SQLServer2005+MySql+Oracle三种数据库连接池的配置完结篇

//**本篇介绍了三种数据库SQLServer2005，MySql，Oracle三种数据库连接池的配置

 *在配置前请确保tomcat的lib中已经导入所有的那种数据库驱动包

 */

<?xml version='1.0' encoding='utf-8'?>

<Context>

    <!-- Default set of monitored resources -->

    <WatchedResource>WEB-INF/web.xml</WatchedResource>

    <!-- Uncomment this to disable session persistence across Tomcat restarts -->

    <!--

    <Manager pathname="" />

    -->

 

    <!-- Uncomment this to enable Comet connection tacking (provides events

         on session expiration as well as webapp lifecycle) -->

    <!--

    <Valve className="org.apache.catalina.valves.CometConnectionManagerValve" />

    -->

                  <!--MySql数据库专用-->

              <Resource name="jdbc/mysqlds"

                                       auth="Container"

                                       type="javax.sql.DataSource"

                                       maxActive="100"

                                       maxIdle="30"

                                       maxWait="10000"

                                       username="root"

                                       password="jakeyouxiang"

                                       driverClassName="com.mysql.jdbc.Driver"

                                       url="jdbc:mysql://127.0.0.1/training"/>

                                      

               <!--SQLServer2005数据库专用-->

               <Resource name="jdbc/sqlds"

                               auth="Container"

                               type="javax.sql.DataSource"

                               maxActive="100"

                               maxIdle="30"

                               maxWait="10000"

                               username="sa"

                               password="jakeyouxiang"

                                       driverClassName="com.microsoft.sqlserver.jdbc.SQLServerDriver"

                               url="jdbc:sqlserver://127.0.0.1:1433;databasename=blog"/>

 

 

                                      

                  <!--MySql数据库专用-->

               <Resource name="jdbc/oracleds"

                                       auth="Container"

                                       type="javax.sql.DataSource"

                                       maxActive="100"

                                       maxIdle="30"

                                       maxWait="10000"

                                       username="root"

                                       password="jakeyouxiang"

                                       driverClassName="oracle.jdbc.driver.OracleDriver"

                                       url="jdbc:oracle:thin:@127.0.0.1:1521:ora9"/>

                 

</Context>

 

 

//数据库得到Connection的程序

package database;

 

import java.sql.*;

import javax.naming.*;

import javax.sql.*;

import java.sql.*;

 

public class DataSource{

      

       public static Connection getConnection()throws Exception{

              //以下是应用线程池的方式

              Connection cn=null;

              DataSource ds=null;

              try{

                     Context con=new InitialContext();

                     //通过con得到数据源，最后的jdbc/mysqlds根据数据库的不同而有所不同

                     ds=(DataSource)con.lookup("java:comp/env/jdbc/mysqlds");

                     cn=ds.getConnection();

              }catch(Exception e){

                     e.printStackTrace();

              }    

              return cn;

       }

}

关键词：SQLServer2005线程池，MySql线程池，Oracle线程池，各种数据库连接池，Content.xml