의존성 추가

<dependency>
			<groupId>com.fasterxml.jackson.dataformat</groupId>
			<artifactId>jackson-dataformat-xml</artifactId>
</dependency>

설정

@PutMapping(path = "/{boardNo}", consumes = "application/json")
	public ResponseEntity<String> modifyByJson(@PathVariable("boardNo") int boardNo, @RequestBody Board board) {
		log.info("modifyByJson");