maven 依赖树分析：https://blog.csdn.net/tcxianggg/article/details/84766970?utm_medium=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-3.control&depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-3.control
- mvn dependency:tree -Dverbose -Dincludes=commons-collections
- 其中omitted for duplicate表示有jar包被重复依赖，最后写着omitted for conflict with xxx的，说明和别的jar包版本冲突了，而该行的jar包不会被引入。
- https://www.cnblogs.com/linyb-geek/p/13181684.html