์ž์—ด ์—ฐ๊ฒฐ์€ ๋А๋ฆฌ๋‹ˆ ์ฃผ์˜ํ•ด๋ผ
      • ITEM 64: ๊ฐ์ฒด๋Š” ์ธํ„ฐํŽ˜์ด์Šค๋ฅผ ์‚ฌ์šฉํ•ด ์ฐธ์กฐํ•ด๋ผ
      • ITEM 65: ๋ฆฌํ”Œ๋ ‰์…˜๋ณด๋‹ค๋Š” ์ธํ„ฐํŽ˜์ด์Šค๋ฅผ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 66: ๋„ค์ดํ‹ฐ๋ธŒ ๋ฉ”์„œ๋“œ๋Š” ์‹ ์ค‘ํžˆ ์‚ฌ์šฉํ•ด๋ผ
      • ITEM 67: ์ตœ์ ํ™”๋Š” ์‹ ์ค‘ํžˆ ํ•ด๋ผ
      • ITEM 68: ์ผ๋ฐ˜์ ์œผ๋กœ ํ†ต์šฉ๋˜๋Š” ๋ช…๋ช… ๊ทœ์น™์„ ๋”ฐ๋ผ๋ผ
    • ๊ฐ์ฒด์ง€ํ–ฅ ์„ค๊ณ„ ์›์น™(SOLID)
    • ๋””์ž์ธํŒจํ„ด
      • Strategy Pattern
      • Template Method Pattern
      • Factory Method Pattern
      • Singleton
      • Delegation
      • Proxy
      • Adapter Pattern
    • ์‹ค์Šต
      • ์ธํ„ฐํŽ˜์ด์Šค ์‹ค์Šต - Vehicle
      • ์ธํ„ฐํŽ˜์ด์Šค ์‹ค์Šต - Remote
      • GUI ์‹ค์Šต - Calculator
      • GUI ์‹ค์Šต - button
      • GUI ์‹ค์Šต - lotto
      • Thread ์‹ค์Šต - ์ขŒ์„์˜ˆ์•ฝ, ๋ฉ”์„ธ์ง€๋ณด๋‚ด๊ธฐ
    • Jar vs War
  • ๋ฐ์ดํ„ฐ๋ฒ ์ด์Šค
    • KEY
    • Index
    • Transaction
    • Trigger
    • Procedure / Function
    • Package
    • ๋ฐ์ดํ„ฐ๋ฒ ์ด์Šค ๋ฐฐ์›€ํ„ฐ
      • ๋ฐ์ดํ„ฐ๋ฒ ์ด์Šค ์‹œ์Šคํ…œ
      • ๊ด€๊ณ„๋ฐ์ดํ„ฐ ๋ชจ๋ธ
      • ๊ด€๊ณ„๋Œ€์ˆ˜์™€ SQL
    • MySQL
      • Database๋ž€
      • MySQL ์‹œ์ž‘ํ•˜๊ธฐ
      • MySQL Database
      • MySQL Table
      • CRUD
      • ๊ด€๊ณ„ํ˜• ๋ฐ์ดํ„ฐ๋ฒ ์ด์Šค
      • Server์™€ Client
    • PostgreSQL
    • NoSQL
      • Install Cassandra on mac
      • Cassandra๋ž€?
      • NiFi๋ž€
  • Algorithm
    • String
    • Recursion
    • Dynamic Programming
    • Array, Struct, Pointer
    • Math
    • Sort
    • List
    • Stack
    • Queue
    • Graph
    • Tree
    • Maze
    • AVL
    • ์ด์ง„ํƒ์ƒ‰ํŠธ๋ฆฌ(Binary Search Tree)
    • DFS์™€ BFS
    • ๋‹ค์ต์ŠคํŠธ๋ผ ์•Œ๊ณ ๋ฆฌ์ฆ˜(Dijkstra's Algorithm)
    • Red-Black ํŠธ๋ฆฌ
    • A* ์•Œ๊ณ ๋ฆฌ์ฆ˜
    • Heap
    • Huffman Coding
    • Priority Queue
    • Bellman-Ford ์•Œ๊ณ ๋ฆฌ์ฆ˜
    • C++
      • Class
      • STL
        • STL pair
        • STL Container - Associate Container
        • STL Container - Sequence Container
        • STL Container - Container Adapter
  • JavaScript
    • JABASCRIPT BASIC
    • Shallow Copy vs Deep Copy
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  1. Spring

