问题
Chrome is on the verge of definitly break compatability with NPAPI, and IE breaking with ActiveX the future of Java Applets is dark. Currenty we actively use a secure applet for out client organizations that enables their users to upload a bunch of files from their file system to our servers with the click of a button. The applet has full access to any configured drive, including network drives.
With the imminent death of the applet this functionality is going to be lost if we don't find an alternative. I have already tried to explore different solutions, including the chrome FileSystem API but that is currently only available for Chrome (http://caniuse.com/#feat=filesystem) and has limited access.
Does anybody know about an alternative to keep supporting the much appreciated functionality? Unfortunately we are obligated to support all browser down to IE8.
回答1:
I've written a post about this here.
Once Google Chrome was the first to announce that they won’t be supporting NPAPI anymore, they were also the first to provide a new architecture in order to rewrite your code to work on their browser. You can take a look on Native Messaging, which “can exchange messages with native applications using an API that is similar to the other message passing APIs”. The problem is that this approach only works on Chrome, is not something that you can adapt to other browsers.
A more useful approach is FireBreath, a browser plugin in a post NPAPI world. Check the words below from one buddy of the project:
“FireBreath 2 will allow you to write a plugin that works in NPAPI, ActiveX, or through Native Messaging; it’s getting close to ready to go into beta. It doesn’t have any kind of real drawing support, but would work for what you describe. The install process is a bit of a pain, but it works. The FireWyrm protocol that the native messaging component uses could be used with any connection that allows passing text data; it should be possible to make it work with js-ctypes on firefox or plausibly WEB-RTC or even CORS AJAX in some way. For now the only thing we needed to solve was Chrome, but we did it in a way that should be pretty portable to other technologies.”
回答2:
In light of the answer provided by Uly Marins I have researched the options suggested. Unfortunately these options weren't viable for our application, because the mayority of our users do not have sufficient rights to install third party plugins. Additionally the API is still in Beta which won't do any good in a stable production environment.
The main problem we wanted to solve was the abbility to delete files from the accessed folders. It seemed like one of the mayor goals of the removal of the NPAPI support was exactly to prevent this kind of possibility. Therefore we needed to reduce our goals to a simple solution that was still acceptable for our users, with the additional training on how to clear the selected folder manually (because most of our users are almost computer illiterate and needed to access network folders).
Long answer short. The requested solution is just not possible anymore and had to be replaced by a simpler solution and additional training.
来源：https://stackoverflow.com/questions/30457689/alternative-java-applet-network-drive-access