Web/Spring
스프링 HTTP 요청 - 메시지 바디(JSON, TEXT)
Jinn
2023. 11. 4. 16:42
텍스트 조회
@Slf4j
@Controller
public class RequestBodyStringController {
@PostMapping("/request-body-string-v1")
public void requestBodyString(HttpServletRequest request, HttpServletResponse response) throws IOException {
ServletInputStream inputStream = request.getInputStream();
String messageBody = StreamUtils.copyToString(inputStream, StandardCharsets.UTF_8);
log.info("messageBody={}", messageBody);
response.getWriter().write("ok");
}
@PostMapping("/request-body-string-v2")
public void requestBodyStringV2(InputStream inputStream, Writer responseWriter) throw IOException {
String messageBody = StreamUtils.copyToString(inputStream, StandardCharset.UTF_8);
log.info("messageBody={}", messageBody);
responseWriter.write("ok");
}
@PostMapping("/request-body-string-v3")
public HttpEntity<String> requestBodyStringV3(HttpEntity<String> httpEntity) {
String messageBody = httpEntity.getBody();
log.info("messageBody={}", messageBody);
return new HttpEntity<>("ok");
}
@ResponseBody
@PostMapping("/request-body-string-v4")
public String requestBodyStringV4(@RequestBody String messageBody) {
log.info("messageBody={}", messageBody);
return "ok";
}
}
InputStream
InputStream을 사용해서 바디 데이터를 직접 읽을 수 있다.
@PostMapping("/request-body-string-v2")
public void requestBodyStringV2(InputStream inputStream, Writer responseWriter) throw IOException {
String messageBody = StreamUtils.copyToString(inputStream, StandardCharset.UTF_8);
log.info("messageBody={}", messageBody);
responseWriter.write("ok");
}- InputStream: HTTP 요청 메시지 바디의 내용을 직접 조회
- OutputStream: HTTP 응답 메시지 바디에 직접 결과 출력
HttpEntity
@PostMapping("/request-body-string-v3")
public HttpEntity<String> requestBodyStringV3(HttpEntity<String> httpEntity) {
String messageBody = httpEntity.getBody();
log.info("messageBody={}", messageBody);
return new HttpEntity<>("ok");
}HttpEntity: HTTP 헤더 및 바디 정보를 조회
@RequestBody
@ResponseBody
@PostMapping("/request-body-string-v4")
public String requestBodyStringV4(@RequestBody String messageBody) {
log.info("messageBody={}", messageBody);
return "ok";
}@RequestBody: 바디 정보를 조회
@RequestHeader: 헤더 정보를 조회
JSON 조회
@Data
public class HelloData {
private Stirng username;
private int age;
}@Slf4j
@Controller
public class RequestBodyJsonController {
private ObjectMapper objectMapper = new ObjectMapper();
@PostMapping("/request-body-json-v1")
public void requestBodyJsonV1(HttpServeltRequest request, HttpServletResponse response) throws IOException {
ServletInputStream inputStream = request.getInputStream();
String messageBody = StreamUtils.copyToString(inputStream, StandardCharsets.UTF_8);
HelloData data = objectMapper.readValue(messageBody, HelloData.class);
log.info("username={}, age={}", data.getUsername(), data.getAge());
response.getWriter().write("ok");
}
@ResponseBody
@PostMapping("/request-body-json-v2")
public String requestBodyJsonV2(@RequestBody String messageBody) throws IOException {
HelloData data = objectMapper.readValue(messageBody, HelloData.class);
log.info("username={}, age={}", data.getUsername(), data.getAge());
return "ok";
}
@ResponseBody
@PostMapping("/request-body-json-v3")
public String requestBodyJsonV3(@RequestBody HelloData data) {
log.info("username={}, age={}", data.getUsername(), data.getAge());
return "ok";
}
@ResponseBody
@PostMapping("/request-body-json-v4")
public String requestBodyJsonV4(HttpEntity<HelloData> httpEntity) {
HelloData data = httpEntity.getBody();
log.info("username={}, age={}", data.getUsername(), data.getAge());
return "ok";
}
@ResponseBody
@PostMapping("/request-body-json-v5")
public String requestBodyJsonV5(@RequestBody HelloData data) {
log.info("username={}, age={}", data.getUsername(), data.getAge());
return data;
}
}
@RequestBody
@ResponseBody
@PostMapping("/request-body-json-v2")
public String requestBodyJsonV2(@RequestBody String messageBody) throws IOException {
HelloData data = objectMapper.readValue(messageBody, HelloData.class);
log.info("username={}, age={}", data.getUsername(), data.getAge());
return "ok";
}@RequestBody 애노테이션으로 바디 데이터를 읽고, objectMapper를 통해 자바 객체로 변환한다.
@ResponseBody
@PostMapping("/request-body-json-v3")
public String requestBodyJsonV3(@RequestBody HelloData data) {
log.info("username={}, age={}", data.getUsername(), data.getAge());
return "ok";
}String 타입으로 읽고 객체로 변환하는 과정 없이 바로 객체로 변환한다.
@ResponseBody
@PostMapping("/request-body-json-v5")
public String requestBodyJsonV5(@RequestBody HelloData data) {
log.info("username={}, age={}", data.getUsername(), data.getAge());
return data;
}
HttpEntity
@ResponseBody
@PostMapping("/request-body-json-v4")
public String requestBodyJsonV4(HttpEntity<HelloData> httpEntity) {
HelloData data = httpEntity.getBody();
log.info("username={}, age={}", data.getUsername(), data.getAge());
return "ok";
}