I've a very strange behavior, I think I have two issues, I put them together on the same post because they can be linked :
my code is :
VaadinSession.getCurrent().setAttribute("user", user);
System.out.println("User :"+ user);
getUI().getNavigator().navigateTo(HomePageView.HOMEPAGE);
1. First issue
I'm on the login page, I can see my user information, but I cannot navigate to the homepage. I don't have any error !
If I delete the line with the vaadinSession, the navigator is working...
2. Second Issue
I tried to debug my code but I received a "source not found", to fix that, I follow Eclipse java debugging: source not found. But, seems to working for me. What I did :
EDIT : SOLUTION for the issue 2 : I was so blocked... I know it's an eclipse issue (configuration or something like that). I changed for IntelliJ. This IDE show me sources without problem.
INFO
I'm using Vaadin and REST web services (with the javax.ws.rs.client.ClientBuilder). When I use SYSOUT, I have the good information. I received the information from the homepage (instead of the view seems to keep the login view).
Any hint will be very useful !
EDIT : Full LoginView class
package com.test.project.View;
import com.test.project.model.User;
import com.test.project.restclient.RestClient;
import com.vaadin.annotations.Title;
import com.vaadin.data.Binder;
import com.vaadin.data.validator.EmailValidator;
import com.vaadin.icons.VaadinIcons;
import com.vaadin.navigator.View;
import com.vaadin.navigator.ViewChangeListener.ViewChangeEvent;
import com.vaadin.server.VaadinSession;
import com.vaadin.ui.Alignment;
import com.vaadin.ui.Button;
import com.vaadin.ui.CustomComponent;
import com.vaadin.ui.Panel;
import com.vaadin.ui.TextField;
import com.vaadin.ui.VerticalLayout;
/**
* Login View. The user should enter his email address. Extends {@link CustomComponent} and implements {@link View}
*
* @author Bob
*/
@Title("Sign Up")
public class LoginView extends CustomComponent implements
View {
private static final long serialVersionUID = 1L;
public static final String LOGIN = "";
private VerticalLayout vLayout = new VerticalLayout();
private static final String SIGNUP_LABEL = "Sign Up";
private static final String EMAIL_CAPTION = "Type your email here :";
private static final String SIGNIN_LABEL = "Sign In";
private TextField email;
private static final String TOKEN_ATTRIBUTE_LABEL = "token";
private final Binder<User> binder = new Binder<>();
private User user;
private Button loginButton;
/**
* Login view Constructor
*/
public LoginView() {
createLoginPanel();
addListener();
}
/**
* Add Listener concern by the Login View Fields
*/
private void addListener() {
loginButton.addClickListener(e -> {
RestClient rc = new RestClient();
user = rc.getUserInfo(email.getValue());
VaadinSession.getCurrent().setAttribute(TOKEN_ATTRIBUTE_LABEL, user.getToken());
System.out.println();
getUI().getNavigator().navigateTo(HomePageView.HOMEPAGE);
});
}
/**
* Create the login panel with the email field and the login button
*/
private void createLoginPanel() {
final VerticalLayout layout = new VerticalLayout();
layout.setSizeFull();
Panel panel = new Panel(SIGNUP_LABEL);
panel.setHeight(200, Unit.PIXELS);
panel.setWidth(300, Unit.PIXELS);
email = new TextField();
email.setCaption(EMAIL_CAPTION);
email.setHeight(30, Unit.PIXELS);
email.setWidth(275, Unit.PIXELS);
binder.forField(email).withValidator(new EmailValidator("This doesn't look like a valid email address")).bind(User::getEmail, User::setEmail);
loginButton = new Button(SIGNIN_LABEL);
loginButton.setIcon(VaadinIcons.SIGN_IN);
layout.addComponents(email, loginButton);
layout.setComponentAlignment(loginButton, Alignment.BOTTOM_RIGHT);
panel.setContent(layout);
vLayout.addComponent(panel);
vLayout.setSizeFull();
vLayout.setComponentAlignment(panel, Alignment.MIDDLE_CENTER);
setCompositionRoot(vLayout);
}
/* (non-Javadoc)
* @see com.vaadin.navigator.View#enter(com.vaadin.navigator.ViewChangeListener.ViewChangeEvent)
*/
@Override
public void enter(ViewChangeEvent event) {
email.focus();
}
}
Rest client class :
package com.test.project.restclient;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.client.Entity;
import javax.ws.rs.client.WebTarget;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import org.glassfish.jersey.client.ClientConfig;
import org.json.simple.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.gson.Gson;
import com.test.project.model.User;
/**
* Class contain the Rest Client which allow to use and call the rest web services.
