Vaadin Spring 无法启动：依赖注入问题

Question

我正在使用 Vaadin 7、Spring Data JPA 1.9。4.RELEASE 和 Vaadin-Spring 1.0.0，我遇到了一些 DI 问题。

我选择不使用 Spring 引导，因为它会自动做太多我不能做的事情 "see" 而且我遇到了一些问题，花了我太多时间去理解和查找原因, 所以我更喜欢不开机。

我遇到的问题是 DI 在根 UI 上工作，但在根 UI.

的子 window 上不工作

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

尝试使用一些 Spring 注释来注释您的 PersonForm，例如 @Component。或者最好尝试使用来自 vaadin-spring @SpringView.

的注释

Vaadin Spring 无法启动：依赖注入问题

Vaadin Spring no boot : Dependency Injection issue

spring

vaadin

vaadin7

vaadin4spring