dispatcherServletRegistration Spring 启动异常

Question

请帮忙，我尝试将 Vaadin 放在我的（Spring boot）服务器上，在我设置了一个简单的示例后，我收到以下错误：

无法注册在类路径资源 [com/vaadin/flow/spring/SpringBootAutoConfiguration.class] 中定义的 bean 'dispatcherServletRegistration'。已在类路径资源 [org/springframework/boot/autoconfigure/web/servlet/DispatcherServletAutoConfiguration$DispatcherServletRegistrationConfiguration.class] 中定义了具有该名称的 bean，并且已禁用覆盖。

然后，为了纠正错误，我在 application.prop 中编写： spring.main.allow-bean-definition-overriding=true

并得到以下错误：

org.springframework.boot.autoconfigure.web.servlet.error.ErrorMvcAutoConfiguration 中构造函数的参数 1 需要一个找不到的 'org.springframework.boot.autoconfigure.web.servlet.DispatcherServletPath' 类型的 bean。

POM.XML：

<?xml version="1.0" encoding="UTF-8"?>

http://maven.apache.org/xsd/maven-4.0.0.xsd"> 4.0.0 com.lopamoko 云液体 0.0.1-快照 罐子

<name>cloudliquid</name>
<description>Demo project for Spring Boot</description>

<pluginRepositories>
    <pluginRepository>
        <id>maven-annotation-plugin-repo</id>
        <url>http://maven-annotation-plugin.googlecode.com/svn/trunk/mavenrepo</url>
    </pluginRepository>
</pluginRepositories>


<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.1.0.RELEASE</version>

    <relativePath/> <!-- lookup parent from com.lopamoko.cloudliquid.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>
</properties>

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter</artifactId>
    </dependency>
    <dependency>
        <groupId>ru.leon0399</groupId>
        <artifactId>dadata</artifactId>
        <version>0.8.0</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-rest</artifactId>
    </dependency>
    <dependency>
        <groupId>io.github.openfeign</groupId>
        <artifactId>feign-okhttp</artifactId>
        <version>9.3.1</version>
    </dependency>
    <dependency>
        <groupId>io.github.openfeign</groupId>
        <artifactId>feign-gson</artifactId>
        <version>9.3.1</version>
    </dependency>
    <dependency>
        <groupId>io.github.openfeign</groupId>
        <artifactId>feign-slf4j</artifactId>
        <version>9.3.1</version>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.dataformat</groupId>
        <artifactId>jackson-dataformat-xml</artifactId>
    </dependency>
    <dependency>
        <groupId>commons-codec</groupId>
        <artifactId>commons-codec</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-data-jpa</artifactId>
        <version>2.1.1.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-mail</artifactId>
        <version>2.0.1.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>io.sentry</groupId>
        <artifactId>sentry</artifactId>
        <version>1.7.16</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <version>1.18.0</version>
        <scope>provided</scope>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot</artifactId>
        <version>2.1.0.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.modelmapper</groupId>
        <artifactId>modelmapper</artifactId>
        <version>0.7.4</version>
    </dependency>
    <dependency>
        <groupId>org.postgresql</groupId>
        <artifactId>postgresql</artifactId>
        <version>42.2.5</version>
    </dependency>
    <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpclient</artifactId>
        <version>4.5.6</version>
    </dependency>
    <dependency>
        <groupId>com.google.firebase</groupId>
        <artifactId>firebase-admin</artifactId>
        <version>6.6.0</version>
    </dependency>
    <dependency>
        <groupId>com.vaadin</groupId>
        <artifactId>vaadin-spring-boot-starter</artifactId>
    </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>

它是我的主要应用程序：

@SpringBootApplication()
@EntityScan("com/lopamoko/cloudliquid/dataModel")
@EnableJpaRepositories(basePackages =    "com.lopamoko.cloudliquid.repository")
public class CloudliquidApplication extends SpringBootServletInitializer {

public static void main(String[] args) {
    ApplicationContext ctx = SpringApplication.run(CloudliquidApplication.class, args);
    System.out.println("Let's inspect the beans provided by Spring Boot:");

    String[] beanNames = ctx.getBeanDefinitionNames();
    Arrays.sort(beanNames);
    for (String beanName : beanNames) {
        System.out.println(beanName);
    }
    FirebaseConfig firebaseConfig = new FirebaseConfig();
    firebaseConfig.configurateFirebaseApplication();

}


@Bean
public DadataService dadataService() {
    return new DadataServiceImpl();
}

@Bean
public DadataClient dadataClient() {
    return Feign.builder()
            .client(new OkHttpClient())
            .encoder(new GsonEncoder())
            .decoder(new GsonDecoder())
            .logger(new Slf4jLogger(DadataClient.class))
            .logLevel(Logger.Level.FULL)
            .target(DadataClient.class, "https://suggestions.dadata.ru/suggestions/api/4_1/rs/suggest/address");
}

@Bean
public CustomerDeliveryService customerDeliveryService() {
    return new CustomerDeliveryServiceImpl();
}

@Bean
public OrderService orderService() {
    return new OrderServiceImpl();
}

@Bean
public YandexService yandexService() {
    return new YandexServiceImpl();
}

@Bean
public CategoryService categoryService() {
    return new CategoryServiceImpl();
}

@Bean
public ShopService shopService() {
    return new ShopServiceImpl();
}


@Bean
public CommentService commentService() {
    return new CommentServiceImpl();
}

@Bean
public RatingService ratingService() {
    return new RatingServiceImpl();
}

@Bean
public ProductService productService() {
    return new ProductServiceImpl();
}


@Bean
public TomcatServletWebServerFactory tomcatFactory() {
    return new TomcatServletWebServerFactory() {
        @Override
        protected void postProcessContext(Context context) {
            ((StandardJarScanner) context.getJarScanner()).setScanManifest(false);
        }
    };
})

还有 Vaadin 示例：

@Route("/TestMySelf")
public class MainView extends VerticalLayout {
  public MainView() {
    Label label = new Label("Hello its CloudLiquid");
  }
}

Answer 1

您使用的vaadin-spring-boot-starter 是什么版本？

来自this，它说这是vaadin-spring-boot-starter的某些旧版本与Spring Boot 2.1一起使用时的已知问题，它将在一些新版本中修复：

我们还有另一种解决方法，也即将找到 无需解决方法即可正确修复。不管是哪个 我们首先使用的方法，下周我们应该发布平台版本 使用 Spring Boot 2.1。 （v10、v11 和 v12）

抱歉，在更新到 Spring 之前让您等待 启动 2.1，我们应该早点看看这个 - 我的错。

然后从发布说明here，它说版本10.1.0支持Spring Boot 2.1。所以我的建议是将vaadin-spring-boot-starter 至少升级到 10.1.0 或最新版本。