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1.@RestController

Spring Framework์—์„œ RESTful ์›น ์„œ๋น„์Šค์˜ ์ปจํŠธ๋กค๋Ÿฌ๋ฅผ
์‰ฝ๊ฒŒ ๋งŒ๋“ค ์ˆ˜ ์žˆ๋„๋ก ์ œ๊ณต๋˜๋Š” ์• ๋…ธํ…Œ์ด์…˜์ž…๋‹ˆ๋‹ค.

@Controller์™€ @ResponseBody๋ฅผ ๊ฒฐํ•ฉํ•œ ํ˜•ํƒœ๋กœ, ํด๋ž˜์Šค ๋ ˆ๋ฒจ์—์„œ ์‚ฌ์šฉํ•˜๋ฉด 
ํ•ด๋‹น ํด๋ž˜์Šค์˜ ๋ชจ๋“  ํ•ธ๋“ค๋Ÿฌ ๋ฉ”์„œ๋“œ๊ฐ€ HTTP ์‘๋‹ต ๋ณธ๋ฌธ์„ ์ง์ ‘ ์ „์†กํ•˜๋„๋ก ์„ค์ •๋ฉ๋‹ˆ๋‹ค.

2.@RestController ์—ญํ• 

2-1.RESTful ์›น ์„œ๋น„์Šค ์ปจํŠธ๋กค๋Ÿฌ

RESTful API๋ฅผ ๊ตฌํ˜„ํ•  ๋•Œ ์‚ฌ์šฉ

2-2.์ž๋™ JSON ๋ณ€ํ™˜

๋ฉ”์„œ๋“œ์˜ ๋ฐ˜ํ™˜ ๊ฐ’์„ JSON ํ˜•์‹์œผ๋กœ ์ง๋ ฌํ™”ํ•˜์—ฌ HTTP ์‘๋‹ต ๋ณธ๋ฌธ์œผ๋กœ ์ „์†ก


๋ฉ”์„œ๋“œ์˜ ๋ฐ˜ํ™˜ ๊ฐ’์ธ User ๊ฐ์ฒด๊ฐ€ JSON ํ˜•์‹์œผ๋กœ ๋ณ€ํ™˜๋˜์–ด HTTP ์‘๋‹ต ๋ณธ๋ฌธ์œผ๋กœ ์ „์†ก๋ฉ๋‹ˆ๋‹ค.
@RestController
@RequestMapping("/api")
public class UserController {

    @GetMapping("/user")
    public User getUser() {
        return new User("John", "Doe");
    }
}