vaadin - How to know that Download has been completed -

-

i sending file download @ client browser using following code:-

    filedownloadresource fdr = new filedownloadresource(file, app);     btnget.getwindow().open(fdr);

everything works fine when add file.delete(); after that, exception file or directory not exist. can understand before download component done file, file getting deleted. there way notification download complete , safe delete file server?


Comments

Post a Comment

Popular posts from this blog

django - (fields.E300) Field defines a relation with model 'AbstractEmailUser' which is either not installed, or is abstract -

-
i trying create customuser django project email username , add radio button truck , company. in registration process email-id registered per truck or company. mentioned radio button 'tag' , add manytomany field tag in emailuser model. when makemigrations, raising error : (fields.e300) field defines relation model 'abstractemailuser' either not installed, or abstract. i quite new django , not sure whether have created correct code wants. please me solving this. here code, models.py: import django django.contrib.auth.models import ( abstractbaseuser, baseusermanager, permissionsmixin) django.core.mail import send_mail django.db import models django.utils import timezone django.utils.translation import ugettext_lazy _ class emailusermanager(baseusermanager): """custom manager emailuser.""" def _create_user(self, email, password, is_staff, is_superuser, **extra_fields): """create , save emailus...
Read more

github - Git errors while pushing -

-
Image
i input "git add -a" , gives me error: "fatal: unknown index entry format 65540000". i looked every other sources , not figure out means. then, tried pushing using sourcetree , got error below: all added codes , few imagefiles. not sure causing problem. last commit did month ago, btw. first commit after upgraded xcode 7.0 version. thanks this first commit after upgraded xcode 7.0 version then try clone again repo xcode7, , add change in new local repo. should work better in clone entirely managed new xcode.
Read more

php - Using grpc in Laravel, "Class 'Grpc\ChannelCredentials' not found." -

-
i trying use grpc in laravel project. this part of composer.json file: "require": { ... "datto/protobuf-php": "dev-master", "google/auth": "^0.7.0", "grpc/grpc": "dev-release-0_13", ... } i have generated php file proto file. placed in app/services/ , included in composer.json autoload.files section. have run composer install without issues. i have created route testing. has following code: $client = new vat_service\vatserviceclient('localhost:50051', [ 'credentials' => grpc\channelcredentials::createinsecure() ]); but receive response class 'grpc\channelcredentials' not found. when visit route. the laravel app running in homestead vagrant box. i don't know how proceed. missing dependency? did miss install something? i have solved problem, not sure of below steps solution. things tried: i installed grpc-beta in homestead box (...
Read more