feat (#3) : 예외 정리

src/main/java/com/codingwasabi/howtodo/error/ControllerExceptionHandler.java

@@ -0,0 +1,13 @@
+package com.codingwasabi.howtodo.error;
+
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+
+@RestControllerAdvice
+public class ControllerExceptionHandler {
+	@ExceptionHandler({IllegalArgumentException.class, IllegalStateException.class})
+	public ResponseEntity<String> handleIllegalException(RuntimeException e) {
+		return ResponseEntity.badRequest().body(e.getMessage());
+	}
+}

src/main/java/com/codingwasabi/howtodo/web/comment/CommentController.java

@@ -38,14 +38,13 @@ public GetCommentsByUserIdResponse getCommentsByUserId(@PathVariable("accountId"
 	}
 
 	@PostMapping("/calendar/{accountId}/result/comments/{targetDate}")
-	public ResponseEntity<String> createComments(@LoginAccount Account account,
+	public ResponseEntity<Void> createComments(@LoginAccount Account account,
 												 @PathVariable("accountId") Long accountId,
 												 @PathVariable("targetDate") @DateTimeFormat(pattern = "yyyy-MM-dd")
 													 LocalDate date,
 												 @RequestBody CreateCommentsRequest createCommentsRequest) {
 		if (account.isAnonymous()) {
-			return ResponseEntity.badRequest()
-								 .body("need authenticate before write comment");
+			throw new IllegalStateException("need authenticate before write comment");
 		}
 
 		Comment comment = Comment.builder()

src/main/java/com/codingwasabi/howtodo/web/exam/ExamController.java

@@ -28,7 +28,9 @@ public class ExamController {
 
 	@GetMapping("/my/exams")
 	public GetMyExamResponse getMyExam(@LoginAccount Account account) {
-
+		if(account.isAnonymous()) {
+			throw new IllegalStateException("need authenticate before retrieve my exam");
+		}
 		return new GetMyExamResponse(examService.getMyExam(account)
 												.stream()
 												.map(ExamResponse::new)