Merge pull request #38 from vimal-tech-starter/feature/new-update-phase-11

fix: add exception logging

Author: vimal-java-dev

src/main/java/com/vimaltech/contactapi/exception/GlobalExceptionHandler.java

@@ -1,6 +1,8 @@
 package com.vimaltech.contactapi.exception;
 
 import com.vimaltech.contactapi.dto.ApiResponse;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.MethodArgumentNotValidException;
 import org.springframework.web.bind.annotation.*;
@@ -10,6 +12,8 @@
 @RestControllerAdvice
 public class GlobalExceptionHandler {
 
+    private static final Logger log = LoggerFactory.getLogger(GlobalExceptionHandler.class);
+
     @ExceptionHandler(MethodArgumentNotValidException.class)
     public ResponseEntity<ApiResponse> handleValidationException(
             MethodArgumentNotValidException ex) {
@@ -21,6 +25,9 @@ public ResponseEntity<ApiResponse> handleValidationException(
                 .map(fieldError -> fieldError.getDefaultMessage())
                 .orElse("Validation error");
 
+        // Optional but useful
+        log.warn("Validation failed: {}", errorMessage);
+
         ApiResponse response = new ApiResponse(
                 false,
                 errorMessage,
@@ -33,6 +40,9 @@ public ResponseEntity<ApiResponse> handleValidationException(
     @ExceptionHandler(Exception.class)
     public ResponseEntity<ApiResponse> handleGenericException(Exception ex) {
 
+        // 🔥 CRITICAL LINE (THIS WAS MISSING)
+        log.error("Unhandled exception occurred", ex);
+
         ApiResponse response = new ApiResponse(
                 false,
                 "Something went wrong. Please try again later.",