Issue
Following this tutorial I'm trying to setup a Maven
project with Spring-boot
and Vaadin
.
I'm getting SpringUI cannot be resolved to a type
error on the @SpringUI
annotation.
pom.xml:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.4.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<vaadin.version>8.0.5</vaadin.version>
</properties>
<dependencies>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-bom</artifactId>
<version>${vaadin.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
DemoApplication.java:
package com.example.demo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
}
TodoUI.java:
package com.example.demo;
import com.vaadin.server.VaadinRequest;
import com.vaadin.ui.UI;
import com.vaadin.spring.annotation.SpringUI;
@SpringUI(path = "/myPath") // SpringUI cannot be resolved to a type | WHY?
public class TodoUI extends UI {
private static final long serialVersionUID = -1463774427806228298L;
@Override
protected void init(VaadinRequest request) {
}
}
What am I doing wrong here?
Solution
I have checked your source code, and everything looks fine, so possible some configurations errors or something like that.
But, to get working project, you can download from video ready project on github: https://github.com/vaadin-marcus/spring-boot-todo and import it. And can compare, where is your error.
Answered By - Yaroslav Boichuk
Answer Checked By - David Marino (JavaFixing Volunteer)