com.netflix.discovery.AbstractDiscoveryClientOptionalArgs that could not be found

spring cloud

在搭建项目时，仅使用了eureka client，启动时报错：

Field optionalArgs in org.springframework.cloud.netflix.eureka.EurekaClientAutoConfiguration$RefreshableEurekaClientConfiguration required a bean of type 'com.netflix.discovery.AbstractDiscoveryClientOptionalArgs' that could not be found.

The injection point has the following annotations:
    - @org.springframework.beans.factory.annotation.Autowired(required=true)

Action:

Consider defining a bean of type 'com.netflix.discovery.AbstractDiscoveryClientOptionalArgs' in your configuration.

Process finished with exit code 1

在项目中搜索了下，发现AbstractDiscoveryClientOptionalArgs类其实是存在的。

百度了下原因，有人说是由于高版本的SpringBoot需要应用spring-boot-starter-web包，不然会出现上面异常；低版本是可以兼容的。

so，加上spring-boot-starter-web包，问题解决。

附上完整的POM文件

    4.0.0
    
        org.springframework.boot
        spring-boot-starter-parent
        2.4.3
         
    
    com.example
    demo
    0.0.1-SNAPSHOT
    demo
    Demo project for Spring Boot Cloud
    
        1.8
        2020.0.1
    
    
        
            org.springframework.boot
            spring-boot-starter-web
        

        
            org.springframework.cloud
            spring-cloud-starter-netflix-eureka-client
        

        
            org.projectlombok
            lombok
            true
        
        
            org.springframework.boot
            spring-boot-starter-test
            test
        
    
    
        
            
                org.springframework.cloud
                spring-cloud-dependencies
                ${spring-cloud.version}
                pom
                import
            
        
    

    
        
            
                org.springframework.boot
                spring-boot-maven-plugin
                
                    
                        
                            org.projectlombok
                            lombok