关于pom文件中spring-cloud-starter-oauth2引入失败这件事

新建项目，不管怎么弄spring-cloud-starter-oauth2依赖一直引入不了，mmp，记录一下，下面给出pom文件

    4.0.0

    
        org.springframework.boot
        spring-boot-starter-parent
        2.6.3
        
    

    com
    spring-securityoauth2-demo
    2.1.0-SNAPSHOT
    spring-securityoauth2-demo
    Demo project for Spring Boot


    
        1.8
        Greenwich.SR2
    

    

        
        
            org.springframework.cloud
            spring-cloud-starter-oauth2
        

        
        
            org.springframework.cloud
            spring-cloud-starter-security
        

        
        
            org.springframework.boot
            spring-boot-starter
        

        
        
            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