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javaimport org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.GetMapping;@Controllerpublic class MyController { @GetMapping("/show-variable") public String showVariable(Model model) { String message = "Hello, Spring Boot!"; model.addAttribute("myVariable", message); // Add the variable to the model ..

Binary를 직접 가져오기pom.xml org.apache.httpcomponents.client5 httpclient5 5.1Spring Boot Codeimport org.springframework.core.io.InputStreamResource;import org.springframework.http.HttpHeaders;import org.springframework.http.MediaType;import org.springframework.http.ResponseEntity;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.RequestParam;impo..

Class 차원에서 mapping 설정@RestController@RequestMapping("/image")public class ImageController extends HttpServlet {Method 차원에서 mapping 설정@RequestMapping("/one")public Member getOne(String test) {// GET 방식@GetMapping("/one")public void getOne(String test) {// POST 방식@PostMapping("/one")public void getOne(String test) {

Maven javax.mail javax.mail-api 1.6.2 com.sun.mail javax.mail 1.6.2 Properties 설정Properties props = System.getProperties(); # 공통props.put("mail.smtp.host", "smtp.gmail.com");props.put("mail.smtp.ssl.trust", "smtp.gmail.com"); // "*"도 가능# ssl인 경우props.put("mail.smtp.port", 465);props.put("mail.smtp.auth", "true");props.put("mail.smtp.ssl.enable", "true");#..

@Value 사용: 변수Class 생성시, 값이 null임# application.ymlmail: host: smtp.co.kr# 정의@Componentpublic class EmailSender { @Value("${mail.host}") private String host; public EmailSender() { props = System.getProperties(); # Sprng boot 기동시, null 출력 log.debug(this.host); } public void test() { log.debug("host: " + host); }}# 호출 @RequestMapping("/test") public @ResponseBody String deGetHelloWorld(..