Java BoneCP JDBC接続プール

package com.hh.util;

import java.sql.Connection;
import java.sql.SQLException;

import org.apache.log4j.Logger;

import com.jolbox.bonecp.BoneCP;
import com.jolbox.bonecp.BoneCPConfig;

/**
 * 
 *     (Project name):MySQLConnectonPool
 * <p>
 *     (Package name):com.lixunhui.util
 * <p>
 *     (Class name):ConnectionPool
 * <p>
 *    (Description):
 * <p>
 *     (Author) ：[email protected]
 * <p>
 *     (Create Date)：2013-3-30   1:58:35
 * <p>
 *    ：hh
 * <p>
 *     ：2013-3-30   1:58:35
 * <p>
 *     ：
 * <p>
 *     (Version): @version 1.0
 */
public class ConnectionPool {
	static Logger log=Logger.getLogger(ConnectionPool.class);
	private static BoneCP connectionPool;
	/**
	 *        Connection
	 * 
	 * @Author [email protected]
	 * @Description
	 * @return
	 */
	
	public static Connection getConnection() {
		Connection connection = null;
		int totalConnection=0;
		int freeConnection=0;
		int busyConnection=0;
		
		if(null==connectionPool){
			log.debug("         ,               ");
			String username = ResourcesProp.getValue("username");
			String password = ResourcesProp.getValue("password");
			String url = ResourcesProp.getValue("url");
			String driver = ResourcesProp.getValue("driver");
			try {
				Class.forName(driver);
				BoneCPConfig config = new BoneCPConfig();
				//   URL
				config.setJdbcUrl(url);
				//      
				config.setUsername(username);
				//     
				config.setPassword(password);
				//   60              
				config.setIdleConnectionTestPeriod(60);
				//         
				config.setIdleMaxAge(240);
				//             
				config.setMaxConnectionsPerPartition(100);
				//             
				config.setMinConnectionsPerPartition(5);
				//         ，          
				config.setAcquireIncrement(5);
				config.setReleaseHelperThreads(10);
				config.setPartitionCount(3);
				connectionPool = new BoneCP(config);
				connection = connectionPool.getConnection();
				totalConnection=connectionPool.getTotalCreatedConnections();
				freeConnection=connectionPool.getTotalFree();
				busyConnection=connectionPool.getTotalLeased();
				log.debug("              ,    "+totalConnection+"     "
						+freeConnection+"   "+busyConnection);
			} catch (Exception e) {
				log.error("                ,    "+totalConnection+"     "
						+freeConnection+"   "+busyConnection, e);
				e.printStackTrace();
			}
		}else{
			log.debug("        ,            ");
			try {
				connection=connectionPool.getConnection();
				totalConnection=connectionPool.getTotalCreatedConnections();
				freeConnection=connectionPool.getTotalFree();
				busyConnection=connectionPool.getTotalLeased();
				log.debug("              ,    "+totalConnection+"     "
						+freeConnection+"   "+busyConnection);
			} catch (SQLException e) {
				log.error("              ",e);
				e.printStackTrace();
			}
		}
		return connection;
	}
}