装数据库操作，目的就是为了隐藏java.sql包内的类，在编码中去掉核心的数据库操作代码。这种方式,不能适应大数据量的查询,不过如果真的碰到大数据量的查询,那用什么封装都不好,还是得直接数据库操作.



　　封装数据库操作，目的就是为了隐藏java.sql包内的类，在编码中去掉核心的数据库操作代码。以杜绝直接数据库操作容易带来的资源未释放问题。同时也减少了数据库操作的编码量。



　　但是很多网友在封装时，却喜欢返回结果集(ResultSet对象)，那么这个封装就没有意义了。

-Install database operation, the purpose is to hide within the class of java.sql package in the code to remove the core database operations in code. In this way, can not meet the large amount of data query, but if we really encounter a large amount of data query, what package it is not good, still have direct database operations. Package database operations, the purpose is to hide the java.sql package the class, the code in the code to remove the core database operations. To put an end to direct the resources of the database is not easy to bring the issue of release. Also reduce the amount of database operations coding. But many users in the package, but like to return a result set (ResultSet object), then this package does not make sense.