摘要：
转自：http://blog.csdn.net/ludonqin/article/details/47211109 阅读全文
摘要：
1、ThreadLocal https://www.jianshu.com/p/98b68c97df9b https://www.cnblogs.com/dolphin0520/p/3920407.html https://www.jianshu.com/p/a1cd61fa22da 2、Strin 阅读全文