Проблема варианта использования GWT Simple RPC: включенный код
Я пытаюсь понять, как отправить объект домена с серверной стороны на клиентскую, используя GWT RPC. Я написал очень простой пример использования, который представляет собой то, что я (и другие?) Должен уметь делать, но в настоящее время не могу приступить к работе.
Я просмотрел документы, учебные пособия и форумы, но они либо показывают передаваемые строки, либо предлагают объяснения, которые (когда я применяю их к этому) все еще не работают.
Надеюсь, кто-то может объяснить мне и другим, почему этот код не работает и как заставить его работать.
Спасибо.
Вот сообщения об ошибках.
13:12:54.328 [DEBUG] [org.redboffin.worldhug.Test] Validating newly compiled units
13:12:54.328 [ERROR] [org.redboffin.worldhug.Test] Errors in 'file:/C:/Documents%20and%20Settings/Darren/workspace/WorldHug/src/org/redboffin/worldhug/client/test/TestService.java'
13:12:54.343 [ERROR] [org.redboffin.worldhug.Test] Line 14: No source code is available for type org.redboffin.worldhug.server.test.TestObject; did you forget to inherit a required module?
13:12:54.515 [ERROR] [org.redboffin.worldhug.Test] Errors in 'file:/C:/Documents%20and%20Settings/Darren/workspace/WorldHug/src/org/redboffin/worldhug/client/test/TestServiceAsync.java'
13:12:54.515 [ERROR] [org.redboffin.worldhug.Test] Line 12: No source code is available for type org.redboffin.worldhug.server.test.TestObject; did you forget to inherit a required module?
13:12:55.953 [ERROR] [org.redboffin.worldhug.Test] Errors in 'file:/C:/Documents%20and%20Settings/Darren/workspace/WorldHug/src/org/redboffin/worldhug/client/test/TestView.java'
13:12:55.968 [ERROR] [org.redboffin.worldhug.Test] Line 42: No source code is available for type org.redboffin.worldhug.server.test.TestObject; did you forget to inherit a required module?
13:12:55.968 [ERROR] [org.redboffin.worldhug.Test] Line 46: No source code is available for type org.redboffin.worldhug.server.test.InnerObject; did you forget to inherit a required module?
13:12:55.984 [ERROR] [org.redboffin.worldhug.Test] Line 48: No source code is available for type org.redboffin.worldhug.server.test.ListObject; did you forget to inherit a required module?
13:12:56.765 [INFO] [org.redboffin.worldhug.Test] Module org.redboffin.worldhug.Test has been loaded
Вот классы проекта и файлы.
Test.gwt.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE module PUBLIC "-//Google Inc.//DTD Google Web Toolkit 2.0.0//EN" "http://google-web-toolkit.googlecode.com/svn/tags/2.0.0/distro-source/core/src/gwt-module.dtd">
<module>
<inherits name="com.google.gwt.user.User" />
<source path="client/test" />
<entry-point class="org.redboffin.worldhug.client.test.Test"></entry-point>
</module>
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<!-- Servlets -->
<servlet>
<servlet-name>testServlet</servlet-name>
<servlet-class>org.redboffin.worldhug.server.test.TestServiceImpl</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>testServlet</servlet-name>
<url-pattern>/worldhug/test/testService</url-pattern>
</servlet-mapping>
<!-- Default page to serve -->
<welcome-file-list>
<welcome-file>test.html</welcome-file>
</welcome-file-list>
</web-app>
TestObject.java
package org.redboffin.worldhug.server.test;
import java.util.ArrayList;
import java.util.List;
import com.google.gwt.user.client.rpc.IsSerializable;
public class TestObject implements IsSerializable {
private String testObjectString;
private InnerObject innerObject;
private List<ListObject> listObjects = new ArrayList<ListObject>();
public TestObject() {}
// Getters and setters removed for brevity
}
InnerObject.java
package org.redboffin.worldhug.server.test;
import com.google.gwt.user.client.rpc.IsSerializable;
public class InnerObject implements IsSerializable {
private String innerObjectString;
public InnerObject() {}
// Getters and setters removed for brevity
}
ListObject.java
package org.redboffin.worldhug.server.test;
import com.google.gwt.user.client.rpc.IsSerializable;
public class ListObject implements IsSerializable {
private String listObjectString;
public ListObject() {}
// Getters and setters removed for brevity.
}
TestService.java
package org.redboffin.worldhug.client.test;
import org.redboffin.worldhug.server.test.TestObject;
import com.google.gwt.user.client.rpc.RemoteService;
import com.google.gwt.user.client.rpc.RemoteServiceRelativePath;
/**
* The client side stub for the Test Service.
