jdbctemplatequery.java

Spring2.0宝典

package lee;

import java.util.List;
import java.util.Iterator;

import javax.sql.DataSource;
import com.mchange.v2.c3p0.ComboPooledDataSource;

import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowMapper;

import java.util.Map;
import java.sql.*;

/**
 * @author  yeeku.H.lee [e-mail]
 * @version  1.0
 * <br>Copyright (C), 2005-2008, yeeku.H.Lee
 * <br>This program is protected by copyright laws.
 * <br>Program Name:
 * <br>Date: 
 */

public class JdbcTemplateQuery
{
	
	public static void main(String[] args)throws Exception
	{

		ComboPooledDataSource ds = new ComboPooledDataSource();
		ds.setDriverClass("com.mysql.jdbc.Driver");
		ds.setJdbcUrl("jdbc:mysql://localhost:3306/j2ee");
		ds.setUser("root");
		ds.setPassword("32147");
        ds.setMaxPoolSize(40);
        ds.setMinPoolSize(2); 
        ds.setMaxStatements(180); 
		
		//创建一个JdbcTemplate
		JdbcTemplate jt = new JdbcTemplate();
		//为JdbcTemplate指定DataSource
		jt.setDataSource(ds);

		List personList = jt.query("select * from person_test" , new RowMapper()
		{
			public Object mapRow(ResultSet rs, int rowNum) throws SQLException
			{
				Person p = new Person();
				p.setName(rs.getString(2));
				p.setAge(rs.getInt(3));
				return p;
			}
		});
		for(Iterator it = personList.iterator();it.hasNext();)
		{
			System.out.println(it.next());
		}
		System.out.println("使用PreparedStatement开始查询。");
		Object[] values = {new Integer(40)};
		List personList2 = jt.query("select * from person_test where p_age > ?" , values ,new RowMapper()
		{
			public Object mapRow(ResultSet rs, int rowNum) throws SQLException
			{
				Person p = new Person();
				p.setName(rs.getString(2));
				p.setAge(rs.getInt(3));
				return p;
			}
		});
		for(Iterator it = personList2.iterator();it.hasNext();)
		{
			System.out.println(it.next());
		}

	}
}