Merge pull request #80 from TRIP-Side-Project/feature/#77-exception

예외 전역 처리 구조 세팅

src/main/java/com/api/trip/common/exception/CustomException.java

@@ -0,0 +1,14 @@
+package com.api.trip.common.exception;
+
+import lombok.Getter;
+
+@Getter
+public abstract class CustomException extends RuntimeException {
+
+    protected CustomException(ErrorCode errorCode){
+        this.errorCode = errorCode;
+    }
+    private ErrorCode errorCode;
+
+
+}

src/main/java/com/api/trip/common/exception/ErrorCode.java

@@ -0,0 +1,20 @@
+package com.api.trip.common.exception;
+
+import lombok.Getter;
+import org.springframework.http.HttpStatus;
+
+@Getter
+public enum ErrorCode {
+
+    NOT_FOUND_MEMBER("회원이 존재하지 않습니다.", HttpStatus.NOT_FOUND);
+
+    private final String message;
+    private final HttpStatus status;
+
+    ErrorCode(String message, HttpStatus status) {
+        this.message = message;
+        this.status = status;
+    }
+
+
+}

src/main/java/com/api/trip/common/exception/ErrorResponse.java

@@ -0,0 +1,12 @@
+package com.api.trip.common.exception;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+
+@Data
+@AllArgsConstructor
+public class ErrorResponse{
+    private String errorMessage;
+
+
+}

src/main/java/com/api/trip/common/exception/GlobalExceptionHandler.java

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+package com.api.trip.common.exception;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.http.ResponseEntity;
+import org.springframework.validation.FieldError;
+import org.springframework.web.bind.MethodArgumentNotValidException;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+import org.springframework.web.multipart.MaxUploadSizeExceededException;
+
+import java.util.HashMap;
+import java.util.Map;
+
+@Slf4j
+@RestControllerAdvice
+public class GlobalExceptionHandler {
+
+    /**
+     * 서비스 로직 도중 발생하는 에러들을 커스텀하여 응답값을 내려줍니다.
+     */
+    @ExceptionHandler(CustomException.class)
+    public ResponseEntity<ErrorResponse> handleCustomException(CustomException e){
+        ErrorCode errorCode = e.getErrorCode();
+        log.error(errorCode.getMessage());
+        return ResponseEntity.status(errorCode.getStatus()).body( new ErrorResponse(errorCode.getMessage()));
+    }
+
+    /**
+     * 바인딩 에러 json형식으로 에러가 있는 파라미터 값에 메시지를 담아 넘겨줍니다.
+     *  itemPrice : 아이템 가격을 100원 이상 1,000,000,000원 이하여야 합니다.
+     */
+    @ExceptionHandler(MethodArgumentNotValidException.class)
+    public ResponseEntity<Map<String, String>> handleValidationExceptions(MethodArgumentNotValidException ex){
+        Map<String, String> errors = new HashMap<>();
+        ex.getBindingResult().getAllErrors()
+                .forEach(c -> errors.put(((FieldError) c).getField(), c.getDefaultMessage()));
+        log.error(ex.getMessage());
+        return ResponseEntity.badRequest().body(errors);
+    }
+
+}

src/main/java/com/api/trip/common/exception/custom_exception/NotFoundException.java

@@ -0,0 +1,10 @@
+package com.api.trip.common.exception.custom_exception;
+
+import com.api.trip.common.exception.CustomException;
+import com.api.trip.common.exception.ErrorCode;
+
+public class NotFoundException extends CustomException {
+    public NotFoundException(ErrorCode errorCode) {
+        super(errorCode);
+    }
+}