Handling file uploads
Body handler is also used to handle multi-part file uploads.

If a body handler is on a matching route for the request, any file uploads will be automatically streamed to the uploads directory, which is file-uploads by default.

Each file will be given an automatically generated file name, and the file uploads will be available on the routing context with fileUploads.

Here’s an example:

router.route().handler(BodyHandler.create());

router.post("/some/path/uploads").handler(routingContext -> {

Set<FileUpload> uploads = routingContext.fileUploads();
// Do something with uploads....

});
Each file upload is described by a FileUpload instance, which allows various properties such as the name, file-name and size to be accessed.