add exception handler

Author: sabrinahaniff

src/main/java/exception/GlobalExceptionHandler.java

@@ -0,0 +1,35 @@
+package com.cyberrisk.cyber_risk_platform.exception;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+
+import java.time.LocalDateTime;
+import java.util.Map;
+
+@Slf4j
+@RestControllerAdvice
+public class GlobalExceptionHandler {
+
+    @ExceptionHandler(RuntimeException.class)
+    public ResponseEntity<Map<String, Object>> handleRuntimeException(RuntimeException ex) {
+        log.error("Runtime exception: {}", ex.getMessage());
+        return ResponseEntity.status(HttpStatus.NOT_FOUND).body(Map.of(
+            "status", 404,
+            "error", ex.getMessage(),
+            "timestamp", LocalDateTime.now().toString()
+        ));
+    }
+
+    @ExceptionHandler(Exception.class)
+    public ResponseEntity<Map<String, Object>> handleGenericException(Exception ex) {
+        log.error("Unexpected error: {}", ex.getMessage());
+        return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(Map.of(
+            "status", 500,
+            "error", "An unexpected error occurred",
+            "timestamp", LocalDateTime.now().toString()
+        ));
+    }
+}