Discussion :

[af.zakaria]

Bonjour,

Je suis débutant en GWT. Je commence à faire une application GWT dont j'utilise aussi Hibernate et Spring.

Je rencontre des erreurs lors de l'exécution au niveau de GWT.

Voilà la structure de mon application :



Voilà ma classe GWT_Test1.java :

Code :

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package com.afkir.client;
 
import java.util.ArrayList;
import java.util.List;
 
import org.springframework.context.support.ClassPathXmlApplicationContext;
 
import com.afkir.model.User;
import com.afkir.shared.FieldVerifier;
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.event.dom.client.KeyCodes;
import com.google.gwt.event.dom.client.KeyUpEvent;
import com.google.gwt.event.dom.client.KeyUpHandler;
import com.google.gwt.event.logical.shared.SelectionEvent;
import com.google.gwt.event.logical.shared.SelectionHandler;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.WindowResizeListener;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.DialogBox;
import com.google.gwt.user.client.ui.DockPanel;
import com.google.gwt.user.client.ui.FlexTable;
import com.google.gwt.user.client.ui.Grid;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.TabPanel;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.VerticalPanel;
 
/**
 * Entry point classes define <code>onModuleLoad()</code>.
 */
public class GWT_Test1 implements EntryPoint {
 
private static final int LIST_TAB_INDEX = 2; 
 
	//ui
	private final TabPanel tabPanel = new TabPanel();
	private Grid createContent;
	private FlexTable listContent = new FlexTable();
 
	private final TextBox txtNewProductId = new TextBox();
	private final TextBox txtNewProductName = new TextBox();
	private final TextBox txtNewProductVendorName = new TextBox();
	private final Button btnSaveNewProduct = new Button("Save");
 
 
	//service
	private UserServiceAsync userService = GWT.create(UserService.class);
 
	public void onModuleLoad() {
 
		createContent = createCreateContent();
 
		tabPanel.setStyleName("tabPanel");
 
		tabPanel.add(createContent, "Create Product");
		tabPanel.add(listContent, "List Products");
		tabPanel.addSelectionHandler(new SelectionHandler<Integer>() {
 
			@Override
			public void onSelection(SelectionEvent<Integer> event) {
				if (event.getSelectedItem() == LIST_TAB_INDEX) {
					//we're in list-products
 
					//clear list
					listContent.removeAllRows();
 
					listContent.setText(0, 0, "Id");
					listContent.setText(0, 1, "Name");
					listContent.setText(0, 2, "Surname");
 
					userService.list(new AsyncCallback<List<User>>() {
 
						@Override
						public void onFailure(Throwable caught) {
							Window.alert(caught.getMessage());
						}
 
						@Override
						public void onSuccess(List<User> result) {
							for(User user : result) {
 
								int row = listContent.getRowCount();
								listContent.setText(row, 0, user.getId() + "");
								listContent.setText(row, 1, user.getName());
								listContent.setText(row, 2, user.getSurname());
							}
						}
 
					});
				}
			}
		});
 
		RootPanel.get("root").add(tabPanel);
 
		tabPanel.selectTab(0);
	}
 
	private Grid createCreateContent() {
		Grid grid = new Grid(6, 2);
 
		grid.setText(0, 0, "Product Id:");
		grid.setWidget(0, 1, txtNewProductId);
 
		grid.setText(0, 0, "Product Name:");
		grid.setWidget(0, 1, txtNewProductName);
 
		grid.setText(1, 0, "Vendor Name:");
		grid.setWidget(1, 1, txtNewProductVendorName);
 
		grid.setText(4, 0, "");
		grid.setText(4, 1, "");
 
		grid.setText(5, 0, "");			
		grid.setWidget(5, 1, btnSaveNewProduct);
 
		btnSaveNewProduct.addClickHandler(new ClickHandler() {
 
			@Override
			public void onClick(ClickEvent event) {
				User user = new User();
				user.setId(Integer.parseInt(txtNewProductName.getText()));
				user.setName(txtNewProductName.getText());
				user.setSurname(txtNewProductVendorName.getText());
				List<String> users = new ArrayList<String>();
 
				userService.save(user, new AsyncCallback<Void>() {
 
					@Override
					public void onSuccess(Void result) {
						Window.alert("Product successfully saved!");
						clearNewForm();
					}
 
					@Override
					public void onFailure(Throwable caught) {
						Window.alert(caught.getMessage());
					}
				});
			}
		});
 
		return grid;
	}
 
	private void clearNewForm() {
		txtNewProductId.setText("");
		txtNewProductName.setText("");
		txtNewProductVendorName.setText("");
	}
 
