fix: attributeConverter milli second 길이가 두개인 경우도 반영 (#348)

* fix: mili second 길이가 두개인 경우도 반영

* fix: authExpiredAt 시간 변경

* chore: datetimeformatter 변수명 변경

(cherry picked from commit 2044f66)

src/main/java/in/koreatech/koin/domain/user/dto/StudentRegisterRequest.java

@@ -71,7 +71,7 @@ public Student toStudent(PasswordEncoder passwordEncoder, Clock clock) {
             .isDeleted(false)
             .userType(UserType.STUDENT)
             .authToken(UUID.randomUUID().toString())
-            .authExpiredAt(LocalDateTime.now(clock).plusHours(1))
+            .authExpiredAt(LocalDateTime.now(clock).plusHours(10))
             .build();
 
         return Student.builder()

src/main/java/in/koreatech/koin/global/config/LocalDateTimeAttributeConverter.java

@@ -9,22 +9,27 @@
 @Converter(autoApply = true)
 public class LocalDateTimeAttributeConverter implements AttributeConverter<LocalDateTime, String> {
 
-    private final DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss[.SSS]");
+    private final DateTimeFormatter formatterWithThreeMillis = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss[.SSS]");
+    private final DateTimeFormatter formatterWithTwoMillis = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss.SS");
 
     @Override
     public String convertToDatabaseColumn(LocalDateTime localDateTime) {
         if (localDateTime == null) {
             return null;
         }
-        return localDateTime.format(formatter);
+        return localDateTime.format(formatterWithThreeMillis);
     }
 
     @Override
     public LocalDateTime convertToEntityAttribute(String dbData) {
         if (dbData == null) {
             return null;
         }
-        return LocalDateTime.parse(dbData, formatter);
+
+        if (dbData.matches(".*\\.\\d{3}$")) {
+            return LocalDateTime.parse(dbData, formatterWithThreeMillis);
+        } else {
+            return LocalDateTime.parse(dbData, formatterWithTwoMillis);
+        }
     }
 }
-