https://mp.weixin.qq.com/s?__biz=MzAxNjk4ODE4OQ==&mid=2247484997&idx=1&sn=00c7f02c51252550f249be59514cd6f9&chksm=9bed2737ac9aae21223ed4766b2b53420bf0fb7db6667fa6fabf483b0c62fc89ffdff23d84ed&scene=21#wechat_redirect 来源：https://www.cnblogs.com/weigy/p/12574251.html 标签 线程安全
