如何将新的 Vaadin Spring Boot 插件与 Vaadin4Spring EventBus 一起使用
How to use the new Vaadin Spring Boot addon together with Vaadin4Spring EventBus
Vaadin 团队目前发布了一个插件，据我所知，它基于非官方的 Vaadin4Spring 插件：
Vaadin Spring 引导：
https://vaadin.com/directory#addon/vaadin-spring-boot
Vaadin4Spring:
https://github.com/peholmst/vaadin4spring
Please note! As of February 2015, Vaadin is working on an official
Spring add-on which will be a small subset of Vaadin4Spring. Once the
official add-on is released, Vaadin4Spring will be converted into a
set of add-ons that provide features that the official add-on does not
have. You can follow the progress of the official add-on here:
https://github.com/vaadin/spring
然而，Vaadin Spring 引导缺少一些 Vaadin4Spring 具有的很酷的功能（如上面 Vaadin4Spring 的作者 Petter Holmström 所说），例如 EventBus框架，真的好用
现在我已经用 Vaadin Spring Boot 插件和 Vaadin4Spring 插件建立了一个 Maven 项目：
<!-- Vaadin Spring Boot -->
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-spring-boot</artifactId>
<version>${vaadin.spring.boot.version}</version>
</dependency>
基本上，我想使用这两个框架的功能（或者更好的是，我想使用 Vaadin Spring Boot 作为主要框架并同时使用 Vaadin4Spring EventBus 功能）。然而，我注意到的问题是，这两个框架似乎还不能共存。
如果我按上面的方式添加两个插件，当我 运行 应用程序时，没有发现任何视图，也没有找到 UIs（在显示我的意思的日志下方）：
2015-03-01 22:07:22.001... SpringViewProvider: Looking up VaadinViews
2015-03-01 22:07:22.006 WARN SpringViewProvider: No VaadinViews found ...
...
2015-03-01 22:12:12.584 INFO: Checking the application context for Vaadin UIs
2015-03-01 22:12:12.594 WARN: Found no Vaadin UIs in the application context
但是视图和 UI 确实存在！它们由 Vaadin Spring Boot 插件管理（这里是一些示例代码）：
UI:
@SpringUI("")
@Theme("valo")
public class DemoUI extends UI {
private static final long serialVersionUID = 193481619798227053L;
@Autowired
private Greeter greeter;
@Autowired
private ApplicationContext applicationContext;
private final SpringViewProvider viewProvider;
private VerticalLayout layout;
@Autowired
public DemoUI(SpringViewProvider viewProvider) {
this.viewProvider = viewProvider;
}
@Override
protected void init(VaadinRequest request) {
layout = new VerticalLayout();
layout.setMargin(true);
layout.setSpacing(true);
setContent(layout);
Label greetings = new Label(greeter.getGreeting());
layout.addComponent(greetings);
final CssLayout navigationBar = new CssLayout();
navigationBar.addStyleName(ValoTheme.LAYOUT_COMPONENT_GROUP);
navigationBar.addComponent(createNavigationButton("View Scoped View", ViewScopedView.VIEW_NAME));
navigationBar.addComponent(createNavigationButton("UI Scoped View", UIScopedView.VIEW_NAME));
navigationBar.addComponent(createNavigationButton("Another UI Scoped View", AnotherUIScopedView.VIEW_NAME));
layout.addComponent(navigationBar);
final Panel viewContainer = new Panel();
viewContainer.setSizeFull();
layout.addComponent(viewContainer);
layout.setExpandRatio(viewContainer, 1.0f);
Navigator navigator = new Navigator(this, viewContainer);
navigator.addProvider(viewProvider);
}
private Button createNavigationButton(String caption, String viewName) {
Button button = new Button(caption);
button.addStyleName(ValoTheme.BUTTON_SMALL);
button.addClickListener(event -> {
try {
getUI().getNavigator().navigateTo(viewName);
}
catch (IllegalArgumentException e) {
// view with the given name is not mapped
System.out.println("Not mapped view with name: " + viewName);
}
});
return button;
}
}
用@Spring注释的视图：
@SpringView(DefaultView.VIEW_NAME)
public class DefaultView extends VerticalLayout implements View {