}

Voilà mon interface UserService :

Code :

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package com.afkir.client;
 
import java.util.List;
 
import com.afkir.model.User;
import com.google.gwt.user.client.rpc.RemoteService;
import com.google.gwt.user.client.rpc.RemoteServiceRelativePath;
 
@RemoteServiceRelativePath("userServices/userService")
public interface UserService extends RemoteService {
 
	public List<User> list();
	public void save(User user);
 
}

Voilà mon interface UserServiceAsync :

Code :

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package com.afkir.client;
 
import java.util.List;
 
import com.afkir.model.User;
import com.google.gwt.user.client.rpc.AsyncCallback;
 
public interface UserServiceAsync {
 
	void list(AsyncCallback<List<User>> callback);
	void save(User user, AsyncCallback<Void> callback);
 
}

Voilà ma classe UserServiceImpl :

Code :

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package com.afkir.server;
 
import java.util.List;
 
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
 
import com.afkir.client.UserService;
import com.afkir.model.User;
 
@Service("userService")
@Transactional
public class UserServiceImpl implements UserService {
 
	@Autowired
	private SessionFactory sessionFactory;
 
	@Override
	public List<User> list() {
		return sessionFactory.getCurrentSession().createQuery("from User").list();
	}
 
	@Override
	public void save(User user) {
		sessionFactory.getCurrentSession().save(user);
	}
 
}

Voilà mon fichier web.xml :

Code :

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<?xml version="1.0" encoding="UTF-8" standalone="no"?><web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.5" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee                http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
 
    <listener>		
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>
	<listener>
       <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
  	</listener>
 
	<context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>
 
	<servlet>
 		<servlet-name>spring4gwt</servlet-name>
 		<servlet-class>org.spring4gwt.server.SpringGwtRemoteServiceServlet</servlet-class>
  	</servlet>
  	<servlet-mapping>
 		<servlet-name>spring4gwt</servlet-name>
 		<url-pattern>/GWT_Test1/userServices/*</url-pattern>
  	</servlet-mapping>
  	
  <!-- Servlets -->
  <servlet>
    <servlet-name>greetServlet</servlet-name>
    <servlet-class>com.afkir.server.GreetingServiceImpl</servlet-class>
  </servlet>
  
  <servlet-mapping>
    <servlet-name>greetServlet</servlet-name>
    <url-pattern>/gwt_test1/greet</url-pattern>
  </servlet-mapping>
  
  <!-- Default page to serve -->
  <welcome-file-list>
    <welcome-file>GWT_Test1.html</welcome-file>
  </welcome-file-list>
 
  <servlet>
    <servlet-name>SystemServiceServlet</servlet-name>
    <servlet-class>com.google.api.server.spi.SystemServiceServlet</servlet-class>
    <init-param>
      <param-name>services</param-name>
      <param-value/>
    </init-param>
  </servlet>
 
  <servlet-mapping>
    <servlet-name>SystemServiceServlet</servlet-name>
    <url-pattern>/_ah/spi/*</url-pattern>
  </servlet-mapping>
 
</web-app>

Voilà les erreurs que je rencontre :

Code :

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[TRACE] [gwt_test1] - Finding entry point classes
	[ERROR] [gwt_test1] - Errors in 'file:/Q:/Apache%20Software%20Foundation/Tomcat%206.0/webapps/GWT_Test1/src/com/afkir/client/GWT_Test1.java'
		[ERROR] [gwt_test1] - Line 78: No source code is available for type com.afkir.model.User; did you forget to inherit a required module?
	[ERROR] [gwt_test1] - Errors in 'file:/Q:/Apache%20Software%20Foundation/Tomcat%206.0/webapps/GWT_Test1/src/com/afkir/client/UserServiceAsync.java'
		[ERROR] [gwt_test1] - Line 10: No source code is available for type com.afkir.model.User; did you forget to inherit a required module?
	[ERROR] [gwt_test1] - Unable to find type 'com.afkir.client.GWT_Test1'
		[ERROR] [gwt_test1] - Hint: Previous compiler errors may have made this type unavailable
		[ERROR] [gwt_test1] - Hint: Check the inheritance chain from your module; it may not be inheriting a required module or a module may not be adding its source path entries properly
[ERROR] [gwt_test1] - Failed to load module 'gwt_test1' from user agent 'Mozilla/5.0 (Windows NT 6.1; rv:18.0) Gecko/20100101 Firefox/18.0' at localhost127.0.0.1:6122

J'ai besoin de vos renseignements,

Merci bien d'avance.