[BOOK-79] refactor: global-util - HttpRequestMethodNotSupportedException 추가 (#15)

Author: minwoo1999

global-utils/src/main/kotlin/org/yapp/globalutils/exception/CommonErrorCode.kt

@@ -16,7 +16,9 @@ enum class CommonErrorCode(
     BAD_REQUEST(HttpStatus.BAD_REQUEST, "COMMON_003", "BAD REQUEST"),
     INVALID_REQUEST(HttpStatus.BAD_REQUEST, "COMMON_004", "INVALID REQUEST"),
     INTERNAL_SERVER_ERROR(HttpStatus.INTERNAL_SERVER_ERROR, "COMMON_005", "INTERNAL SERVER ERROR"),
-    MALFORMED_JSON(HttpStatus.BAD_REQUEST, "COMMON_006", "MALFORMED JSON");
+    MALFORMED_JSON(HttpStatus.BAD_REQUEST, "COMMON_006", "MALFORMED JSON"),
+    METHOD_NOT_ALLOWED(HttpStatus.METHOD_NOT_ALLOWED, "COMMON_007", "METHOD NOT ALLOWED");
+
 
     override fun getHttpStatus(): HttpStatus = httpStatus
     override fun getCode(): String = code

global-utils/src/main/kotlin/org/yapp/globalutils/exception/GlobalExceptionHandler.kt

@@ -5,6 +5,7 @@ import mu.KotlinLogging
 import org.springframework.http.ResponseEntity
 import org.springframework.http.converter.HttpMessageNotReadableException
 import org.springframework.validation.BindException
+import org.springframework.web.HttpRequestMethodNotSupportedException
 import org.springframework.web.bind.MethodArgumentNotValidException
 import org.springframework.web.bind.annotation.ExceptionHandler
 import org.springframework.web.bind.annotation.RestControllerAdvice
@@ -99,6 +100,24 @@ class GlobalExceptionHandler {
         return ResponseEntity(error, commonErrorCode.getHttpStatus())
     }
 
+    /**
+     * 잘못된 HTTP 메서드로 인한 HttpRequestMethodNotSupportedException를 처리합니다.
+     */
+    @ExceptionHandler(HttpRequestMethodNotSupportedException::class)
+    protected fun handleHttpRequestMethodNotSupportedException(ex: HttpRequestMethodNotSupportedException): ResponseEntity<ErrorResponse> {
+        val commonErrorCode = CommonErrorCode.METHOD_NOT_ALLOWED
+
+        log.warn { "HTTP method not supported: ${ex.method} for ${ex.supportedHttpMethods?.joinToString()}" }
+
+        val error = ErrorResponse.builder()
+            .status(commonErrorCode.getHttpStatus().value())
+            .message("HTTP method '${ex.method}' not supported for this endpoint. Supported methods: ${ex.supportedHttpMethods?.joinToString()}")
+            .code(commonErrorCode.getCode())
+            .build()
+
+        return ResponseEntity(error, commonErrorCode.getHttpStatus())
+    }
+
 
     /**
      * 메서드 파라미터 검증 실패(@RequestParam, @PathVariable 등)