mvn clean后，出現(xiàn)下面的log

[INFO] Scanning for projects...
[ERROR] [ERROR] Some problems were encountered while processing the POMs:
[ERROR] 'dependencies.dependency.version' for org.slf4j:slf4j-nop:jar is missing. @ com.henry.flink:DataClean:[unknown-version], /home/appleyuchi/桌面/Flink_Code/flink清洗數(shù)據(jù)案例/FlinkProj/DataClean/pom.xml, line 57, column 21
?@?
[ERROR] The build could not read 1 project -> [Help 1]
[ERROR] ??
[ERROR] ? The project com.henry.flink:DataClean:1.0-SNAPSHOT (/home/appleyuchi/桌面/Flink_Code/flink清洗數(shù)據(jù)案例/FlinkProj/DataClean/pom.xml) has 1 error
[ERROR] ? ? 'dependencies.dependency.version' for org.slf4j:slf4j-nop:jar is missing. @ com.henry.flink:DataClean:[unknown-version], /home/appleyuchi/桌面/Flink_Code/flink清洗數(shù)據(jù)案例/FlinkProj/DataClean/pom.xml, line 57, column 21
[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

Process finished with exit code 1

?

原因：

這個(gè)原因是因?yàn)楦竝om中定義了子pom中的版本，

當(dāng)刪除 父pom中的內(nèi)容時(shí)，就會(huì)導(dǎo)致子pom所在的工程執(zhí)行mvn出現(xiàn)上述版本消失的報(bào)錯(cuò)。

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