For download Invoice

src/main/java/com/ffii/tsms/config/WebConfig.java

@@ -18,7 +18,7 @@ public class WebConfig implements WebMvcConfigurer {
     registry.addMapping("/**")
         .allowedHeaders("*")
         .allowedOrigins("*")
-        .exposedHeaders("filename")
+        .exposedHeaders("Content-Disposition")
         .allowedMethods("GET", "POST", "PUT", "DELETE", "HEAD");
 
   }

src/main/java/com/ffii/tsms/modules/project/web/InvoiceController.kt

@@ -49,8 +49,7 @@ class InvoiceController(
         val pdf: Map<String, Any> = invoiceService.exportPDF(req)
 
         val jasperPrint: JasperPrint = pdf["report"] as JasperPrint
-        response.setHeader("Content-Disposition", "attachment; filename=\"${pdf["fileName"]}.pdf\"")
-
+        response.addHeader("Content-Disposition", "attachment; filename=\"${pdf["fileName"]}.pdf\"")
 
         try {
             out.write(JasperExportManager.exportReportToPdf(jasperPrint))