feat: 공통 예외 구조 (#2)

src/main/java/com/baro/common/exception/CommonRequestExceptionType.java

@@ -0,0 +1,24 @@
+package com.baro.common.exception;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.HttpStatus;
+
+@RequiredArgsConstructor
+public enum CommonRequestExceptionType implements RequestExceptionType {
+
+    MISSING_PARAMETER_EXCEPTION("Request parameter is empty", HttpStatus.BAD_REQUEST),
+    ;
+
+    private final String errorMessage;
+    private final HttpStatus httpStatus;
+
+    @Override
+    public String errorMessage() {
+        return errorMessage;
+    }
+
+    @Override
+    public HttpStatus httpStatus() {
+        return httpStatus;
+    }
+}

src/main/java/com/baro/common/exception/GlobalExceptionHandler.java

@@ -0,0 +1,25 @@
+package com.baro.common.exception;
+
+import jakarta.servlet.http.HttpServletRequest;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+
+@Slf4j
+@RestControllerAdvice
+class GlobalExceptionHandler {
+
+    @ExceptionHandler(value = {RequestException.class})
+    ResponseEntity<String> handleBadRequestException(RequestException e) {
+        log.warn("[handleRequestException throw RequestException : {}", e.getMessage());
+        RequestExceptionType exceptionType = e.exceptionType();
+        return ResponseEntity.status(exceptionType.httpStatus()).body(exceptionType.errorMessage());
+    }
+
+    @ExceptionHandler(Exception.class)
+    ResponseEntity<String> handleException(HttpServletRequest request, Exception e) {
+        log.error("[ERROR] Unexpected error occurred. FROM URI: {}, ", request.getRequestURI(), e);
+        return ResponseEntity.internalServerError().body("Unknown error occurred. Please try later");
+    }
+}

src/main/java/com/baro/common/exception/RequestException.java

@@ -0,0 +1,5 @@
+package com.baro.common.exception;
+
+abstract class RequestException extends RuntimeException{
+    abstract RequestExceptionType exceptionType();
+}

src/main/java/com/baro/common/exception/RequestExceptionType.java

@@ -0,0 +1,10 @@
+package com.baro.common.exception;
+
+import org.springframework.http.HttpStatus;
+
+public interface RequestExceptionType {
+
+    String errorMessage();
+
+    HttpStatus httpStatus();
+}