Watermark fixes

src/main/java/stirling/software/SPDF/controller/api/security/WatermarkController.java

@@ -44,8 +44,8 @@ public class WatermarkController {
 	@Operation(summary = "Add watermark to a PDF file", description = "This endpoint adds a watermark to a given PDF file. Users can specify the watermark type (text or image), rotation, opacity, width spacer, and height spacer. Input:PDF Output:PDF Type:SISO")
 	public ResponseEntity<byte[]> addWatermark(
 			@RequestPart(required = true, value = "fileInput") @Parameter(description = "The input PDF file to add a watermark") MultipartFile pdfFile,
-			@RequestPart(required = true) @Parameter(description = "The watermark type (text or image)") String watermarkType,
+			@RequestParam(required = true) @Parameter(description = "The watermark type (text or image)") String watermarkType,
-			@RequestPart(required = false) @Parameter(description = "The watermark text") String watermarkText,
+			@RequestParam(required = false) @Parameter(description = "The watermark text") String watermarkText,
 			@RequestPart(required = false) @Parameter(description = "The watermark image") MultipartFile watermarkImage,
 			
 			@RequestParam(defaultValue = "roman", name = "alphabet") @Parameter(description = "The selected alphabet", 

src/main/resources/application.properties

@@ -15,7 +15,10 @@ server.error.whitelabel.enabled=false
 server.error.include-stacktrace=always
 server.error.include-exception=true
 server.error.include-message=always
-\
+
+#logging.level.org.springframework.web=DEBUG
+
+
 server.servlet.session.tracking-modes=cookie
 server.servlet.context-path=${APP_ROOT_PATH:/}
 

src/main/resources/static/js/downloader.js

@@ -14,6 +14,13 @@ $(document).ready(function() {
 		const url = this.action;
 		const files = $('#fileInput-input')[0].files;
 		const formData = new FormData(this);
+        
+        // Remove empty file entries
+        for (let [key, value] of formData.entries()) {
+            if (value instanceof File && !value.name) {
+                formData.delete(key);
+            }
+        }
 		const override = $('#override').val() || '';
 		const originalButtonText = $('#submitBtn').text();
 		$('#submitBtn').text('Processing...');
@@ -159,6 +166,21 @@ async function submitMultiPdfForm(url, files) {
 	let formData = new FormData($('form')[0]);
 	formData.delete('fileInput');
 
+	for (let [key, value] of formData.entries()) {
+            console.log(key, value);
+        }
+        
+        // Remove empty file entries
+        for (let [key, value] of formData.entries()) {
+            if (value instanceof File && !value.name) {
+                formData.delete(key);
+            }
+        }
+        console.log("## AFTER ## ")
+        for (let [key, value] of formData.entries()) {
+            console.log(key, value);
+        }
+        
 	const CONCURRENCY_LIMIT = 8;
 	const chunks = [];
 	for (let i = 0; i < Array.from(files).length; i += CONCURRENCY_LIMIT) {