vaadin / tutorial

Introduction to Vaadin

Vaadin 24.4 tutorial application

This repository contains the starter project and example solutions for the Vaadin 24.4 tutorial application.

The Vaadin 8 tutorial application can be found in the old master branch.

tutorial's Issues

Exception Unable to find design file CustomerFormDesign.html in my.vaadin.app

Fixing typo mistake and renaming java/my/vaaadin/app to java/my/vaadin/app introduced exception when running app:

com.vaadin.ui.declarative.DesignException: Unable to find design file CustomerFormDesign.html in my.vaadin.app

It happens because resources/my/vaaadin/app wasn't renamed to resources/my/vaadin/app.

And MyUI.java need to fix typo in Widgetset refernce too
-@WidgetSet("my.vaaadin.app.MyAppWidgetset")
+@WidgetSet("my.vaadin.app.MyAppWidgetset")

Vaadin URL mapping issues: sub-path URL mapping and automatic URL mapping not working

Hi there,

Not sure if I can post this here. Please feel free to close/delete.

Facing these issue w.r.t Vaadin UI and URL mapping.

Problem1:

I am trying to use Vaadin for basic CRUD operations for my Entities. To start with, I would like to expose a UI class to /subpath/xyz url. But the sub-path url mapping is somehow not working. (Please note that when I keep or remove @spring(path="myui") it still maps to localhost:8080/myui/ and not localhost:8080/subpath/myui/

What am I missing?

I have been following Vaadin's documentation but no luck so far.
https://vaadin.com/docs/-/part/framework/application/application-environment.html#application.environment.servlet-mapping

Problem2:
Also, Vaadin is not generating url mappings automatically from the class name. E.g. MyUI classname should be mapped to localhost:8080/my-ui/ if I do not give path attribute in @springui( as per Vaadin's documents).

import com.vaadin.annotations.Theme;
import com.vaadin.annotations.Title;
import com.vaadin.annotations.VaadinServletConfiguration;
import com.vaadin.server.VaadinRequest;
import com.vaadin.spring.annotation.SpringUI;
import com.vaadin.spring.server.SpringVaadinServlet;
import com.vaadin.ui.*;

import javax.servlet.annotation.WebServlet;

@theme("valo")
@title("My UI")
@springui(path="myui")
public class MyUI extends UI {
@OverRide
protected void init(VaadinRequest request) {
// Create the content root layout for the UI
VerticalLayout content = new VerticalLayout();
setContent(content);

	// Display the greeting
	content.addComponent(new Label("Hello World!"));

	// Have a clickable button
	content.addComponent(new Button("Click Me!",
		click -> Notification.show("Clicked!")));
}
@WebServlet(urlPatterns = {"/admin/*", "/VAADIN/*"}, name = "MyUIServlet", asyncSupported = true)
@VaadinServletConfiguration(ui = MyUI.class, productionMode = false)
public static class MyUIServlet extends SpringVaadinServlet {
}

}

Vaadin 7 or 8 ?

Hello Alejandro,

https://www.useloom.com/share/00d0efd5f9a048d5a86bc4fb1629a432

I have spent the last week viewing your wonderful Vaadin 7 tutorial:
https://vaadin.com/docs7/-/part7/framework/tutorial.html

Is the information here on Github for Vaadin 7 or Vaadin 8?

As I was not able to get the beginning tutorial to work in Vaadin 7, so I am hoping to try again today, following the instructions that are given here on Github -- by downloading the source and hope I can successfully complete the beginners tutorial.

Thank you.

https://vaadin.com/forum#!/thread/15496153

Jon

Outdated: tutorial is based on Vaadin 8 instead of Vaadin 14

This tutorial is official referenced on https://vaadin.com/learn/tutorials/getting-started-with-flow/setting-up-the-project. So I expected it to be up-to-date. It's a pity that it does not compile out of the box with Vaadin 14. Could someone please update the tutorial?