private static final long serialVersionUID = -2052937117362922764L;
public static final String VIEW_NAME = "";
@Override
public void enter(ViewChangeEvent event) {
// the view is constructed in the init() method()
}
@PostConstruct
void init() {
addComponent(new Label("This is the default view"));
}
}
其他观点也是如此。当这两个依赖项从 pom.xml:
中删除时，一切正常
<!-- Vaadin4Spring addon, the EventBus framework needs this addon -->
<dependency>
<groupId>org.vaadin.spring</groupId>
<artifactId>spring-boot-vaadin</artifactId>
<version>0.0.5-SNAPSHOT</version>
</dependency>
<!-- Vaadin4Spring EventBus feature I would like to use with Vaadin Spring Boot -->
<dependency>
<groupId>org.vaadin.spring</groupId>
<artifactId>spring-vaadin-eventbus</artifactId>
<version>0.0.5-SNAPSHOT</version>
</dependency>
不允许我使用 EventBus 框架。有没有人也已经探索过新的插件并且有同样的需求？你知道如何整合这两个世界了吗？或者在 Vaadin Spring 引导中使用 Vaadin4Spring 工具还为时过早，我们应该等待 Vaadin4Spring 功能转换为一组插件，这将完成 Vaadin Spring Boot正如我发布的第一个区块所说？
编辑：我还尝试将 @ComponentScan 注释添加到 Spring 引导应用程序 class 同时将三个依赖项放在一起，但没有帮助...
如果我添加 spring-vaadin 而不是 spring-boot-vaadin:
<!-- Vaadin4Spring -->
<dependency>
<groupId>org.vaadin.spring</groupId>
<artifactId>spring-vaadin</artifactId>
<version>${vaadin4spring.version}</version>
</dependency>
<!-- Vaadin4Spring EventBus framework -->
<dependency>
<groupId>org.vaadin.spring</groupId>
<artifactId>spring-vaadin-eventbus</artifactId>
<version>${vaadin4spring.version}</version>
</dependency>
视图和 UIs 已加载，我可以在浏览器中看到它们，但是一旦我想开始使用事件总线，我就会收到以下异常：
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'vaadinSpringBootDemoApplication': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.vaadin.spring.events.EventBus$ApplicationEventBus demo.VaadinSpringBootDemoApplication.applicationEventBus; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.vaadin.spring.events.EventBus$ApplicationEventBus] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1202)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory.getObject(AbstractBeanFactory.java:303)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:762)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:691)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:321)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:961)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:950)
at demo.VaadinSpringBootDemoApplication.main(VaadinSpringBootDemoApplication.java:21)
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.vaadin.spring.events.EventBus$ApplicationEventBus demo.VaadinSpringBootDemoApplication.applicationEventBus; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.vaadin.spring.events.EventBus$ApplicationEventBus] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:561)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
... 16 common frames omitted
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.vaadin.spring.events.EventBus$ApplicationEventBus] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1308)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1054)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:949)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:533)
... 18 common frames omitted
似乎 EventBus.* bean 没有在 Spring IoC 容器中注册。怎么办？
我认为你可以两者兼得。尝试包括 "org.vaadin.spring:spring-vaadin:0.0.5-SNAPSHOT" 因为 VaadinEventbusConfiguration 依赖于内部 类.
为什么需要包含 "org.vaadin.spring:spring-boot-vaadin:0.0.5-SNAPSHOT"？如果您确实需要它，请尝试从 @EnableAutoConfiguration.
