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DI1

[Spring Boot] ์˜์กด์„ฑ ์ฃผ์ž…ํ•  ๋•Œ ํ•„๋“œ์ฃผ์ž… vs ์ƒ์„ฑ์ž ์ฃผ์ž…? ์Šคํ”„๋ง์—์„œ๋Š” ์ƒ์„ฑ์ž ์ฃผ์ž…์ด ๊ฐ€์žฅ ๊ถŒ์žฅ๋จ.๋ฐ”๋กœ ์˜ˆ์ „ ํฌ์ŠคํŒ…์—์„œ @RequiredArgsConstructor@Servicepublic class UserService { private final UserRepository userRepository;} ์ด ์˜ˆ์ œ๋ฅผ ๊ฐ–๊ณ  ์™”์—ˆ๋Š”๋ฐ, ์ด๊ฑด ์ƒ์„ฑ์ž ์ฃผ์ž…์œผ๋กœ DIํ•ด์ฃผ๋Š” ์žฅ๋ฉด์ž„.โ€‹์ด๊ฑธ ํ•„๋“œ ์ฃผ์ž…์œผ๋กœ ํ•œ๋‹ค๋ฉด? @Autowiredprivate UserRepository userRepository; ์ด๋ ‡๊ฒŒ ๋จ.์ด๋ ‡๊ฒŒ ํ•˜๋ฉด ๋ฌธ์ œ์ ์ด์ผ๋‹จ userRepository๊ฐ€ final์ด ์•„๋‹ˆ๋ผ์„œ ๋ถˆ๋ณ€์„ฑ์ด ๊นจ์ง๊ทธ๋ฆฌ๊ณ  ์Šคํ”„๋ง์ด ์ž๋™์œผ๋กœ ๋„ฃ์–ด์ฃผ๋‹ˆ๊นŒ ์˜์กด์„ฑ ์ฃผ์ž…์ด ใ…‡ใ„ท์„œ ๋๋Š”์ง€ ์•ˆ๋ณด์ž„์™œ ์ƒ์„ฑ์ž ์ฃผ์ž…์ด ๋” ์ข‹์„๊นŒ? ๐Ÿ’‰ 1. ๋ถˆ๋ณ€์„ฑ ๋ณด์žฅ (final ์‚ฌ์šฉ ๊ฐ€๋Šฅํ•˜๋‹ˆ๊นŒ)final์ด ๋ถ™์–ด์„œ ์ค‘๊ฐ„.. 2025. 5. 3.
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