(Mybatis plus is an enhanced tool for mybatis. It is only enhanced on the basis of mybatis without change. Born to simplify development and improve efficiency. Mybatis plus provides general mapper and service, which can quickly realize crud, batch processing, logical deletion, paging and other operations on a single table without writing any SQL statements. This set of video tutorials explains in detail the characteristics and use of mybatis plus, the excellent plug-ins provided by mybatis plus, the configuration of multiple data sources, and the function of rapid development plug-in mybatisx. demonstration. This tutorial provides a full set of videos, notes and source code.)