Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-depend

mvn clean命令，报错如下：

[INFO] Scanning for projects…
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/springframework/cloud/spring-cloud-commons-dependencies/1.2.2.RELEASE/spring-cloud-commons-dependencies-1.2.2.RELEASE.pom
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/springframework/cloud/spring-cloud-netflix-dependencies/1.3.1.RELEASE/spring-cloud-netflix-dependencies-1.3.1.RELEASE.pom
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/springframework/cloud/spring-cloud-stream-dependencies/Chelsea.SR2/spring-cloud-stream-dependencies-Chelsea.SR2.pom
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/springframework/cloud/spring-cloud-task-dependencies/1.1.2.RELEASE/spring-cloud-task-dependencies-1.1.2.RELEASE.pom
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/springframework/cloud/spring-cloud-config-dependencies/1.3.1.RELEASE/spring-cloud-config-dependencies-1.3.1.RELEASE.pom
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/springframework/cloud/spring-cloud-consul-dependencies/1.2.1.RELEASE/spring-cloud-consul-dependencies-1.2.1.RELEASE.pom
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/springframework/cloud/spring-cloud-sleuth-dependencies/1.2.1.RELEASE/spring-cloud-sleuth-dependencies-1.2.1.RELEASE.pom
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/springframework/cloud/spring-cloud-vault-dependencies/1.0.1.RELEASE/spring-cloud-vault-dependencies-1.0.1.RELEASE.pom
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/springframework/cloud/spring-cloud-zookeeper-dependencies/1.1.1.RELEASE/spring-cloud-zookeeper-dependencies-1.1.1.RELEASE.pom
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/springframework/cloud/spring-cloud-security-dependencies/1.2.1.RELEASE/spring-cloud-security-dependencies-1.2.1.RELEASE.pom
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/springframework/cloud/spring-cloud-cloudfoundry-dependencies/1.1.0.RELEASE/spring-cloud-cloudfoundry-dependencies-1.1.0.RELEASE.pom
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/springframework/cloud/spring-cloud-bus-dependencies/1.3.1.RELEASE/spring-cloud-bus-dependencies-1.3.1.RELEASE.pom
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/springframework/cloud/spring-cloud-contract-dependencies/1.1.1.RELEASE/spring-cloud-contract-dependencies-1.1.1.RELEASE.pom
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/springframework/cloud/spring-cloud-aws-dependencies/1.2.1.RELEASE/spring-cloud-aws-dependencies-1.2.1.RELEASE.pom
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/com/fasterxml/jackson/jackson-bom/2.8.10/jackson-bom-2.8.10.pom
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/apache/logging/log4j/log4j-bom/2.7/log4j-bom-2.7.pom
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/springframework/spring-framework-bom/4.3.13.RELEASE/spring-framework-bom-4.3.13.RELEASE.pom
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/springframework/data/spring-data-releasetrain/Ingalls-SR9/spring-data-releasetrain-Ingalls-SR9.pom
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/springframework/integration/spring-integration-bom/4.3.12.RELEASE/spring-integration-bom-4.3.12.RELEASE.pom
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/springframework/security/spring-security-bom/4.2.3.RELEASE/spring-security-bom-4.2.3.RELEASE.pom
[ERROR] [ERROR] Some problems were encountered while processing the POMs:
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-commons-dependencies:pom:1.2.2.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 36, column 16
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-netflix-dependencies:pom:1.3.1.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 43, column 16
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-stream-dependencies:pom:Chelsea.SR2 from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 50, column 16
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-task-dependencies:pom:1.1.2.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 57, column 16
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-config-dependencies:pom:1.3.1.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 64, column 16
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-consul-dependencies:pom:1.2.1.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 71, column 16
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-sleuth-dependencies:pom:1.2.1.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 78, column 16
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-vault-dependencies:pom:1.0.1.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 85, column 16
