maven报错nullPointer

国内找不到问题解答,这时候就得google上了,stackoverflow上答案


http://stackoverflow.com/questions/23078500/maven-throws-nullpointer-exception


[INFO] Scanning for projects...[ERROR] Internal error: java.lang.NullPointerException -> [Help 1]org.apache.maven.InternalErrorException: Internal error: java.lang.NullPointerException
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:167)
        at org.apache.maven.cli.MavenCli.execute(MavenCli.java:584)


You have a cyclic reference of dependencies.

It looks like your crm-core project has crm-data in its dependencies and the crm-data project has crm-core in its dependencies.

Maven can't compile such a case.


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