AOP(4) - AspectJ

AspectJ๋ž€ ์ˆœ์ˆ˜ Spring AOP API์—์„œ ์ œ๊ณตํ•˜์ง€ ์•Š์€ ํ•„๋“œ์— ๋Œ€ํ•œ Advisor๋ฅผ ์ง€์›ํ•˜๊ณ , CTW(Compile Time Weaving), LTW(Load Time Weaving)๊ณผ ๊ฐ™์€ ๋‹ค์–‘ํ•œ ์œ„๋น™ ๋ฐฉ๋ฒ•์„ ์ œ๊ณตํ•ด ํ”„๋กœ๊ทธ๋žจ์˜ ํผํฌ๋จผ์Šค๋ฅผ ํ–ฅ์ƒ ์‹œํ‚ฌ ์ˆ˜ ์žˆ๋„๋ก ํ•ด์ค€๋‹ค.

๋˜ํ•œ @Aspect ์–ด๋…ธํ…Œ์ด์…˜์„ ๋ฐ”ํƒ•์œผ๋กœ ๋กœ์ง์„ ์ž‘์„ฑํ•  ์ˆ˜ ์žˆ์–ด, xml ๋ฐฉ์‹๋ณด๋‹ค๋Š” ๋” ํŽธ๋ฆฌํ•˜๋‹ค.

Weaving

Weaving์€ Aspect ํด๋ž˜์Šค์— ์ •์˜ ํ•œ Advice ๋กœ์ง์„ ํƒ€๊ฒŸ์— ์ ์šฉํ•˜๋Š” ๊ฒƒ์„ ์˜๋ฏธํ•˜๋ฉฐ, RTW, CTW, LTW 3๊ฐ€์ง€๊ฐ€ ์žˆ๋‹ค.

RTW(Run Time Weaving)

Spring AOP์—์„œ ์‚ฌ์šฉํ•˜๋Š” ๋ฐฉ์‹์œผ๋กœ, Proxy๋ฅผ ์ƒ์„ฑํ•ด ์‹ค์ œ ํƒ€๊นƒ ์˜ค๋ธŒ์ ํŠธ์˜ ๋ณ€ํ˜•์—†์ด ์œ„๋น™์„ ์ˆ˜ํ–‰ํ•œ๋‹ค. ์‹ค์ œ ๋Ÿฐํƒ€์ž„์‹œ Method ํ˜ธ์ถœ ์‹œ์— ์œ„๋น™์ด ์ด๋ฃจ์–ด์ง€๋Š” ๋ฐฉ์‹์ด๋‹ค.

์†Œ์ŠคํŒŒ์ผ, ํด๋ž˜์Šค ํŒŒ์ผ์— ๋ณ€ํ˜•์ด ์—†๋‹ค๋Š” ์žฅ์ ์ด ์žˆ์ง€๋งŒ, Point Cut์— ๋Œ€ํ•œ Advice ์ˆ˜๊ฐ€ ๋Š˜์–ด๋‚ ์ˆ˜๋ก ์„ฑ๋Šฅ์ด ๋–จ์–ด์ง„๋‹ค๋Š” ๋‹จ์ ์ด ์žˆ๋‹ค.