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-zookeeper-dependencies:pom:1.1.1.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 92, column 16
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-security-dependencies:pom:1.2.1.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 99, column 16
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-cloudfoundry-dependencies:pom:1.1.0.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 106, column 16
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-bus-dependencies:pom:1.3.1.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 113, column 16
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-contract-dependencies:pom:1.1.1.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 120, column 16
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-aws-dependencies:pom:1.2.1.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 127, column 16
[ERROR] Non-resolvable import POM: Could not transfer artifact com.fasterxml.jackson:jackson-bom:pom:2.8.10 from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.boot:spring-boot-dependencies:1.5.9.RELEASE, C:\Users\chenjianjun.m2\repository\org\springframework\boot\spring-boot-dependencies\1.5.9.RELEASE\spring-boot-dependencies-1.5.9.RELEASE.pom, line 614, column 16
[ERROR] Non-resolvable import POM: Could not transfer artifact org.apache.logging.log4j:log4j-bom:pom:2.7 from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.boot:spring-boot-dependencies:1.5.9.RELEASE, C:\Users\chenjianjun.m2\repository\org\springframework\boot\spring-boot-dependencies\1.5.9.RELEASE\spring-boot-dependencies-1.5.9.RELEASE.pom, line 1340, column 16
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework:spring-framework-bom:pom:4.3.13.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.boot:spring-boot-dependencies:1.5.9.RELEASE, C:\Users\chenjianjun.m2\repository\org\springframework\boot\spring-boot-dependencies\1.5.9.RELEASE\spring-boot-dependencies-1.5.9.RELEASE.pom, line 2407, column 16
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.data:spring-data-releasetrain:pom:Ingalls-SR9 from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.boot:spring-boot-dependencies:1.5.9.RELEASE, C:\Users\chenjianjun.m2\repository\org\springframework\boot\spring-boot-dependencies\1.5.9.RELEASE\spring-boot-dependencies-1.5.9.RELEASE.pom, line 2480, column 16
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.integration:spring-integration-bom:pom:4.3.12.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.boot:spring-boot-dependencies:1.5.9.RELEASE, C:\Users\chenjianjun.m2\repository\org\springframework\boot\spring-boot-dependencies\1.5.9.RELEASE\spring-boot-dependencies-1.5.9.RELEASE.pom, line 2502, column 16
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.security:spring-security-bom:pom:4.2.3.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.boot:spring-boot-dependencies:1.5.9.RELEASE, C:\Users\chenjianjun.m2\repository\org\springframework\boot\spring-boot-dependencies\1.5.9.RELEASE\spring-boot-dependencies-1.5.9.RELEASE.pom, line 2594, column 16
[ERROR] ‘dependencies.dependency.version’ for org.projectlombok:lombok:jar is missing. @ com.atguigu.springcloud:microservicecloud-api:[unknown-version], D:\workspace\microservicecloud\microservicecloud-api\pom.xml, line 12, column 16
@
[ERROR] The build could not read 1 project -> [Help 1]
[ERROR]
[ERROR] The project com.atguigu.springcloud:microservicecloud-api:0.0.1-SNAPSHOT (D:\workspace\microservicecloud\microservicecloud-api\pom.xml) has 21 errors
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-commons-dependencies:pom:1.2.2.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 36, column 16 -> [Help 2]
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-netflix-dependencies:pom:1.3.1.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 43, column 16 -> [Help 2]
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-stream-dependencies:pom:Chelsea.SR2 from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 50, column 16 -> [Help 2]
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-task-dependencies:pom:1.1.2.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 57, column 16 -> [Help 2]
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-config-dependencies:pom:1.3.1.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 64, column 16 -> [Help 2]
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-consul-dependencies:pom:1.2.1.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 71, column 16 -> [Help 2]
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-sleuth-dependencies:pom:1.2.1.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 78, column 16 -> [Help 2]
