问题
I was developing a GWT application with a PHP backend. During development, everything was OK. I was developing my GWT app from my webroot and everything was working correctly and was properly interacting with php.
However, when I compiled the GWT app and place it the same place where my original GWT app was and try to run it, the interface shows up but every place where to i need to interact with the server, it fails outputting application error messages which i set whenever my web app cannot interact with the server
来源：https://stackoverflow.com/questions/8394136/gwt-compiled-application-cannot-interact-with-php-backend