java - 如何在 Vaadin 中打印

Question

我有一个 VerticalLayout，其中填充了 Vaadin 中的组件。请我按照 A4 纸的方式打印此布局。任何想法如何做到这一点，代码示例都会很棒。

Answer 1

直接出自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.