> browser实例的LoadListener监听器，主要是onFinishLoadingFrame 该LoadListener提供用于接收浏览器加载事件的方法。您可以使用此侦听器来获取有关网页加载事件，文档可用性事件，加载失败事件等的通知。以下代码演示了如何注册LoadListener： ``` browser.addLoadListener(new LoadAdapter() { @Override public void onStartLoadingFrame(StartLoadingEvent event) { if (event.isMainFrame()) { System.out.println("Main frame has started loading"); } } @Override public void onProvisionalLoadingFrame(ProvisionalLoadingEvent event) { if (event.isMainFrame()) { System.out.println("Provisional load was committed for a frame"); } } @Override public void onFinishLoadingFrame(FinishLoadingEvent event) { if (event.isMainFrame()) { System.out.println("Main frame has finished loading"); } } @Override public void onFailLoadingFrame(FailLoadingEvent event) { NetError errorCode = event.getErrorCode(); if (event.isMainFrame()) { System.out.println("Main frame has failed loading: " + errorCode); } } @Override public void onDocumentLoadedInFrame(FrameLoadEvent event) { System.out.println("Frame document is loaded."); } @Override public void onDocumentLoadedInMainFrame(LoadEvent event) { System.out.println("Main frame document is loaded."); } }); ```