学步园

package com.itheima.util;

import java.sql.SQLException;
import java.util.List;

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

public class DbUtilDemo
{
	private QueryRunner qu = new QueryRunner(C3P0Util.getDatasource());
	@Test
	public void add() throws Exception
	{
		String sql = "insert into account values(?,?,?)";
		qu.update(sql, 9,"lll",1222);
	}
	@Test
	public void addBatch() throws Exception
	{
		String sql = "insert into account values(?,?,?)";
		Object[][] param = new Object[10][];
		for(int i=0;i<param.length;i++)
		{
			param[i] = new Object[]{i+20,"ccc"+i,999};
		}
		qu.batch(sql, param);
	}
	@Test
	public void query() throws Exception
	{
		String sql = "select * from account where id=?";
		Account ac = qu.query(sql, new BeanHandler<Account>(Account.class),1);
		System.out.println(ac);
	}
	@Test
	public void queryAll() throws Exception
	{
		String sql = "select * from account";
		List<Account> list = qu.query(sql, new BeanListHandler<Account>(Account.class));
		System.out.println(list);
	}
	@Test
	public void test1() throws Exception
	{
		String sql = "select * from account";
		Object[] obj = qu.query(sql, new ArrayHandler());
		for(Object ac : obj)
			System.out.println(ac);
	}
	@Test
	public void test2() throws Exception
	{
		String sql = "select * from account";
		List<Object[]> list = (List<Object[]>)qu.query(sql, new ArrayListHandler());
		for(Object[] ac : list)
			for(Object o:ac)
			{
				System.out.println(o);
			}
	}
	

}

写上面代码的前提是导入apache.common.dbutil的包