javaweb-dbutils

package cn.itcast.demo;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.sql.SQLException;
import java.util.Date;
import java.util.List;

import javax.sql.rowset.serial.SerialClob;

import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanHandler;
import org.apache.commons.dbutils.handlers.BeanListHandler;
import org.junit.Test;

import cn.itcast.domain.User;
import cn.itcast.utils.JdbcUtils;

public class Demo1 {

/*
*
* 使用dbutils框架完成curd,以及批处理
*
create database day17; use day17;

create table user( id int primary key auto_increment, name varchar(40),
password varchar(40), email varchar(60), birthday date );


insert into user(name,password,email,birthday)values('zs','123456','zs@sina.com','1980-09-09');
insert into user(name,password,email,birthday) values('lisi','123456','lisi@sina.com','1980-09-09');
insert into user(name,password,email,birthday) values('wangwu','123456','wangwu@sina.com','1980-09-09');
*
*/

@Test
public void add() throws SQLException {

QueryRunner qr = new QueryRunner(JdbcUtils.getDataSource());//得到一个connection

String sql = "insert into user(name,password,email,birthday) values(?,?,?,?)";
Object params[] = { "ccc", "123", "cc@sina.com", new Date() };
qr.update(sql, params);
}

@Test
public void delete() throws SQLException {

QueryRunner qr = new QueryRunner(JdbcUtils.getDataSource());
String sql = "delete from user where id=?";
qr.update(sql, 1);

}

@Test
public void update() throws SQLException {
QueryRunner qr = new QueryRunner(JdbcUtils.getDataSource());
String sql = "update user set name=? where id=?";
Object params[] = { "ddd", 5 };
qr.update(sql, params);
}

@Test
public void find() throws SQLException {
QueryRunner qr = new QueryRunner(JdbcUtils.getDataSource());
String sql = "select * from user where id=?";
Object params[] = { 2 };
User user = (User) qr.query(sql, params, new BeanHandler(User.class));
System.out.println(user.getBirthday());
}

@Test
public void getAll() throws SQLException {
QueryRunner qr = new QueryRunner(JdbcUtils.getDataSource());
String sql = "select * from user";
List list = (List) qr.query(sql, new BeanListHandler(User.class));
System.out.println(list.size());
}

@Test
public void testBatch() throws SQLException {
QueryRunner qr = new QueryRunner(JdbcUtils.getDataSource());
String sql = "insert into user(name,password,email,birthday) values(?,?,?,?)";
Object params[][] = new Object[10][];
for (int i = 0; i < 10; i++) {
params[i] = new Object[] { "aa" + i, "123", "aa@sina.com",
new Date() };
}
qr.batch(sql, params);
}

// 用dbutils完成大数据（不建议用）
/***************************************************************************
create table testclob
(
id int primary key auto_increment,
resume text
);
* @throws SQLException
* @throws IOException
**************************************************************************/

@Test
public void testclob() throws SQLException, IOException{
QueryRunner runner = new QueryRunner(JdbcUtils.getDataSource());
String sql = "insert into testclob(resume) values(?)"; //clob


//替换参数
/*String path = Demo1.class.getClassLoader().getResource("1.txt").getPath();
Object params[] = {new FileReader(path)};
*/

String path = Demo1.class.getClassLoader().getResource("1.txt").getPath();
FileReader in = new FileReader(path);
char[] buffer = new char[(int) new File(path).length()];
in.read(buffer);
SerialClob clob = new SerialClob(buffer);
Object params[] = {clob};
runner.update(sql, params);
}

}