[Developer] #424 fix Oracle DATE token errors

Refs #424

src/main/java/com/cloudhandson/vpdbackoffice/web/AppExceptionHandler.java

@@ -17,13 +17,17 @@ public class AppExceptionHandler {
 
   @ExceptionHandler(DataAccessException.class)
   public String handleDataAccessException(DataAccessException exception, Model model) {
-    String detail = exception.getMostSpecificCause() == null
-        ? exception.getMessage()
-        : exception.getMostSpecificCause().getMessage();
-    model.addAttribute("errorTitle", "ADB 연결 설정이 필요합니다.");
-    model.addAttribute("errorMessage",
-        "BACKOFFICE_DB_URL, BACKOFFICE_DB_USERNAME, BACKOFFICE_DB_PASSWORD를 실제 ADB 값으로 설정하고 "
-            + "./run.sh backoffice-support를 실행한 뒤 다시 시도하세요. 상세: " + detail);
+    RuntimeErrorMessage error = RuntimeErrorMessages.dataAccess(exception);
+    model.addAttribute("errorTitle", error.title());
+    model.addAttribute("errorMessage", error.message());
+    return "error";
+  }
+
+  @ExceptionHandler(Exception.class)
+  public String handleUnexpectedException(Exception exception, Model model) {
+    RuntimeErrorMessage error = RuntimeErrorMessages.unexpected(exception);
+    model.addAttribute("errorTitle", error.title());
+    model.addAttribute("errorMessage", error.message());
     return "error";
   }
 }

src/main/java/com/cloudhandson/vpdbackoffice/web/DashboardController.java

@@ -33,18 +33,14 @@ public class DashboardController {
       model.addAttribute("roles", permissionService.findRoles());
       model.addAttribute("tokens", bearerTokenService.findAll());
     } catch (DataAccessException e) {
+      RuntimeErrorMessage error = RuntimeErrorMessages.dataAccess(e);
       model.addAttribute("objects", List.of());
       model.addAttribute("roles", List.of());
       model.addAttribute("tokens", List.of());
-      model.addAttribute("setupError", dbSetupMessage(e));
+      model.addAttribute("runtimeErrorTitle", error.title());
+      model.addAttribute("runtimeErrorMessage", error.message());
+      model.addAttribute("showSupportCommand", error.showSupportCommand());
     }
     return "dashboard";
   }
-
-  private String dbSetupMessage(DataAccessException e) {
-    String detail = e.getMostSpecificCause() == null ? e.getMessage() : e.getMostSpecificCause().getMessage();
-    return "ADB 연결을 확인할 수 없습니다. BACKOFFICE_DB_URL, BACKOFFICE_DB_USERNAME, "
-        + "BACKOFFICE_DB_PASSWORD를 설정하고 ./run.sh backoffice-support를 먼저 실행하세요. 상세: "
-        + detail;
-  }
 }

src/main/java/com/cloudhandson/vpdbackoffice/web/RuntimeErrorMessage.java

@@ -0,0 +1,8 @@
+package com.cloudhandson.vpdbackoffice.web;
+
+public record RuntimeErrorMessage(
+    String title,
+    String message,
+    boolean showSupportCommand
+) {
+}

src/main/java/com/cloudhandson/vpdbackoffice/web/RuntimeErrorMessages.java

@@ -0,0 +1,71 @@
+package com.cloudhandson.vpdbackoffice.web;
+
+import java.sql.SQLException;
+import java.util.Locale;
+import org.springframework.dao.DataAccessException;
+
+final class RuntimeErrorMessages {
+
+  private RuntimeErrorMessages() {
+  }
+
+  static RuntimeErrorMessage dataAccess(DataAccessException exception) {
+    String detail = detail(exception);
+    if (looksLikeConnectionProblem(exception, detail)) {
+      return new RuntimeErrorMessage(
+          "DB 연결 설정이 필요합니다.",
+          "ADB에 연결할 수 없습니다. BACKOFFICE_DB_URL, BACKOFFICE_DB_USERNAME, "
+              + "BACKOFFICE_DB_PASSWORD를 확인하고 ./run.sh backoffice-support를 다시 실행하세요. 상세: "
+              + detail,
+          true
+      );
+    }
+    return new RuntimeErrorMessage(
+        "데이터 처리 오류가 발생했습니다.",
+        "요청을 처리하는 중 DB 데이터 타입, SQL, 또는 매핑 오류가 발생했습니다. "
+            + "입력값과 백오피스 테이블 스키마를 확인하세요. 상세: " + detail,
+        false
+    );
+  }
+
+  static RuntimeErrorMessage unexpected(Exception exception) {
+    return new RuntimeErrorMessage(
+        "요청 처리 중 오류가 발생했습니다.",
+        "예상하지 못한 오류가 발생했습니다. 입력값을 확인한 뒤 다시 시도하세요. 상세: "
+            + safeMessage(exception),
+        false
+    );
+  }
+
+  private static boolean looksLikeConnectionProblem(DataAccessException exception, String detail) {
+    String text = (exception.getMessage() + " " + detail).toLowerCase(Locale.ROOT);
+    return text.contains("connection refused")
+        || text.contains("the network adapter could not establish the connection")
+        || text.contains("io error")
+        || text.contains("ora-01017")
+        || text.contains("ora-12154")
+        || text.contains("ora-12514")
+        || text.contains("ora-12541");
+  }
+
+  private static String detail(DataAccessException exception) {
+    Throwable cause = exception.getMostSpecificCause();
+    if (cause instanceof SQLException sqlException) {
+      return trim(sqlException.getMessage());
+    }
+    return trim(cause == null ? exception.getMessage() : safeMessage(cause));
+  }
+
+  private static String safeMessage(Throwable throwable) {
+    String message = throwable.getMessage();
+    return trim(message == null || message.isBlank() ? throwable.getClass().getSimpleName() : message);
+  }
+
+  private static String trim(String value) {
+    if (value == null || value.isBlank()) {
+      return "상세 메시지가 없습니다.";
+    }
+    String normalized = value.replaceAll("\\s+", " ").trim();
+    return normalized.length() <= 300 ? normalized : normalized.substring(0, 300) + "...";
+  }
+}