（java入门）Apache的SharedPoolDataSource例子

package net.tianyu.sample;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;

import javax.sql.DataSource;

import org.apache.commons.dbcp.cpdsadapter.DriverAdapterCPDS;
import org.apache.commons.dbcp.datasources.SharedPoolDataSource;
import org.springframework.jdbc.datasource.DriverManagerDataSource;

public class TestDataSouce extends DriverManagerDataSource {

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

		TestDataSouce test = new TestDataSouce();
		DataSource dataSource = test.getDataSouce();
		int i = 0;
		while (true) {
			try {
				i++;
				Connection con = dataSource.getConnection();
				Statement stmt = con.createStatement(
						ResultSet.TYPE_SCROLL_SENSITIVE, 
						ResultSet.CONCUR_READ_ONLY);
				stmt.executeQuery("SELECT * FROM T_USER");
				System.out.println(i);
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
	}

	public DataSource getDataSouce() throws Exception {

		DataSource dataSource_ = null;

		DriverAdapterCPDS ds = new DriverAdapterCPDS();
		ds.setDriver("com.microsoft.sqlserver.jdbc.SQLServerDriver");
		ds.setUrl("jdbc:sqlserver://127.0.0.1:1433;DatabaseName=TIANYU-DB");
		ds.setUser("sa");
		ds.setPassword("tianyu");
		ds.setPoolPreparedStatements(false);

		SharedPoolDataSource tds = new SharedPoolDataSource();
		tds.setConnectionPoolDataSource(ds);
		tds.setMaxActive(20);
		tds.setMaxWait(1000);
		tds.setMaxIdle(8);

		dataSource_ = tds;

		return dataSource_;
	}
}