Apache-Commons-Collections 1
Apache-Commons-Collections 2
Apache-Commons-Collections 3
Apache-Commons-Collections 4
Apache-Commons-Collections 5
Apache-Commons-Collections 6
Apache-Commons-Collections 7
一些trick
reference:https://clq0.top/commons_collections_analysis/
http://wjlshare.com/archives/1535
https://xz.aliyun.com/t/9409#toc-7
https://paper.seebug.org/1242/#commons-collections-7