*
* @author Bob
*/
public class RestClient {
private static final String EMAIL_LABEL = "email";
private static final Logger LOG = LoggerFactory.getLogger(RestClient.class);
private Client client;
public RestClient() {
client = ClientBuilder.newClient(new ClientConfig());
}
/**
* Get the user information from the user email
*
* @param email
* @return user
*/
@SuppressWarnings("unchecked")
@POST
@Path("http://IpAddress:8080/api/authentication/")
public User getUserInfo(String email) {
JSONObject obj = new JSONObject();
obj.put(EMAIL_LABEL, email);
WebTarget webtarget = client.target("http://IpAddress:8080/api/authentication/");
Response response = webtarget.request().accept(MediaType.APPLICATION_JSON).post(Entity.entity(obj, MediaType.APPLICATION_JSON));
String answer = response.readEntity(String.class);
LOG.info("User information are :" + answer);
Gson g = new Gson();
User user = g.fromJson(answer, User.class);
return user;
}
}
Home Page View :
package com.test.project.View;
import com.test.project.model.Action;
import com.test.project.restclient.RestClient;
import com.vaadin.data.Binder;
import com.vaadin.icons.VaadinIcons;
import com.vaadin.navigator.View;
import com.vaadin.navigator.ViewChangeListener.ViewChangeEvent;
import com.vaadin.server.VaadinSession;
import com.vaadin.ui.Button;
import com.vaadin.ui.ComboBox;
import com.vaadin.ui.CustomComponent;
import com.vaadin.ui.MenuBar;
import com.vaadin.ui.TextField;
import com.vaadin.ui.VerticalLayout;
/**
* Home page view.
*
* @author Bob
*/
public class HomePageView extends CustomComponent implements
View {
private static final long serialVersionUID = 1L;
public static final String HOMEPAGE = "home";
private final VerticalLayout layout;
private static final String TOKEN_ATTRIBUTE_LABEL = "token";
/**
* Home page View constructor
*/
public HomePageView() {
layout = new VerticalLayout();
layout.setSizeFull();
String CURRENT_USER_TOKEN = (String) VaadinSession.getCurrent().getAttribute(TOKEN_ATTRIBUTE_LABEL);
System.out.println("Current user token : " + CURRENT_USER_TOKEN);
createMenu();
setCompositionRoot(layout);
}
/**
* Create a Vertical Menu with the Home page and Actions page
*/
private void createMenu() {
MenuBar barmenu = new MenuBar();
barmenu.addItem("Homepage", VaadinIcons.HOME, null);
barmenu.addItem("Actions", VaadinIcons.TABLE, null);
layout.addComponent(barmenu);
}
/* (non-Javadoc)
* @see com.vaadin.navigator.View#enter(com.vaadin.navigator.ViewChangeListener.ViewChangeEvent)
*/
@Override
public void enter(ViewChangeEvent event) {
}
}
Ok, I found the solution/workarround for the issues :
For the first issue : "token" seems to be a reserved word, "tokenEmployee" seems to be better and it's working perfectly...
For the second issue : I still don't know why it's not working in Eclipse, I've the source but in debug mode, I'm not able to see them. I changed for IntelliJ. I was not able to find any thing about reserved words for the Vaadin Session. If someone find a link or something, I'm very interested !
Too much time trying to fix it..
A bit thanks to @jay who tried to help me!