Java中Connection方法笔记 http://www.cnblogs.com/bincoding/p/6554954.html
ResultSet详解(转) https://www.cnblogs.com/timxgb/p/4796038.html
关于PreparedStatement.addBatch()方法 https://blog.csdn.net/qq_33393542/article/details/78949987 关于批量提交的
ThreadLocal https://www.cnblogs.com/jasongj/p/8079718.html