CTW(Compile Time Weaving)

AspectJ์—๋Š” AJC (AspectJ Compiler)๋ผ๋Š” ์ปดํŒŒ์ผ๋Ÿฌ๊ฐ€ ์žˆ๋Š”๋ฐ Java Compiler๋ฅผ ํ™•์žฅํ•œ ํ˜•ํƒœ์˜ ์ปดํŒŒ์ผ๋Ÿฌ์ด๋‹ค. AJC๋ฅผ ํ†ตํ•ด javaํŒŒ์ผ์„ ์ปดํŒŒ์ผ ํ•˜๋ฉฐ, ์ปดํŒŒ์ผ ๊ณผ์ •์—์„œ ๋ฐ”์ดํŠธ ์ฝ”๋“œ ์กฐ์ž‘์„ ํ†ตํ•ด Advisor ์ฝ”๋“œ๋ฅผ ์ง์ ‘ ์‚ฝ์ž…ํ•˜์—ฌ ์œ„๋น™์„ ์ˆ˜ํ–‰ํ•œ๋‹ค. ์žฅ์ ์œผ๋กœ๋Š” 3๊ฐ€์ง€ ์œ„๋น™ ์ค‘์—์„œ๋Š” ๊ฐ€์žฅ ๋น ๋ฅธ ํผํฌ๋จผ์Šค๋ฅผ ๋ณด์—ฌ์ค€๋‹ค. ํ•˜์ง€๋งŒ ์ปดํŒŒ์ผ ๊ณผ์ •์—์„œ lombok๊ณผ ๊ฐ™์ด ์ปดํŒŒ์ผ ๊ณผ์ •์—์„œ ์ฝ”๋“œ๋ฅผ ์กฐ์ž‘ํ•˜๋Š” ํ”Œ๋Ÿฌ๊ทธ์ธ๊ณผ ์ถฉ๋Œ์ด ๋ฐœ์ƒํ•  ๊ฐ€๋Šฅ์„ฑ์ด ์•„์ฃผ ๋†’๋‹ค. (๊ฑฐ์˜ ๊ฐ™์ด ์‚ฌ์šฉ ๋ถˆ๊ฐ€)

LTW(Load Time Weaving)

ClassLoader๋ฅผ ์ด์šฉํ•ด ํด๋ž˜์Šค๊ฐ€ JVM์— ๋กœ๋“œ๋  ๋•Œ ๋ฐ”์ดํŠธ ์ฝ”๋“œ ์กฐ์ž‘์„ ํ†ตํ•ด ์œ„๋น™๋˜๋Š” ๋ฐฉ์‹์œผ๋กœ ์ปดํŒŒ์ผ ์‹œ๊ฐ„์€ ์ƒ๋Œ€์ ์œผ๋กœ CTW๋ณด๋‹ค ์งง๋‹ค. ํ•˜์ง€๋งŒ ์˜ค๋ธŒ์ ํŠธ๊ฐ€ ๋ฉ”๋ชจ๋ฆฌ์— ์˜ฌ๋ผ๊ฐ€๋Š” ๊ณผ์ •์—์„œ ์œ„๋น™์ด ์ผ์–ด๋‚˜๊ธฐ๋•Œ๋ฌธ์— ๋Ÿฐํƒ€์ž„์‹œ ์‹œ๊ฐ„์€ CTW๋ณด๋‹ค ์ƒ๋Œ€์ ์œผ๋กœ ๋А๋ฆฌ๋‹ค.

Application Context์— ๊ฐ์ฒด๊ฐ€ ๋กœ๋“œ๋  ๋•Œ, ๊ฐ์ฒด ํ•ธ๋“ค๋ง์ด ๋ฐœ์ƒํ•˜๋ฏ€๋กœ ํผํฌ๋จผ์Šค๊ฐ€ ์ €ํ•˜๋œ๋‹ค.

