GWT代码示例--执行Frame里的js function

package com.client; import com.shared.FieldVerifier; /** * Entry point classes define <code>onModuleLoad()</code>. */ public class GWT_workspace implements EntryPoint { /** * The message displayed to the user when the server cannot be reached or * returns an error. */ private static final String SERVER_ERROR = "An error occurred while " + "attempting to contact the server. Please check your network " + "connection and try again."; /** * Create a remote service proxy to talk to the server-side Greeting * service. */ private final GreetingServiceAsync greetingService = GWT .create(GreetingService.class); /** * This is the entry point method. */ public void onModuleLoad() { DecoratorPanel demopanel = new DecoratorPanel(); TextBox textBox = new TextBox(); demopanel.setWidget(textBox); demopanel.setSize("100px", "40px"); RootPanel.get().add(demopanel, 0, 0); VerticalPanel vPanel = new VerticalPanel(); vPanel.setSize("100px", "300px"); Label label = new Label("Required Link"); vPanel.add(label); RootPanel.get().add(vPanel, 0, 260); SimplePanel spanel = new SimplePanel(); final Frame frame = new Frame(); frame.ensureDebugId("workframe"); DOM.setElementAttribute(frame.getElement(), "id", "workframe"); frame.setSize("100%", "100%"); spanel.setWidget(frame); //frame.setUrl("frame.html"); //frame.setUrl("http://passport.csdn.net/account/login"); //frame.setUrl("http://localhost:8080/GWT_workspace/frame.html"); frame.setUrl("http://localhost:8080/GWT_workspace/frame.jsp"); spanel.setSize("600px", "600px"); RootPanel.get().add(spanel, 200, 0); label.addClickHandler(new ClickHandler() { @Override public void onClick(ClickEvent event) { // TODO Auto-generated method stub Element e1 = RootPanel.get().getElement(); NodeList<Element> nodelist = e1.getElementsByTagName("IFRAME"); Element element1 = nodelist.getItem(0); String s1 = element1.getInnerHTML(); //Window.alert(s1); Window.alert("hello"); String str = getFrameHTML(); //Window.alert(str); String str2 = getFrameHTML2("workframe"); Window.alert(str2); } }); } public native static String getFrameHTML() /*-{ var framearr=$doc.getElementsByTagName("IFRAME") var framefirst=framearr[0]; var str=framefirst.document.body.innerHTML; return str; }-*/; public native static String getFrameHTML2(String id) /*-{ var str=$doc.frames(id).document.body.innerHTML; $doc.frames(id).test(); return str; }-*/; }