the maven jar package depends on conflict resolution version

Transitive dependencies in the package version conflicts

Regulating principles:
1 path recently, the principle of priority
if the use is version 4.2.4, you can manually add their own dependencies

that this time used the jar is spring-beans 4.2.4
2 first declaration takes precedence over the principles
to be used jar package version in front of the

exclusion principle:

version lock principle
to add the following content in front of the configuration file, lock spring-beans version

if there are multiple versions need to be locked jar package can extract variables

so that the following are the introduction of these jar package can not written version number.