dbcp的销毁

使用commons-dbcp-1.2.2.jar的DataSource，发现每次动态编译后连接池中的连接不会释放，新的连接池建立有mssql多出一组连接，只有重新启动tomcat或weblogic才可以释放。

package aaplan.dbutil;



import java.io.InputStream;

import java.util.Properties;



import java.sql.*;



import javax.sql.DataSource;



import org.apache.commons.dbcp.BasicDataSourceFactory;



public class JdbcUtil {



    private static  DataSource dataSource=null;

    /**

     * @param args

     */



    public static Connection getConnection() throws SQLException {

        return dataSource.getConnection();

    }

    public  static DataSource getDataSource() {

        return dataSource;

    }

    public static void  release()  {

        if(dataSource !=null){

            try {

                ((org.apache.commons.dbcp.BasicDataSource)dataSource).close();

            } catch (SQLException e) {

                // TODO Auto-generated catch block

                e.printStackTrace();

            }

        

        }

    }

    static{

        try{

        Properties properties=new Properties();

        InputStream inputStream= JdbcUtil.class.getClassLoader().getResourceAsStream("dbcp.properties");

        properties.load(inputStream);

        inputStream.close();

        dataSource =BasicDataSourceFactory.createDataSource(properties);



        

        System.out.println(dataSource);

        }catch(Exception e){

          e.printStackTrace();

          throw new RuntimeException("JdbcUtil Init Error!");    

        

        }

        

    }



}

View Code

 

package aaplan.dbutil;



import javax.servlet.ServletContextEvent;

import javax.servlet.ServletContextListener;



/**

 * Application Lifecycle Listener implementation class DataSorceMgrListener

 *

 */

public class DataSorceMgrListener implements ServletContextListener {



    /**

     * Default constructor. 

     */

    public DataSorceMgrListener() {

        // TODO Auto-generated constructor stub

    }



    /**

     * @see ServletContextListener#contextInitialized(ServletContextEvent)

     */

    public void contextInitialized(ServletContextEvent arg0) {

        // TODO Auto-generated method stub

        System.out.println("Init context!");

        JdbcUtil.getDataSource();

    }



    /**

     * @see ServletContextListener#contextDestroyed(ServletContextEvent)

     */

    public void contextDestroyed(ServletContextEvent arg0) {

        System.out.println("Destoryed Context!");

        JdbcUtil.release();

    }

    

}

View Code

 

解决，写了个ServerContextListener,在里面的Destroyed中人工释放

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