Reproduced in: https://www.jianshu.com/p/6215af9801a0
I. used in the packet mode for the parent module pom:
<!-- 在父pom中的dependencies标签中的jar配置，子pom会直接继承 -->
<depedencies> ... </depedencies> Sub-modules will be directly inherited from the parent module in a jar
in this way are generally used: configure each module requires a jar package and other configuration information in the parent pom
Second, the leader packet used in the embodiment as parent module pom:
<dependencyManagement>
<dependencies> ... </dependencies> </dependencyManagement> Sub-module pom pom does not automatically inherit the parent module in a jar, if you need to use, it is necessary to give groupId and artifactId , without giving version
in this manner configured by the parent unified management module dependent version
to sum up
Maven <dependencyManagement> and <dependencies> difference
<Dependencies> directly in the jar to the project management is dependencies. (If you have a parent pom, sub-pom, pom the child can only passively accept the version of the parent pom)
<DependencyManagement> key management version, for sub-module inherits the same parent module is useful, centralized management relies version does not add dependencies to define which version of the sub-pom pom does not have to inherit the parent version defined.
Author: silent _8421
link: https: //www.jianshu.com/p/6215af9801a0
Source: Jane books
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