中排除 org.vaadin.spring.boot.VaadinAutoConfiguration
编辑：
您可以在此分支中使用官方 spring4vaadin 获取插件：
https://github.com/peholmst/vaadin4spring/tree/feature/official_spring_support
问题是官方spring4vaadin中还没有实现VaadinSessionScope。您需要通过非官方的 spring4vaadin 创建该 bean。
您的 pom 文件：
<!-- Official Vaadin4Spring -->
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-spring</artifactId>
<version>${vaadin.spring.version}</version>
</dependency>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-spring-boot</artifactId>
<version>${vaadin.spring.boot.version}</version>
</dependency>
<!-- Unofficial Vaadin4Spring -->
<dependency>
<groupId>org.vaadin.spring</groupId>
<artifactId>spring-vaadin</artifactId>
<version>${vaadin4spring.version}</version>
</dependency>
<!-- Vaadin4Spring EventBus Addon -->
<dependency>
<groupId>org.vaadin.spring</groupId>
<artifactId>spring-vaadin-eventbus</artifactId>
<version>${vaadin4spring.version}</version>
</dependency>
UI 示例：
@SpringUI("/ui")
@Title("Test")
@Theme("valo")
public class MainUI extends UI {
private final Logger log = LoggerFactory.getLogger(MainUI.class);
@Inject
EventBus.UIEventBus eventBus;
@Override
protected void init(VaadinRequest request) {
eventBus.subscribe(this);
setContent(new Button("Create event", (e) -> {
eventBus.publish(EventScope.UI, "Payload string.");
}));
}
@EventBusListenerMethod
public void onEvent(String str) {
log.debug("Event received: {}", str);
}
}
主应用程序class
@Configuration
@ComponentScan
@EnableAutoConfiguration
@EnableVaadinEventBus
public class Application {
private static final Logger log = LoggerFactory.getLogger(Application.class);
@Bean
static VaadinSessionScope vaadinSessionScope() {
return new VaadinSessionScope();
}
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
作为已接受答案的更新：非官方 vaadin4spring 附加组件的模块已重命名。现在必须添加此依赖项：
<dependency>
<groupId>org.vaadin.spring.extensions</groupId>
<artifactId>vaadin-spring-ext-core</artifactId>
<version>${vaadin4spring.version}</version>
</dependency>
Vaadin 团队目前发布了一个插件，据我所知，它基于非官方的 Vaadin4Spring 插件：
Vaadin Spring 引导： https://vaadin.com/directory#addon/vaadin-spring-boot
Vaadin4Spring: https://github.com/peholmst/vaadin4spring
Please note! As of February 2015, Vaadin is working on an official Spring add-on which will be a small subset of Vaadin4Spring. Once the official add-on is released, Vaadin4Spring will be converted into a set of add-ons that provide features that the official add-on does not have. You can follow the progress of the official add-on here: https://github.com/vaadin/spring
然而，Vaadin Spring 引导缺少一些 Vaadin4Spring 具有的很酷的功能（如上面 Vaadin4Spring 的作者 Petter Holmström 所说），例如 EventBus框架，真的好用
现在我已经用 Vaadin Spring Boot 插件和 Vaadin4Spring 插件建立了一个 Maven 项目：
<!-- Vaadin Spring Boot -->
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-spring-boot</artifactId>
<version>${vaadin.spring.boot.version}</version>
</dependency>
基本上，我想使用这两个框架的功能（或者更好的是，我想使用 Vaadin Spring Boot 作为主要框架并同时使用 Vaadin4Spring EventBus 功能）。然而，我注意到的问题是，这两个框架似乎还不能共存。
如果我按上面的方式添加两个插件，当我 运行 应用程序时，没有发现任何视图，也没有找到 UIs（在显示我的意思的日志下方）：
2015-03-01 22:07:22.001... SpringViewProvider: Looking up VaadinViews
2015-03-01 22:07:22.006 WARN SpringViewProvider: No VaadinViews found ...
...
