我一直在努力將Java對象從Java通過JSNI(gwt-exporter生成)傳遞到Java,並想知道是否有人可以提供幫助? (「Person」),將它傳遞給JSNI方法(「displayPerson」),該方法調用與gwt-exporter(「CommonService.displayPerson」)公開的Java方法;然而最後階段的參數變爲空。GWT:gwt-exporter:傳遞對象
如果我傳遞一個字符串,它工作正常;它只是與我的對象我遇到了問題。
Person在另一個GWT應用程序繼承的GWT應用程序JAR中定義。
感謝您看,
邁克
GWT應用
package com.anstis.pluginserver.client;
import com.anstis.plugincommon.shared.Person;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.RootPanel;
public class PluginServer implements EntryPoint {
public void onModuleLoad() {
GWT.create(CommonService.class);
onLoadImpl();
RootPanel.get("container").add(getButton());
}
private native void onLoadImpl() /*-{
if ($wnd.jscOnLoad && typeof $wnd.jscOnLoad == 'function') $wnd.jscOnLoad();
}-*/;
private Button getButton() {
Button btn = new Button("Click!");
btn.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
Person p = new Person();
p.setName("Smurf");
p.setAge(500);
displayPerson(p);
}
});
return btn;
}
private native void displayPerson(Person person) /*-{
// The below displays shows 'person' is not null
alert("PluginServer.displayPerson.person is " + (person != null ? "not " : "") + "null");
try {
var pluginServer = new $wnd.com.anstis.pluginserver.CommonService();
// The below displays shows 'pluginServer' is not null
alert("PluginServer.displayPerson.pluginServer = " + pluginServer);
pluginServer.displayPerson(person);
} catch(err) {
alert(err);
}
}-*/;
}
CommonService.java
package com.anstis.pluginserver.client;
import org.timepedia.exporter.client.Export;
import org.timepedia.exporter.client.Exportable;
import com.anstis.plugincommon.shared.Person;
import com.anstis.plugincommon.shared.PluginCallback;
import com.google.gwt.core.client.GWT;
import com.google.gwt.user.client.Window;
@Export
public class CommonService implements Exportable {
public void displayPerson(Person person) {
//The below shows 'person' *IS* null
Window.alert("CommonService.displayPerson.person is "
+ (person != null ? "not " : "") + "null");
Window.alert("Name=" + person.getName());
}
}
Person.java
package com.anstis.plugincommon.shared;
import org.timepedia.exporter.client.Exportable;
public class Person implements Exportable {
private String name;
private int age;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}
你想通過從一個GWT-模塊實例我讀另一個。我正在爲此做一個小項目。現在它僅限於接口,但無論如何可以是有用的。它在http://code.google.com/p/gwt-remote/ – helios
順便說一句:我的stackoverflow配置文件包括我的電子郵件。 – helios