Annotatoin

์„ค๋ช…

@Before

๋ฉ”์†Œ๋“œ ์‹คํ–‰ ์ด์ „ ๋ถ€๋ถ„์— ๋Œ€ํ•œ JoinPoint ์„ค์ •

@Around

๋ฉ”์†Œ๋“œ ์‹คํ–‰ ์ „/ํ›„์— JoinPoint ์„ค์ •

@After

๋ฉ”์†Œ๋“œ ์‹คํ–‰ ์ดํ›„ ๋ถ‘ใ„ด์˜ ๋Œ€ํ•œ JoinPoint์„ค์ •

@AfterReturning

return ์‹คํ–‰ ์ดํ›„ ๋ถ€๋ถ„์— ๋Œ€ํ•œ JoinPoint ์„ค์ •

@AfterThrowable

๋ฉ”์†Œ๋“œ ์‹คํ–‰์‹œ, Throw ์ดํ›„ ๋ถ€๋ถ„์— ๋Œ€ํ•œ Joinpoint ์„ค์ •

@Pointcut

Pointcut์— ๋Œ€ํ•œ ํ‘œํ˜„์‹์„ ๊ฐ€์ง€๋ฉฐ, @Pointcut์ด ์ ์šฉ๋œ ๋ฉ”์†Œ๋“œ๋Š” ๋ฐ˜๋“œ์‹œ ๋ฆฌํ„ดํƒ€์ž…์ด void์—ฌ์•ผํ•œ๋‹ค.

  1. ์ ‘๊ทผ ์ œ์–ด์ž ํŒจํ„ด(public or protected)

    • *์ธ ๊ฒฝ์šฐ(or ์ƒ๋žต) ๋ชจ๋“  ์ ‘๊ทผ ์ œ์–ด์ž์— ๋Œ€ํ•ด ์„ค์ • ๊ฐ€๋Šฅ

  2. ๋ฆฌํ„ดํƒ€์ž… : ๋ฉ”์†Œ๋“œ์˜ ๋ฆฌํ„ดํƒ€์ž…์„ ์ง€์ •(ํ•ด๋‹น ํƒ€์ž…์œผ๋กœ ๋ฆฌํ„ด๋˜๋Š” ๋ชจ๋“  ๋ฉ”์†Œ๋“œ์— ๋Œ€ํ•œ point cut)

    • ํ•„์ˆ˜ ๊ธฐ์žฌ

  3. Class ํƒ€์ž… : ํด๋ž˜์Šค ํƒ€์ž… ํŒจํ„ด(ํ•ด๋‹น ํด๋ž˜์Šค์— ๋Œ€ํ•œ ๋ชจ๋“  ๋ฉ”์†Œ๋“œ์— ๋Œ€ํ•ด Point cut)

    • ํŒจํ‚ค์ง€ ๋ช…๋„ ๊ธฐ์žฌ ํ•„์š”

    • ํ•„์ˆ˜ ๊ธฐ์žฌ

  4. ๋ฉ”์†Œ๋“œ ๋ช… : ํŠน์ • ํด๋ž˜์Šค ๋˜๋Š” ํŒจํ‚ค์ง€ ํ•˜์œ„์˜ ๋ฉ”์†Œ๋“œ ๋ช…์— ๋Œ€ํ•ด Point Cut

    • ํ•„์ˆ˜ ๊ธฐ์žฌ

  5. ์˜ˆ์™ธํƒ€์ž… : ์˜ˆ์™ธ ํด๋ž˜์Šค์— ๋Œ€ํ•ด์„œ Jointpoint ์„ค์ • ๊ฐ€๋Šฅ

AOP ๊ตฌํ˜„

์Šคํ”„๋ง์€ 3๊ฐ€์ง€ ๋ฐฉ์‹์œผ๋กœ AOP๋ฅผ ์ œ๊ณตํ•œ๋‹ค.

  1. XML ์Šคํ‚ค๋งˆ ๊ธฐ๋ฐ˜์˜ POJOํด๋ž˜์Šค๋ฅผ ์ด์šฉํ•œ AOP ๊ตฌํ˜„

  2. AspectJ์—์„œ ์ •์˜ํ•œ @Aspect ์–ด๋…ธํ…Œ์ด์…˜ ๊ธฐ๋ฐ˜์˜ AOP ๊ตฌํ˜„

์ด์ค‘์—์„œ @Aspect ์–ด๋…ธํ…Œ์ด์…˜ ๊ธฐ๋ฐ˜์˜ AOP ๊ตฌํ˜„์„ ์˜ˆ๋กœ ๊ตฌํ˜„ํ•ด๋ณผ ๊ฒƒ์ด๋‹ค.

