Vaadin Spring no boot : Dependency Injection issue - spring

Question

I'm using Vaadin 7, Spring Data JPA 1.9.4.RELEASE, and Vaadin-Spring 1.0.0 and I have some DI problemes.
I choose not to use Spring Boot because it will automatically do too many things that I cannot "see" and I have encountered some problemes that spent me too much time to understand and find the reason, so I prefer no boot.
The probleme that I encounter is that DI works at a root UI but not for a sub-window of the root UI.
RootUI.java
#SpringUI(path = "/")
public class RootUI extends UI {
#Autowired
private EntityManagerFactory entityManagerFactory; // this one works, but I cannot get EntityManager directly
#Autowired
private ClassService classService; // this one works
#Override
protected void init(VaadinRequest request) {
...
PersonForm form = new PersonForm();
CssLayout layout = new CssLayout();
layout.addComponent(form);
Window subWindow = new Window();
subWindow.setContent(layout);
...
}
}
PersonForm.java
public class PersonForm {
#Autowired
private ClassService classService; // this doesnot work,
public PersonForm(ClassService classService) {
classService.findByName();// since the #Autowired dosenot work, I have to pass the one from rootUI.
}
init() {
classService.findByName(); // null exception
}
}
DBConfig.java
#Configuration
#EnableVaadin
#EnableJpaRepositories(basePackages = {"com.example.person.repository"})
#EnableTransactionManagement
public class DBConfig {
#Bean
public DataSource dataSource() {
HikariConfig config = new HikariConfig();
config.setDriverClassName("com.mysql.jdbc.Driver");
config.setJdbcUrl("jdbc:mysql://localhost:3306/test?autoReconnect=true&useSSL=false");
config.setUsername("root");
config.setPassword("root");
config.setMaximumPoolSize(20);
HikariDataSource dataSource = new HikariDataSource(config);
return dataSource;
}
#Bean
public EntityManagerFactory entityManagerFactory() {
HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
vendorAdapter.setGenerateDdl(true);
LocalContainerEntityManagerFactoryBean factory = new LocalContainerEntityManagerFactoryBean();
factory.setJpaVendorAdapter(vendorAdapter);
factory.setDataSource(dataSource());
factory.setPackagesToScan("com.example.person");
factory.setPersistenceProviderClass(HibernatePersistenceProvider.class);
Properties jpaProperties = new Properties();
jpaProperties.put("hibernate.dialect", "org.hibernate.dialect.MySQLInnoDBDialect");
jpaProperties.put("hibernate.hbm2ddl.auto", "update");
factory.setJpaProperties(jpaProperties);
factory.afterPropertiesSet();
return factory.getObject();
}
}

Answer 1

Try to annotate your PersonForm with some Spring annotation like #Component. Or maybe better try to use annotation from vaadin-spring #SpringView.