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Java Dao模式

什么是DAO 　　DAO是Data Access Object数据访问接口，数据访问：故名思义就是与数据库打交道。夹在业务逻辑与数据库资源中间。 DAO的功能: 　　1. DAO用来封装Data Source的..就比如,Connection conn = DriverManager.getConn...

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