Need help with an ideea on file processing

Hello,

I have a application, which has 2 main places. The AdminPlace, for the admin, and the UserPlace for the Users. I made a helper class, which generates html from excel, which I want to use it like this: The admin uploads an excel file, from which html code gets generated and displayed in the UserPlace for the users. By now, I don't have the AdminPlace implemented. I know I need to send my file, once selected, to the server, where it gets processed and returns my String or HTML to the client. I know how to send my file to the server, but I don't know how to retrieve the result to the client.

I try to create the widget here: How do I get the String/HTML from server, what requests do I have to do and how should it be implemented ?

upkeepMenu.addItem(UserMenuConstants.MENU_ITEM_GENERAL_VIEW, new Command() {

@Override

public void execute() {

scroller.clear();

Widget generalCostsView = new HTML(/*String returned from server, or directly HTML*/);

scroller.add(generalCostsView);

}

});

Thanks in advence

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