mvn dependency:copy-dependencies -DoutputDirectory=/home/admin/git/oceanus/test 會把所有依賴的插件版本都拷貝進去，而不是項目最后使用的插件
>mvn dependency:analyze
[INFO] --- maven-dependency-plugin:2.8:analyze (default-cli) @ wtp-core ---
[WARNING] Used undeclared dependencies found:
[WARNING] org.springframework:spring-beans:jar:3.2.3.RELEASE:compile
[WARNING] Unused declared dependencies found:
[WARNING] junit:junit:jar:4.7:test
[WARNING] org.springframework:spring-test:jar:3.2.3.RELEASE:test
[WARNING] org.slf4j:jcl-over-slf4j:jar:1.6.1:runtime
[WARNING] org.slf4j:slf4j-log4j12:jar:1.6.1:runtime
[WARNING] commons-lang:commons-lang:jar:2.5:test
參考：
1、https://www.jianshu.com/p/d828766786d4
2、http://www.cnblogs.com/yang-wu/p/3262499.html
3、https://maven.apache.org/enforcer/enforcer-rules/bannedDependencies.html