  1. maven(pom.xml) ์„ค์ •

<!-- aop aspectj -->
<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-aop</artifactId>
</dependency>
  1. @EnableAspectJAutoProxy ์ ์šฉ : ์ตœ์ƒ์œ„ ํŒจํ‚ค์ง€์˜ ํด๋ž˜์Šค์— ์ ์šฉํ•ด AOP๋ฅผ ์ฐพ์„ ์ˆ˜ ์žˆ๊ฒŒํ•ด์ค€๋‹ค.

package com.example.practiceAop;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.EnableAspectJAutoProxy;

@EnableAspectJAutoProxy
@SpringBootApplication
public class PracticeAopApplication {

    public static void main(String[] args) {
        SpringApplication.run(PracticeAopApplication.class, args);
    }
}
  1. ๊ณตํ†ต๊ธฐ๋Šฅ ์ •์˜ ๋ฐ ์‹œ์  ์ •์˜(๋กœ๊ทธ ์ ์šฉ)

package com.example.practiceAop;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;


/**
 * LoggerAspect
 *  
 * pointcut ๊ธฐ์ค€์œผ๋กœ Log ๊ธฐ๋ก
 * @Aspect : ๋ถ€๊ฐ€๊ธฐ๋Šฅ ๋ชจ๋“ˆ, ํ•ต์‹ฌ๊ธฐ๋Šฅ์— ๋ถ€๊ฐ€๋˜์–ด ์˜๋ฏธ๋ฅผ ๊ฐ–๋Š” ํŠน๋ณ„ํ•œ ๋ชจ๋“ˆ(Pointcut + Advice)
 * Advice : ์‹ค์ œ๋กœ ๋ถ€๊ฐ€๊ธฐ๋Šฅ์„ ๋‹ด์€ ๊ตฌํ˜„์ฒด
 * PointCut : ๋ณต์ˆ˜์˜ ์กฐ์ธ ํฌ์ธํŠธ๋ฅผ ํ•˜๋‚˜๋กœ ๋ฌถ์€ ๊ฒƒ
 * JoinPoint : Advice๊ฐ€ ์ ์šฉ๋  ์œ„์น˜
 */
@Aspect
@Component
public class LoggerAspect {

    private final Logger logger = LoggerFactory.getLogger(this.getClass());

    // AOP Point Cut
    // Controller, ServiceImpl, Repository ๊ธฐ์ค€์œผ๋กœ ๋กœ๊ทธ ์ถœ๋ ฅ
    @Around("execution(* com.example.practiceAop.controller.*Controller.*(..)) or execution(* com.example.practiceAop.service.impl.*Impl.*(..)) or execution(* com.example.practiceAop.repository.*Repository.*(..))")
    public Object printLog(ProceedingJoinPoint joinPoint) throws Throwable {

        String type = "";
        String name = joinPoint.getSignature().getDeclaringTypeName(); // ์‹คํ–‰๋˜๋Š” ๋Œ€์ƒ ๋ฉ”์„œ๋“œ ์ •๋ณด
        if (name.contains("Controller") == true) {
            type = "Controller ===> ";

        }else if (name.contains("Service") == true) {
            type = "ServiceImpl ===> ";
        }else if (name.contains("Repository") == true) {
            type = "Repository ===> ";
        }

        logger.info(type + name + "." + joinPoint.getSignature().getName() + "( )" );

        return joinPoint.proceed();
    }

}

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PreviousAOP(3) - Dynamic ProxyNextPOJO

Last updated 5 years ago

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์Šคํ”„๋ง API๋ฅผ ์ด์šฉํ•œ AOP ๊ตฌํ˜„
Carrey's ๊ธฐ์ˆ ๋ธ”๋กœ๊ทธ
https://jeong-pro.tistory.com/171
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