大家好,又见面了,我是全栈君,今天给大家准备了Idea注册码。
commons-dbutils 这是 Apache 提供了一个开源组织 JDBC工具库,它是JDBC简包,学习成本低,和使用dbutils可以大大简化jdbc的工作量,同一时候也不会影响程序的性能。因此dbutils成为非常多不喜欢hibernate的公司的首选。
代码语言:javascript复制/**
* DbUtils的使用方法: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); //这里能够加断点调试观察 } }
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