GWT Несколько модулей вызывает «$ wnd.alert не является функцией»

Question

Я изучаю добавление GWT к существующему проекту Spring MVC. Я успешно прошел учебник с использованием spring4gwt и получил связь между точкой входа клиента и службой.

Я добавил новый модуль в затмение и оставил в качестве мира приветствия по умолчанию. Теперь, когда я нажимаю какие-либо кнопки (либо новую кнопку hello world, либо одну из предыдущего примера), я получаю стек.

Чтобы добавить дополнительную точку входа, я просто добавил дополнительный скрипт.

Что вызывает это? мне нужно добавить модули entrypoint в мой проект по-другому?

Вот причина.

Caused by: com.google.gwt.core.client.JavaScriptException: (TypeError): $wnd.alert is not a function 
fileName: LOCALHOST 
lineNumber: 146 
stack: ("Hello, GWT World!")@LOCALHOST:146 
@:0 
(null,458830,[object MouseEvent],[object HTMLButtonElement],[object GWTJavaObject])@LOCALHOST/clariti-gwt/alert/hosted.html?alert:56 
([object MouseEvent])@LOCALHOST:38 
((function (evt) {var listener, curElem = this;while (curElem && !(listener = curElem.__listener)) {curElem = curElem.parentNode;}if (curElem && curElem.nodeType != 1) {curElem = null;}if (listener) {if (__gwt_makeJavaInvoke(1)(null, 393334, listener)) {__gwt_makeJavaInvoke(3)(null, 458830, evt, curElem, listener);}}}),[object HTMLButtonElement],[object Object])@LOCALHOST:18 
@:0 
(null,106,(function (evt) {var listener, curElem = this;while (curElem && !(listener = curElem.__listener)) {curElem = curElem.parentNode;}if (curElem && curElem.nodeType != 1) {curElem = null;}if (listener) {if (__gwt_makeJavaInvoke(1)(null, 393334, listener)) {__gwt_makeJavaInvoke(3)(null, 458830, evt, curElem, listener);}}}),[object HTMLButtonElement],[object Object])@LOCALHOST/clariti-gwt/alert/hosted.html?alert:56 
([object MouseEvent])@LOCALHOST:43 


17:04:32.466 [ERROR] [alert] Uncaught exception escaped 
com.google.gwt.event.shared.UmbrellaException: One or more exceptions caught, see full set in UmbrellaException#getCauses 
    at com.google.gwt.event.shared.SimpleEventBus.doFire(SimpleEventBus.java:214) 
    at com.google.gwt.event.shared.SimpleEventBus.fireEvent(SimpleEventBus.java:103) 
    at com.google.gwt.event.shared.HandlerManager.fireEvent(HandlerManager.java:96) 
    at com.google.gwt.user.client.ui.Widget.fireEvent(Widget.java:107) 
    at com.google.gwt.event.dom.client.DomEvent.fireNativeEvent(DomEvent.java:116) 
    at com.google.gwt.user.client.ui.Widget.onBrowserEvent(Widget.java:155) 
    at com.google.gwt.user.client.DOM.dispatchEventImpl(DOM.java:1308) 
    at com.google.gwt.user.client.DOM.dispatchEvent(DOM.java:1264) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103) 
    at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71) 
    at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:157) 
    at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:326) 
    at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:207) 
    at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:126) 
    at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:561) 
    at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:269) 
    at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:91) 
    at com.google.gwt.core.client.impl.Impl.apply(Impl.java) 
    at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:214) 
    at sun.reflect.GeneratedMethodAccessor27.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103) 
    at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71) 
    at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:157) 
    at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:281) 
    at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:531) 
    at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:352) 
    at java.lang.Thread.run(Thread.java:619) 
Caused by: com.google.gwt.core.client.JavaScriptException: (TypeError): $wnd.alert is not a function 
fileName: LOCALHOST 
lineNumber: 146 
stack: ("Hello, GWT World!")@LOCALHOST:146 
@:0 
(null,458830,[object MouseEvent],[object HTMLButtonElement],[object GWTJavaObject])@LOCALHOST/clariti-gwt/alert/hosted.html?alert:56 
([object MouseEvent])@LOCALHOST:38 
((function (evt) {var listener, curElem = this;while (curElem && !(listener = curElem.__listener)) {curElem = curElem.parentNode;}if (curElem && curElem.nodeType != 1) {curElem = null;}if (listener) {if (__gwt_makeJavaInvoke(1)(null, 393334, listener)) {__gwt_makeJavaInvoke(3)(null, 458830, evt, curElem, listener);}}}),[object HTMLButtonElement],[object Object])@LOCALHOST:18 
@:0 
(null,106,(function (evt) {var listener, curElem = this;while (curElem && !(listener = curElem.__listener)) {curElem = curElem.parentNode;}if (curElem && curElem.nodeType != 1) {curElem = null;}if (listener) {if (__gwt_makeJavaInvoke(1)(null, 393334, listener)) {__gwt_makeJavaInvoke(3)(null, 458830, evt, curElem, listener);}}}),[object HTMLButtonElement],[object Object])@LOCALHOST/clariti-gwt/alert/hosted.html?alert:56 
([object MouseEvent])@LOCALHOST:43 
    at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:237) 
    at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:126) 
    at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:561) 
    at com.google.gwt.dev.shell.ModuleSpace.invokeNativeVoid(ModuleSpace.java:289) 
    at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeVoid(JavaScriptHost.java:107) 
    at com.google.gwt.user.client.Window.alert(Window.java) 
    at com.energyintellect.alert.client.AlertView$1.onClick(AlertView.java:23) 
    at com.google.gwt.event.dom.client.ClickEvent.dispatch(ClickEvent.java:54) 
    at com.google.gwt.event.dom.client.ClickEvent.dispatch(ClickEvent.java:1) 
    at com.google.gwt.event.shared.SimpleEventBus.doFire(SimpleEventBus.java:204) 
    at com.google.gwt.event.shared.SimpleEventBus.fireEvent(SimpleEventBus.java:103) 
    at com.google.gwt.event.shared.HandlerManager.fireEvent(HandlerManager.java:96) 
    at com.google.gwt.user.client.ui.Widget.fireEvent(Widget.java:107) 
    at com.google.gwt.event.dom.client.DomEvent.fireNativeEvent(DomEvent.java:116) 
    at com.google.gwt.user.client.ui.Widget.onBrowserEvent(Widget.java:155) 
    at com.google.gwt.user.client.DOM.dispatchEventImpl(DOM.java:1308) 
    at com.google.gwt.user.client.DOM.dispatchEvent(DOM.java:1264) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103) 
    at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71) 
    at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:157) 
    at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:326) 
    at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:207) 
    at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:126) 
    at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:561) 
    at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:269) 
    at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:91) 
    at com.google.gwt.core.client.impl.Impl.apply(Impl.java) 
    at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:214) 
    at sun.reflect.GeneratedMethodAccessor27.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103) 
    at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71) 
    at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:157) 
    at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:281) 
    at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:531) 
    at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:352) 
    at java.lang.Thread.run(Thread.java:619) 

Answer 1

Вы можете попробовать ниже пример образец ..

Он работает ..

public class JSNITest { 


public void test() { 
    setShowTrigger(this); 
} 

public void runApp() { 
    SC.say("I am called..."); 
} 

public native void setShowTrigger(JSNITest obj)/*-{ 
$wnd.alert('I am a GWT JSNI function'); 
$wnd.showBlueApp = function() { 
obj.@com.example.client.JSNITest::runApp()(); 

}; 

}-*/; 

}