refactor : NumberFormatException을 Global Exception Handler에서 에러 처리하도록 변경

Author: JaeyoungAhn

src/main/java/com/prgmrs/voucher/global/GlobalExceptionHandler.java

@@ -1,5 +1,6 @@
 package com.prgmrs.voucher.global;
 
+import com.prgmrs.voucher.exception.NoSuchVoucherTypeException;
 import com.prgmrs.voucher.exception.WrongRangeFormatException;
 import org.springframework.dao.DataAccessException;
 import org.springframework.http.ResponseEntity;
@@ -12,4 +13,14 @@ public class GlobalExceptionHandler {
     public ResponseEntity<String> handleException(Exception e) {
         return ResponseEntity.badRequest().body(e.getMessage());
     }
+
+    @ExceptionHandler(WrongRangeFormatException.class)
+    public ResponseEntity<String> handleWrongRangeFormatException(WrongRangeFormatException e) {
+        return ResponseEntity.badRequest().body("invalid number was provided.");
+    }
+
+    @ExceptionHandler(NoSuchVoucherTypeException.class)
+    public ResponseEntity<String> handleNoSuchVoucherTypeException(NoSuchVoucherTypeException e) {
+        return ResponseEntity.badRequest().body(e.getMessage());
+    }
 }

src/main/java/com/prgmrs/voucher/util/IdGenerator.java

@@ -0,0 +1,8 @@
+package com.prgmrs.voucher.util;
+
+import java.util.UUID;
+
+public interface IdGenerator {
+
+    UUID generate();
+}

src/main/java/com/prgmrs/voucher/view/io/ManagementType.java

@@ -21,15 +21,11 @@ public enum ManagementType {
     }
 
     public static ManagementType of(String orderNumberAsString) {
-        try {
-            int orderNumber = Integer.parseInt(orderNumberAsString);
-            if (isWithinOrderNumberRange(orderNumber)) {
-                return ManagementType.values()[orderNumber];
-            }
-            throw new WrongRangeFormatException("no such option exists");
-        } catch (NumberFormatException e) {
-            throw new WrongRangeFormatException("input must be number");
+        int orderNumber = Integer.parseInt(orderNumberAsString);
+        if (isWithinOrderNumberRange(orderNumber)) {
+            return ManagementType.values()[orderNumber];
         }
+        throw new WrongRangeFormatException("no such option exists");
     }
 
     private static boolean isWithinOrderNumberRange(int orderNumber) {