Failed to process import candidates for configuration class [com.wjm.springcloud.Application]; nested exception is java.io.FileN

这说明springboot 中版本冲突了

例如

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <version>2.4.1</version>
        </dependency>



        <!-- Hystrix Dashboard -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-hystrix-dashboard</artifactId>
            <version>1.4.7.RELEASE</version>
        </dependency>
    </dependencies>

    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-hystrix-dashboard</artifactId>
        <version>1.4.7.RELEASE</version>
    </dependency>
</dependencies>

默认带了springboot 但是我用的是 2.4.1的springboot 所以 必须配合对应版本的

<!-- Hystrix Dashboard 底层实际上用了springboot所以不需要再倒入springboot-starter-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
            <version>2.2.6.RELEASE</version>
        </dependency>

成功