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-vault-dependencies:pom:1.0.1.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 85, column 16 -> [Help 2]
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-zookeeper-dependencies:pom:1.1.1.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 92, column 16 -> [Help 2]
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-security-dependencies:pom:1.2.1.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 99, column 16 -> [Help 2]
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-cloudfoundry-dependencies:pom:1.1.0.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 106, column 16 -> [Help 2]
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-bus-dependencies:pom:1.3.1.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 113, column 16 -> [Help 2]
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-contract-dependencies:pom:1.1.1.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 120, column 16 -> [Help 2]
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.cloud:spring-cloud-aws-dependencies:pom:1.2.1.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.cloud:spring-cloud-dependencies:Dalston.SR1, C:\Users\chenjianjun.m2\repository\org\springframework\cloud\spring-cloud-dependencies\Dalston.SR1\spring-cloud-dependencies-Dalston.SR1.pom, line 127, column 16 -> [Help 2]
[ERROR] Non-resolvable import POM: Could not transfer artifact com.fasterxml.jackson:jackson-bom:pom:2.8.10 from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.boot:spring-boot-dependencies:1.5.9.RELEASE, C:\Users\chenjianjun.m2\repository\org\springframework\boot\spring-boot-dependencies\1.5.9.RELEASE\spring-boot-dependencies-1.5.9.RELEASE.pom, line 614, column 16 -> [Help 2]
[ERROR] Non-resolvable import POM: Could not transfer artifact org.apache.logging.log4j:log4j-bom:pom:2.7 from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.boot:spring-boot-dependencies:1.5.9.RELEASE, C:\Users\chenjianjun.m2\repository\org\springframework\boot\spring-boot-dependencies\1.5.9.RELEASE\spring-boot-dependencies-1.5.9.RELEASE.pom, line 1340, column 16 -> [Help 2]
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework:spring-framework-bom:pom:4.3.13.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.boot:spring-boot-dependencies:1.5.9.RELEASE, C:\Users\chenjianjun.m2\repository\org\springframework\boot\spring-boot-dependencies\1.5.9.RELEASE\spring-boot-dependencies-1.5.9.RELEASE.pom, line 2407, column 16 -> [Help 2]
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.data:spring-data-releasetrain:pom:Ingalls-SR9 from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.boot:spring-boot-dependencies:1.5.9.RELEASE, C:\Users\chenjianjun.m2\repository\org\springframework\boot\spring-boot-dependencies\1.5.9.RELEASE\spring-boot-dependencies-1.5.9.RELEASE.pom, line 2480, column 16 -> [Help 2]
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.integration:spring-integration-bom:pom:4.3.12.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.boot:spring-boot-dependencies:1.5.9.RELEASE, C:\Users\chenjianjun.m2\repository\org\springframework\boot\spring-boot-dependencies\1.5.9.RELEASE\spring-boot-dependencies-1.5.9.RELEASE.pom, line 2502, column 16 -> [Help 2]
[ERROR] Non-resolvable import POM: Could not transfer artifact org.springframework.security:spring-security-bom:pom:4.2.3.RELEASE from/to central (https://repo.maven.apache.org/maven2): Received fatal alert: protocol_version @ org.springframework.boot:spring-boot-dependencies:1.5.9.RELEASE, C:\Users\chenjianjun.m2\repository\org\springframework\boot\spring-boot-dependencies\1.5.9.RELEASE\spring-boot-dependencies-1.5.9.RELEASE.pom, line 2594, column 16 -> [Help 2]
[ERROR] ‘dependencies.dependency.version’ for org.projectlombok:lombok:jar is missing. @ com.atguigu.springcloud:microservicecloud-api:[unknown-version], D:\workspace\microservicecloud\microservicecloud-api\pom.xml, line 12, column 16
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/ProjectBuildingException
[ERROR] [Help 2] http://cwiki.apache.org/confluence/display/MAVEN/UnresolvableModelException

pom.xml中repositories改成如下，解决问题：

spring-milestones Spring Milestones https://repo.spring.io/milestone false repository.springframework.maven.release Spring Framework Maven Release Repository http://maven.springframework.org/milestone/ org.springframework http://maven.springframework.org/snapshot spring-milestone Spring Maven MILESTONE Repository http://repo.spring.io/libs-milestone spring-release Spring Maven RELEASE Repository http://repo.spring.io/libs-release