ADD more error handling

src/main/java/com/ddf/vodsystem/controllers/GlobalExceptionHandler.java

@@ -2,12 +2,32 @@ package com.ddf.vodsystem.controllers;
 
 import com.ddf.vodsystem.exceptions.JobNotFinished;
 import com.ddf.vodsystem.exceptions.JobNotFound;
+import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
+import org.springframework.web.HttpMediaTypeNotSupportedException;
 import org.springframework.web.bind.annotation.ControllerAdvice;
 import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.multipart.MultipartException;
+import org.springframework.web.multipart.support.MissingServletRequestPartException;
 
 @ControllerAdvice
 public class GlobalExceptionHandler {
+    @ExceptionHandler({ MultipartException.class })
+    public ResponseEntity<String> handleMultipartException(MultipartException ex) {
+        return ResponseEntity.badRequest().body("Request is not multipart/form-data.");
+    }
+
+    @ExceptionHandler({ MissingServletRequestPartException.class })
+    public ResponseEntity<String> handleMissingPart(MissingServletRequestPartException ex) {
+        return ResponseEntity.badRequest().body("Required file part is missing.");
+    }
+
+    @ExceptionHandler({ HttpMediaTypeNotSupportedException.class })
+    public ResponseEntity<String> handleUnsupportedMediaType(HttpMediaTypeNotSupportedException ex) {
+        return ResponseEntity.status(HttpStatus.UNSUPPORTED_MEDIA_TYPE)
+                .body("Unsupported media type: expected multipart/form-data.");
+    }
+
     @ExceptionHandler(IllegalArgumentException.class)
     public ResponseEntity<String> handleIllegalArgument(IllegalArgumentException ex) {
         return ResponseEntity.status(400).body(ex.getMessage());