2.放在哪:
tomcat是common/lib 或 WEB-INF的LIB
3. 驱动的写法
Class.forName("org.gjt.mm.mysql.Driver").newInstance(); 或者替换 com.mysql.jdbc.Driver;(mysql 3.0 以后)
4.jdbc的使用参考:
http://blog.youkuaiyun.com/wujingwen1111/article/details/5842734
5.关于三个接口的使用:
preparedstatement, statement,CallableStatementhttp://blog.youkuaiyun.com/zhengqikey/article/details/6870787
http://blog.youkuaiyun.com/liantingwqn/article/details/3871167