Vaadin 14 '在重新打包后无法导航到“'

Posted 2023-02-27

【中文标题】Vaadin 14 \'在重新打包后无法导航到“\'

【英文标题】：Vaadin 14 'could not navigate to " ' after being repackedVaadin 14 '在重新打包后无法导航到“'

【发布时间】：2020-02-14 00:11:29

【问题描述】：

我的项目有问题。也许你能帮我一点忙。 我目前正在尝试编写一个小 webapp。我为此使用 Spring Boot + Vaadin 14。 当我在 Eclipse 中测试应用程序时，一切都按设计工作。但是在我用 Maven 编译我的项目并启动它之后，我收到一条错误消息，我的应用程序找不到任何路由。

这是错误信息：

Could not navigate to ''
Reason: Couldn't find route for ''

Available routes:
This detailed message is only shown when running in development mode.

这是我的 pom：

?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.9.RELEASE</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>
    <groupId>(REMOVED FOR PRIVACY REASONS)</groupId>
    <artifactId>(REMOVED FOR PRIVACY REASONS)</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>mobileissuecreator</name>
    <packaging>jar</packaging>

    <properties>
        <java.version>1.8</java.version>
        <vaadin.version>14.0.9</vaadin.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>com.vaadin</groupId>
            <artifactId>vaadin-spring-boot-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </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>
</project>

我的应用程序入门类：

package com.cen.spin.mobileissuecreator.springcontroller;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.context.annotation.SessionScope;


import com.vaadin.flow.spring.annotation.EnableVaadin;

@Configuration
@SpringBootApplication
@EnableVaadin("(REMOVED FOR PRIVACY REASONS)")
public class (REMOVED FOR PRIVACY REASONS) extends SpringBootServletInitializer 

    public static void main(String[] args) 
        SpringApplication.run((REMOVED FOR PRIVACY REASONS).class, args);
    

    @Bean
    @SessionScope
    public MICService micService(EnoviaAuthService enoviaAuthService, EnoviaAuthProperties enoviaAuthProperties) 
        return new MICService(enoviaAuthService, enoviaAuthProperties);
    

    @Bean
    @SessionScope
    public EnoviaAuthService enoviaAuthService(EnoviaAuthProperties enoviaAuthProperties) throws Exception 
        return new EnoviaAuthService(enoviaAuthProperties);
    

    @Bean
    @SessionScope
    public EnoviaAuthProperties enoviaAuthProperties() 
        return new EnoviaAuthProperties();
    

    @Bean
    @SessionScope
    public EnoviaRoleSelectorService enoviaRoleSelectorService(EnoviaAuthService enoviaAuthService) 
        return new EnoviaRoleSelectorService(enoviaAuthService);
    

    @Bean
    @SessionScope
    public EnoviaContextCheckService enoviaContextCheckService(EnoviaAuthService enoviaAuthService) 
        return new EnoviaContextCheckService(enoviaAuthService);
    

如果你能帮助我，那就太好了。

谢谢！

【问题讨论】：

你有@Route annotation的视图吗？

是的。每个 View 都有一个 @Route 注解。同时，我找到了解决方法。如果我将所有类放在同一个包中，它会在编译后工作。难道不能在不同的包中拥有类吗？

【参考方案1】：

问题是因为你的配置类默认只扫描它定义的包及其所有子包。

因此，为了解决您的问题，您应该执行以下操作之一：

定义要扫描的附加包，默认情况下尚未扫描。您可以在带有scanBasePackages 属性的@SpringBootApplication 注释中执行此操作。

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