SpringSpring MVC

Spring Boot 요청 메시지 - JSON

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Spring Boot 요청 메시지 - JSON

@PostMapping("/request-body-json-v1")
public void requestBodyJsonV1(HttpServletRequest request, HttpServletResponse response) throws IOException {
    ServletInputStream inputStream = request.getInputStream();
    String messageBody = StreamUtils.copyToString(inputStream, StandardCharsets.UTF_8);

    log.info("messageBody={}", messageBody);
    HelloData helloData = objectMapper.readValue(messageBody, HelloData.class);
    log.info("username={}, age={}", helloData.getUsername(), helloData.getAge());

    response.getWriter().write("ok");
}

RequestBody 어노테이션 사용하기

RequestParam 어노테이션과 다르게 RequestBody 어노테이션은 생략하면 안된다.

@ResponseBody
@PostMapping("/request-body-json-v2")
public String requestBodyJsonV2(@RequestBody String messageBody) throws IOException {
    log.info("messageBody={}", messageBody);
    HelloData helloData = objectMapper.readValue(messageBody, HelloData.class);
    log.info("username={}, age={}", helloData.getUsername(), helloData.getAge());

    return "ok";
}

DTO 사용하기

@ResponseBody
@PostMapping("/request-body-json-v3")
public String requestBodyJsonV3(@RequestBody HelloData helloData) throws IOException {
    log.info("username={}, age={}", helloData.getUsername(), helloData.getAge());
    return "ok";
}
@ResponseBody
@PostMapping("/request-body-json-v4")
public String requestBodyJsonV4(HttpEntity<HelloData> data) throws IOException {
    HelloData body = data.getBody();
    log.info("username={}, age={}", body.getUsername(), body.getAge());
    return "ok";
}
@ResponseBody
@PostMapping("/request-body-json-v5")
public HelloData requestBodyJsonV5(@RequestBody HelloData data) throws IOException {
    log.info("username={}, age={}", data.getUsername(), data.getAge());
    return data;
}
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