JDBC连接数据库源代码：对代码稍作修改，比如：更改驱动、更改数据库名称、更改数据库地址，可以连接Oracle、SQL Server两种数据库。该源码中定义了查询和更新操作的通用方法，外部类调用时，只需传入sql语句和要查询或更新的数据库字段名就可以了。非常方便，我已经使用了很长时间了。-JDBC to connect to the database source code : the code to make some modifications, such as : changes driven changes in the database name, changes in the database addresses, can be connected to Oracle, SQL Server database two. The source defined inquiries and updating of a common approach, called external category, only imported sql statement and to check or update the database field names on it. Very convenient, I have been in use for a long time.