* @author Darren
*/
@RemoteServiceRelativePath("testService")
public interface TestService extends RemoteService {
TestObject test();
}
TestServiceAsync.java
package org.redboffin.worldhug.client.test;
import org.redboffin.worldhug.server.test.TestObject;
import com.google.gwt.user.client.rpc.AsyncCallback;
/**
* The async counterpart of <code>TestService</code>.
* @author Darren
*/
public interface TestServiceAsync {
void test(AsyncCallback<TestObject> callback);
}
TestServiceImpl.java
package org.redboffin.worldhug.server.test;
import java.util.List;
import org.redboffin.worldhug.client.test.TestService;
import com.google.gwt.user.server.rpc.RemoteServiceServlet;
/**
* The server side implementation of the RPC service.
* @author Darren
*/
@SuppressWarnings("serial")
public class TestServiceImpl extends RemoteServiceServlet implements TestService {
@Override
public TestObject test() {
TestObject testObject = new TestObject();
testObject.setTestObjectString("Test Object String");
InnerObject innerObject = new InnerObject();
innerObject.setInnerObjectString("Inner Object String");
testObject.setInnerObject(innerObject);
List<ListObject> listObjects = testObject.getListObjects();
ListObject listObjectOne = new ListObject();
listObjectOne.setListObjectString("List Object One");
listObjects.add(0, listObjectOne);
ListObject listObjectTwo = new ListObject();
listObjectTwo.setListObjectString("List Object Two");
listObjects.add(0, listObjectTwo);
ListObject listObjectThree = new ListObject();
listObjectThree.setListObjectString("List Object Three");
listObjects.add(0, listObjectThree);
return testObject;
}
}
TestView.java
package org.redboffin.worldhug.client.test;
import java.util.ArrayList;
import java.util.Iterator;
import org.redboffin.worldhug.server.test.InnerObject;
import org.redboffin.worldhug.server.test.ListObject;
import org.redboffin.worldhug.server.test.TestObject;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.uibinder.client.UiHandler;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.VerticalPanel;
public class TestView extends Composite {
private static TestViewUiBinder uiBinder = GWT.create(TestViewUiBinder.class);
interface TestViewUiBinder extends UiBinder<VerticalPanel, TestView> {}
@UiField Label testObjectStringLabel;
@UiField Label innerObjectStringLabel;
@UiField VerticalPanel listObjectsPanel;
@UiField Button button;
@UiField Label errorMessageLabel;
public TestView(String firstName) {
initWidget(uiBinder.createAndBindUi(this));
}
@UiHandler("button")
void onClick(ClickEvent e) {
TestServiceAsync testService = (TestServiceAsync) GWT.create(TestService.class);
AsyncCallback<TestObject> callback = new AsyncCallback<TestObject>() {
public void onSuccess(TestObject testObject) {
testObjectStringLabel.setText(testObject.getTestObjectString());
InnerObject innerObject = testObject.getInnerObject();
innerObjectStringLabel.setText(innerObject.getInnerObjectString());
ArrayList<ListObject> listObjects = (ArrayList<ListObject>) testObject.getListObjects();
Iterator<ListObject> iterator = listObjects.iterator();
while(iterator.hasNext()) {
ListObject listObject = (ListObject) iterator.next();
listObjectsPanel.add(new Label(listObject.getListObjectString()));
}
}
public void onFailure(Throwable caught) {
errorMessageLabel.setText("Error : "+caught.getMessage());
}
};
testService.test(callback);
}
}
TestView.ui.xml
<!DOCTYPE ui:UiBinder SYSTEM "http://dl.google.com/gwt/DTD/xhtml.ent">
<ui:UiBinder
xmlns:ui="urn:ui:com.google.gwt.uibinder"
xmlns:g="urn:import:com.google.gwt.user.client.ui">
<g:VerticalPanel>
<g:Label>Test Object</g:Label>
<g:Label ui:field="testObjectStringLabel"></g:Label>
<g:VerticalPanel>
<g:Label>Inner Object</g:Label>
<g:Label ui:field="innerObjectStringLabel"></g:Label>
</g:VerticalPanel>
<g:VerticalPanel ui:field="listObjectsPanel">
<g:Label>List Objects</g:Label>
</g:VerticalPanel>
<g:Button ui:field="button">Display Test Object</g:Button>
<g:Label ui:field="errorMessageLabel"></g:Label>
</g:VerticalPanel>
</ui:UiBinder>
Спасибо, что прочитали это далеко и за любую помощь, которую вы можете оказать мне (и другим).