异步更新vaadin组件 [英] Asynchronously update vaadin components
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问题描述
我有这样的code更新vaadin按钮的标题每3秒。
I have this code for updating vaadin button's caption every 3 seconds.
TimerTask tt = new TimerTask() {
@Override
public void run() {
try {
logger.debug("adding l to button's caption");
btn.setCaption(eventsButton.getCaption() + "l");
} catch (Exception ex) {
logger.error(ex.getMessage());
}
}
};
Timer t = new Timer(true);
t.scheduleAtFixedRate(tt, 0, 3000);
然而,它不能虽然它是每3秒(由日志文件判断)来执行改变按钮的标题。如何访问vaadin的GUI组件从另一个线程?
However, it can't change button's caption although it is executed every 3 seconds(judging by the log file). How can I access vaadin's GUI components from another thread?
推荐答案
有是一个名为ICEPush插件这不正是我需要的。
There's an addon named ICEPush which does exactly what I needed.
https://vaadin.com/directory#addon/icepush
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