How to Print in Vaadin

问题

I have a VerticalLayout filled with components in Vaadin. PLease i will to print this layout exactly as it is to an A4 paper. Any Idea how to do this, Code Sample will be great.

回答1:

Straight out of the Vaadin doc…

Printing the Browser Window

Vaadin does not have special support for launching the printing in browser, but you can easily use the JavaScript print() method that opens the print window of the browser.

Button print = new Button("Print This Page");
print.addClickListener(new Button.ClickListener() {
    public void buttonClick(ClickEvent event) {
        // Print the current page
        JavaScript.getCurrent().execute("print();");
    }
});

The button in the above example would print the current page, including the button itself. You can hide such elements in CSS, as well as otherwise style the page for printing. Style definitions for printing are defined inside a @media print {} block in CSS.

回答2:

There's no "built-in" API for printing in Vaadin. You have to use the browser's native printing API.

来源：https://stackoverflow.com/questions/42963270/how-to-print-in-vaadin