2015-03-01 22:12:12.584 INFO: Checking the application context for Vaadin UIs
2015-03-01 22:12:12.594 WARN: Found no Vaadin UIs in the application context
但是视图和 UI 确实存在！它们由 Vaadin Spring Boot 插件管理（这里是一些示例代码）：
UI:
@SpringUI("")
@Theme("valo")
public class DemoUI extends UI {
private static final long serialVersionUID = 193481619798227053L;
@Autowired
private Greeter greeter;
@Autowired
private ApplicationContext applicationContext;
private final SpringViewProvider viewProvider;
private VerticalLayout layout;
@Autowired
public DemoUI(SpringViewProvider viewProvider) {
this.viewProvider = viewProvider;
}
@Override
protected void init(VaadinRequest request) {
layout = new VerticalLayout();
layout.setMargin(true);
layout.setSpacing(true);
setContent(layout);
Label greetings = new Label(greeter.getGreeting());
layout.addComponent(greetings);
final CssLayout navigationBar = new CssLayout();
navigationBar.addStyleName(ValoTheme.LAYOUT_COMPONENT_GROUP);
navigationBar.addComponent(createNavigationButton("View Scoped View", ViewScopedView.VIEW_NAME));
navigationBar.addComponent(createNavigationButton("UI Scoped View", UIScopedView.VIEW_NAME));
navigationBar.addComponent(createNavigationButton("Another UI Scoped View", AnotherUIScopedView.VIEW_NAME));
layout.addComponent(navigationBar);
final Panel viewContainer = new Panel();
viewContainer.setSizeFull();
layout.addComponent(viewContainer);
layout.setExpandRatio(viewContainer, 1.0f);
Navigator navigator = new Navigator(this, viewContainer);
navigator.addProvider(viewProvider);
}
private Button createNavigationButton(String caption, String viewName) {
Button button = new Button(caption);
button.addStyleName(ValoTheme.BUTTON_SMALL);
button.addClickListener(event -> {
try {
getUI().getNavigator().navigateTo(viewName);
}
catch (IllegalArgumentException e) {
// view with the given name is not mapped
System.out.println("Not mapped view with name: " + viewName);
}
});
return button;
}
}
用@Spring注释的视图：
@SpringView(DefaultView.VIEW_NAME)
public class DefaultView extends VerticalLayout implements View {
private static final long serialVersionUID = -2052937117362922764L;
public static final String VIEW_NAME = "";
@Override
public void enter(ViewChangeEvent event) {
// the view is constructed in the init() method()
}
@PostConstruct
void init() {
addComponent(new Label("This is the default view"));
}
}
其他观点也是如此。当这两个依赖项从 pom.xml:
中删除时，一切正常 <!-- Vaadin4Spring addon, the EventBus framework needs this addon -->
<dependency>
<groupId>org.vaadin.spring</groupId>
<artifactId>spring-boot-vaadin</artifactId>
<version>0.0.5-SNAPSHOT</version>
</dependency>
<!-- Vaadin4Spring EventBus feature I would like to use with Vaadin Spring Boot -->
<dependency>
<groupId>org.vaadin.spring</groupId>
<artifactId>spring-vaadin-eventbus</artifactId>
<version>0.0.5-SNAPSHOT</version>
</dependency>
不允许我使用 EventBus 框架。有没有人也已经探索过新的插件并且有同样的需求？你知道如何整合这两个世界了吗？或者在 Vaadin Spring 引导中使用 Vaadin4Spring 工具还为时过早，我们应该等待 Vaadin4Spring 功能转换为一组插件，这将完成 Vaadin Spring Boot正如我发布的第一个区块所说？
编辑：我还尝试将 @ComponentScan 注释添加到 Spring 引导应用程序 class 同时将三个依赖项放在一起，但没有帮助...
