목차

• Spring MVC - ArgumentResolver
• Spring MVC - HttpMessageConverter
• Spring Boot Http 응답 - HTTP API, Message Body에 직접 입력
• Spring Boot 응답 - 정적 리소스, 뷰 템플릿
• Spring Boot 요청 메시지 - JSON
• Spring Boot 요청 메시지 - Text
• Spring Boot 쿼리 파라미터, HTML Form
• Spring Boot 기본 헤더 조회
• Spring Boot API 예시
• Spring Boot @RequestMapping
• Spring Boot Logging

Spring Boot Http 응답 - HTTP API, Message Body에 직접 입력

@GetMapping("/response-body-string-v1")
public void responseBodyV1(HttpServletResponse response) throws IOException {
    response.getWriter().write("ok");
}

@GetMapping("/response-body-string-v2")
public ResponseEntity<String> responseBodyV2(HttpServletResponse response) {
    return new ResponseEntity<>("ok", HttpStatus.OK);
}

@ResponseBody
@GetMapping("/response-body-string-v3")
public String responseBodyV3(HttpServletResponse response) {
    return "ok";
}

@GetMapping("/response-body-json-v1")
public ResponseEntity<HelloData> responseBodyJsonV1() {
    HelloData helloData = new HelloData();
    helloData.setUsername("userA");
    helloData.setAge(20);

    return new ResponseEntity<>(helloData, HttpStatus.OK);
}

@ResponseBody
@ResponseStatus(HttpStatus.OK)
@GetMapping("/response-body-json-v1")
public HelloData responseBodyJsonV2() {
    HelloData helloData = new HelloData();
    helloData.setUsername("userA");
    helloData.setAge(20);

    return helloData;
}