web开发连接池方法

1 <resource-ref>

2        <description>DB Connection</description>
3        <res-ref-name>jdbc/mysql</res-ref-name>
4        <res-type>javax.sql.DataSource</res-type>
5        <res-auth>Container</res-auth>
6     </resource-ref>

1 <ResourceLink name="jdbc/DBPool" type="javax.sql.DataSource" global="jdbc/DBPool"/>

<Resource name="jdbc/DBPool" type="javax.sql.DataSource" password="123456"
               driverClassName="com.mysql.jdbc.Driver" maxIdle="2"
               maxWait="5000"  username="root"
               url="jdbc:mysql://127.0.0.1:3306/resourcesdb" maxActive="4"/>

<resource-ref>
     <description>DB Connection</description>
       <res-ref-name>jdbc/DBPool</res-ref-name>
       <res-type>javax.sql.DataSource</res-type>
       <res-auth>Container</res-auth>
   </resource-ref>

<Context   path=""   docBase="D:\myeclipseworkspace\jyw"  reloadable="true"   debug="0">
   </Context>