如果我添加 spring-vaadin 而不是 spring-boot-vaadin:
<!-- Vaadin4Spring -->
<dependency>
<groupId>org.vaadin.spring</groupId>
<artifactId>spring-vaadin</artifactId>
<version>${vaadin4spring.version}</version>
</dependency>
<!-- Vaadin4Spring EventBus framework -->
<dependency>
<groupId>org.vaadin.spring</groupId>
<artifactId>spring-vaadin-eventbus</artifactId>
<version>${vaadin4spring.version}</version>
</dependency>
视图和 UIs 已加载，我可以在浏览器中看到它们，但是一旦我想开始使用事件总线，我就会收到以下异常：
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'vaadinSpringBootDemoApplication': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.vaadin.spring.events.EventBus$ApplicationEventBus demo.VaadinSpringBootDemoApplication.applicationEventBus; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.vaadin.spring.events.EventBus$ApplicationEventBus] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1202)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory.getObject(AbstractBeanFactory.java:303)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:762)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:691)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:321)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:961)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:950)
at demo.VaadinSpringBootDemoApplication.main(VaadinSpringBootDemoApplication.java:21)
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.vaadin.spring.events.EventBus$ApplicationEventBus demo.VaadinSpringBootDemoApplication.applicationEventBus; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.vaadin.spring.events.EventBus$ApplicationEventBus] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:561)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
... 16 common frames omitted
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.vaadin.spring.events.EventBus$ApplicationEventBus] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1308)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1054)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:949)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:533)
... 18 common frames omitted
似乎 EventBus.* bean 没有在 Spring IoC 容器中注册。怎么办？
我认为你可以两者兼得。尝试包括 "org.vaadin.spring:spring-vaadin:0.0.5-SNAPSHOT" 因为 VaadinEventbusConfiguration 依赖于内部 类.
为什么需要包含 "org.vaadin.spring:spring-boot-vaadin:0.0.5-SNAPSHOT"？如果您确实需要它，请尝试从 @EnableAutoConfiguration.
org.vaadin.spring.boot.VaadinAutoConfiguration
编辑： 您可以在此分支中使用官方 spring4vaadin 获取插件： https://github.com/peholmst/vaadin4spring/tree/feature/official_spring_support
问题是官方spring4vaadin中还没有实现VaadinSessionScope。您需要通过非官方的 spring4vaadin 创建该 bean。
您的 pom 文件：
<!-- Official Vaadin4Spring -->
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-spring</artifactId>
<version>${vaadin.spring.version}</version>
</dependency>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-spring-boot</artifactId>
<version>${vaadin.spring.boot.version}</version>
</dependency>
<!-- Unofficial Vaadin4Spring -->
<dependency>
<groupId>org.vaadin.spring</groupId>
<artifactId>spring-vaadin</artifactId>
<version>${vaadin4spring.version}</version>
</dependency>
<!-- Vaadin4Spring EventBus Addon -->
<dependency>
<groupId>org.vaadin.spring</groupId>
<artifactId>spring-vaadin-eventbus</artifactId>
<version>${vaadin4spring.version}</version>
</dependency>
UI 示例：
@SpringUI("/ui")
@Title("Test")
@Theme("valo")
public class MainUI extends UI {
private final Logger log = LoggerFactory.getLogger(MainUI.class);
@Inject
EventBus.UIEventBus eventBus;
@Override
protected void init(VaadinRequest request) {
eventBus.subscribe(this);
setContent(new Button("Create event", (e) -> {
eventBus.publish(EventScope.UI, "Payload string.");
}));
}
@EventBusListenerMethod
public void onEvent(String str) {
log.debug("Event received: {}", str);
}
}
主应用程序class
@Configuration
@ComponentScan
@EnableAutoConfiguration
@EnableVaadinEventBus
public class Application {
private static final Logger log = LoggerFactory.getLogger(Application.class);
@Bean
static VaadinSessionScope vaadinSessionScope() {
return new VaadinSessionScope();
}
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
作为已接受答案的更新：非官方 vaadin4spring 附加组件的模块已重命名。现在必须添加此依赖项：
<dependency>
<groupId>org.vaadin.spring.extensions</groupId>
<artifactId>vaadin-spring-ext-core</artifactId>
<version>${vaadin4spring.version}</version>
</dependency>