spring boot을 웹서버로 작동시키기 위해서 spring-boot-starter-web 추가

spring boot을 웹서버로 작동시키기 위해서는 spring-boot-starter-web 추가해줘야 한다.

build.gradle.kts

dependencies {
	implementation("org.springframework.boot:spring-boot-starter")
	implementation("org.springframework.boot:spring-boot-starter-web") // 추가됨
	testImplementation("org.springframework.boot:spring-boot-starter-test")
	testRuntimeOnly("org.junit.platform:junit-platform-launcher")
}

gradle에 추가하고 나서 코키리 아이콘 눌러준다.

그리고 나서 아래와 같이 Controller 추가해주면 된다.
GET "/users" 예시:

package com.cozzin.homecompany;

import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class RootController {
    @GetMapping("/users")
    public ResponseEntity<String> getUser(@RequestParam(value = "email") String email) {
        if (email == null || email.isEmpty()) {
            return ResponseEntity.status(HttpStatus.BAD_REQUEST)
                    .body("Email parameter is required");
        }

        return ResponseEntity.ok(
                String.format("Your email is: %s", email)
        );
    }
}

package com.cozzin.workwell.controller

import com.cozzin.workwell.dto.CreateUserRequest
import org.springframework.http.ResponseEntity
import org.springframework.web.bind.annotation.PostMapping
import org.springframework.web.bind.annotation.RequestBody
import org.springframework.web.bind.annotation.RequestMapping
import org.springframework.web.bind.annotation.RestController

@RestController
@RequestMapping("/users")
class UsersController {

    @PostMapping
    fun createUser(@RequestBody request: CreateUserRequest): ResponseEntity<String> {
        return ResponseEntity.ok("Hello")
    }
}

package com.cozzin.workwell.dto

data class CreateUserRequest(
    val name: String,
    val password: String,
    val email: String
)

$ curl -X POST -H "Content-Type: application/json" -d '{"name":"cozzin", "password":"password123", "email":"cozzin@example.com"}' http://localhost:8080/users
Hello% 

https://it-techtree.tistory.com/entry/build-and-execute-springboot