[Spring] Spring Advice๋กœ ์ปค์Šคํ…€ ์–ด๋“œ๋ฐ”์ด์Šค ๋งŒ๋“ค๊ธฐ

์ด๋ฒˆ ํฌ์ŠคํŠธ๋ถ€ํ„ฐ๋Š” Spring AOP ์ปดํฌ๋„ŒํŠธ๋ฅผ ์ด์šฉํ•˜์—ฌ ์‹ค์ œ Advice๋ฅผ ๋งŒ๋“ค์–ด๋ณด๊ณ , ์œ„๋น™ํ•˜๋Š” ์‹œ๊ฐ„์„ ๊ฐ€์ ธ๋ณด๊ฒ ์Šต๋‹ˆ๋‹ค. Advice Interface Advice์— ๋Œ€ํ•ด ๋‹ค์‹œ ๋ณต์Šตํ•ด๋ณด์ž๋ฉด Advice๋Š” ํŠน์ • ์กฐ์ธํฌ์ธํŠธ ์ฆ‰, ๋ฉ”์„œ๋“œ๊ฐ€ ํ˜ธ์ถœ๋˜๋Š” ์‹œ์ ์— ์‹คํ–‰ํ•  ์ฝ”๋“œ๋ฅผ ์ •์˜ํ•œ ๊ฒƒ์ž…๋‹ˆ๋‹ค. ProxyFactory ํด๋ž˜์Šค์—์„œ addAdvice ๋ฉ”์„œ๋“œ๋ฅผ ์ด์šฉํ•ด ์–ด๋“œ๋ฐ”์ด์Šค๋ฅผ ์ง์ ‘ ์ถ”๊ฐ€ํ•˜๋Š” ๋ฐฉ๋ฒ•๊ณผ Advisor ๊ตฌํ˜„์ฒด๋ฅผ addAdvice์— ์ „๋‹ฌํ•˜์—ฌ ๊ฐ„์ ‘์ ์œผ๋กœ ์ถ”๊ฐ€ํ•˜๋Š” ๋ฐฉ๋ฒ•์ด ์žˆ์—ˆ์ฃ . ๋‘ ๋ฐฉ๋ฒ•์— ์ฐจ์ด๊ฐ€ ์žˆ๋‹ค๋ฉด ์–ด๋“œ๋ฐ”์ด์Šค์™€ ๋‹ฌ๋ฆฌ Advisor๋Š” ๊ด€๋ จ PointCut๊ณผ ํ•จ๊ป˜ ์–ด๋“œ๋ฐ”์ด์Šค๋ฅผ ์ „๋‹ฌํ•œ๋‹ค๋Š” ์ ์ด ์žˆ์Šต๋‹ˆ๋‹ค. PointCut์€ ์‹ค์ œ ์–ด๋“œ๋ฐ”์ด์Šค๋ฅผ ์–ธ์ œ ์‹คํ–‰ํ• ์ง€๋ฅผ ์ •ํ•˜๋Š” AOP ์šฉ์–ด๋กœ ์–ด๋“œ๋ฐ”์ด์Šค๋ฅผ ์‹คํ–‰ํ•  ์ง€์ ์„ ์ƒ์„ธํ•˜๊ฒŒ ์ง€์ •..