javafx使用WebEngine打印小票

Question

javafx如何调用小票打印机，我的是R42D类型的，在打印的时候，有时候打有时候不打，不打的时候，重新调用一次又没问题了，请教下大神，怎么回事 ，以下是代码打印片段

 

Answer 1

文档：So the recommendation is to perform printing on a new thread and let the implementation internally schedule any tasks that need to be performed on the FX thread to be run on that thread.建议你新开个线程打印看看呢