error too much

[lizongying]

➜ tars-spring-boot-server git:(v1.7.x) ✗ cd ../tars-spring-boot-client ➜ tars-spring-boot-client git:(v1.7.x) ✗ mvn package
[INFO] Scanning for projects... [ERROR] [ERROR] Some problems were encountered while processing the POMs: [WARNING] 'build.plugins.plugin.version' for org.springframework.boot:spring-boot-maven-plugin is missing. @ line 122, column 21 [ERROR] 'dependencies.dependency.version' for com.tencent.tars:tars-spring-boot-starter:jar must be a valid version but is '${revision}'. @ line 38, column 22 @