未添加UIProvider，並且彈簧集成後沒有「UI」初始參數Vaadin錯誤

Question

我已收到沒有添加UIProvider，並且在Vaadin Framework中嘗試依賴注入後沒有「UI」初始化參數錯誤。我用了專用的Vaadin Spring Addon。我還將VaadinServlet更改爲SpringVaadinServlet，但仍然無效。

還有就是我的MainView：

@Theme("mytheme") 
@SpringUI 
@ComponentScan 
@Widgetset("net.elenx.MyAppWidgetset") 
public class MainView extends UI { 

    @Autowired 
    private VerticalLayout template; 

    @Override 
    protected void init(VaadinRequest vaadinRequest) { 
     new AnnotationConfigApplicationContext(SpringConfig.class); 
     this.setContent(template); 
    } 

    @WebServlet(urlPatterns = "/*", name = "MyUIServlet", asyncSupported = true) 
    @VaadinServletConfiguration(ui = MainView.class, productionMode = false) 
    public static class MyUIServlet extends SpringVaadinServlet { 
    } 

} 

導航欄

@Configuration 
@EnableVaadin 
public class NavigationBar { 

    @Bean 
    HorizontalLayout navigationBar(Button hamburgerButton, Label elenxLogo) { 
     System.out.println("Hello from NavigationBar bean!"); 
     HorizontalLayout navbar = new HorizontalLayout(); 
     navbar.setWidth("100%"); 
     navbar.setMargin(true); 
     navbar.setHeight(50, Sizeable.Unit.PIXELS); 
     navbar.addComponent(hamburgerButton); 
     navbar.addComponent(elenxLogo); 
     navbar.addStyleName("navigation-bar"); 
     return navbar; 
    } 

    @Bean 
    Button hamburgerButton() { 
     Button hamburgerButton = new Button(); 
     hamburgerButton.addStyleName("hamburger-button"); 
     hamburgerButton.setIcon(VaadinIcons.MENU); 
     return hamburgerButton; 
    } 

    @Bean 
    Label elenxLogo() { 
     Label logo = new Label("ElenX"); 
     logo.addStyleName("elenx-logo"); 
     logo.setWidthUndefined(); 
     logo.setEnabled(false); 
     return logo; 
    } 
} 

SpringConfig

@Configuration 
@EnableVaadin 
@Import(NavigationBar.class) 
public class SpringConfig { 

    //Create whole view of MainView 
    @Bean 
    VerticalLayout template(HorizontalLayout navigationBar) { 
     System.out.println("Hello from template bean!"); 
     VerticalLayout template = new VerticalLayout(); 
     //NavigationBar navigationBar = new NavigationBar(); 
     Sidebar sidebar = new Sidebar(); 
     template.setMargin(false); 
     template.setSpacing(false); 
     template.setHeight("100%"); 
     template.addComponent(navigationBar); 
     template.addComponent(sidebar.getSidebar()); 
     template.setExpandRatio(sidebar.getSidebar(), 1.0f); 
     return template; 
    } 
} 

什麼是錯的代碼？我不知道發生了什麼事。

Answer 1

雖然這是一個老問題。

您是否按照Spring Boot http://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#howto-create-a-deployable-war-file的說明來製作可展開的戰爭？

你的春天引導應用程序類需要擴展SpringBootServletInitializer

@SpringBootApplication 
public class Application extends SpringBootServletInitializer { 

    @Override 
    protected SpringApplicationBuilder configure (SpringApplicationBuilder application) { 
     return application.sources (Application.class); 
    } 

    public static void main (String [] args) { 
     SpringApplication.run (Application.class, args); 
    } 
} 

您也可以檢出在github以下項目。

春天引導和Vaadin

Vaadin 7 https://github.com/mike-goetz/spring-boot-vaadin7

Vaadin 8 https://github.com/mike-goetz/spring-boot-vaadin