背景：

学习spring-cloud时，提示：org.springframework.cloud:spring-cloud-starter-netflix-eureka-server:unknown

问题原因：根据排查原因是springboot和spring-cloud依赖的包冲突

解决方式

        <!--eureka 客户端依赖 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-commons</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-commons</artifactId>
            <version>2.1.0.RELEASE</version>
        </dependency>