commons-dbutils 是 Apache 组织提供的一个开源 JDBC工具类库，它是对JDBC的简单封装，学习成本极低，并且使用dbutils能极大简化jdbc编码的工作量，同时也不会影响程序的性能。因此dbutils成为很多不喜欢hibernate的公司的首选。
/**
* DbUtils的用法:利用DbUtils实现增删改查操作
* @project_name Day12
* @class_name DbUtilsDemo1
* @author Dovinya
* @data 2014-8-27 下午11:07:09
* @version 1
* @notes
*/
/*
create database day12;
use day12;
create table table1 (
id int primary key auto_increment,
name varchar(20),
salary double
);
insert into table1 values(null,'zhang',234.5);
insert into table1 values(null,'li',234.5);
insert into table1 values(null,'wang',3242);
insert into table1 values(null,'zhao',32543);
insert into table1 values(null,'pan',4654);
insert into table1 values(null,'he',4235);
*
*/
public class DbUtilsDemo1 {
/*
* 利用DbUtils实现更改操作
*/
public void update() throws SQLException {
//获取数据源对象
QueryRunner runner = new QueryRunner(new ComboPooledDataSource());
runner.update("update table1 set salary =100");
}
@Test
public void add() throws SQLException{
//获取数据源对象
QueryRunner runner = new QueryRunner(new ComboPooledDataSource());
runner.update("insert into table1 values(1,?,?)","lisi",1000);
}
@Test
public void delete() throws SQLException{
//获取数据源对象
QueryRunner runner = new QueryRunner(new ComboPooledDataSource());
runner.update("delete from table1 where name = 'lisi'");
}
@Test
public void query() throws SQLException{
//获取数据源对象
QueryRunner runner = new QueryRunner(new ComboPooledDataSource());
List<User> list = runner.query("select *from table1 where id<?", new ResultSetHandler<List<User>>(){
@Override
public List<User> handle(ResultSet rs) throws SQLException {
List<User> list = new ArrayList<User>();
while(rs.next()){
User user = new User();
user.setId(rs.getInt("id"));
user.setName(rs.getString("name"));
user.setSalary(rs.getDouble("salary"));
list.add(user);
}
return list;
}
}, 5);
System.out.println(list); //这里可以加断点调试观察
}
}