private Connection getConnection()
    throws SQLException
  {
  //聲明初始化上下文  
    InitialContext initCtx = null;
    try {
      initCtx = new InitialContext();
      //查找數據源
      DataSource ds = (javax.sql.DataSource)
        initCtx.lookup("java:comp/env/jdbc/demoPool");
      //返回數據源連接  
      return ds.getConnection();
    } catch(NamingException ne) {
    //有異常  
      System.out.println("UNABLE to get a connection from demoPool!");
      System.out.println("Please make sure that you have setup the connection pool properly");
      throw new EJBException(ne);
    } finally {
      try {
        if(initCtx != null) initCtx.close();
      } catch(NamingException ne) {
        System.out.println("Error closing context: " + ne);
        throw new EJBException(ne);
      }
    }
  }

<?xml version="1.0"?>

<!DOCTYPE weblogic-ejb-jar PUBLIC '-//BEA Systems, Inc.//DTD WebLogic 5.1.0 EJB//EN'
 'http://www.bea.com/servers/wls510/dtd/weblogic-ejb-jar.dtd'>

<weblogic-ejb-jar>
    <weblogic-enterprise-bean>
      <ejb-name>beanManaged</ejb-name>
      <caching-descriptor>
  <max-beans-in-cache>100</max-beans-in-cache>
      </caching-descriptor>
      <reference-descriptor>

        <resource-description>
         <res-ref-name>
          jdbc/demoPool
         </res-ref-name>
         <jndi-name>
          jdbc/examples-dataSource-demoPool
         </jndi-name>
        </resource-description>

      </reference-descriptor>

      <jndi-name>beanManaged.AccountHome</jndi-name>
    </weblogic-enterprise-bean>
  </weblogic-ejb-jar>

<?xml version="1.0"?>

<!DOCTYPE ejb-jar PUBLIC '-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 1.1//EN'
'http://java.sun.com/j2ee/dtds/ejb-jar_1_1.dtd'>

<ejb-jar>
    <enterprise-beans>
      <entity>
  <ejb-name>beanManaged</ejb-name>
  <home>AccountHome</home>
  <remote>Account</remote>
  <ejb-class>AccountBean</ejb-class>
  <persistence-type>Bean</persistence-type>
  <prim-key-class>java.lang.String</prim-key-class>
  <reentrant>False</reentrant>

        <resource-ref>
         <res-ref-name>jdbc/demoPool</res-ref-name>
         <res-type>javax.sql.DataSource</res-type>
         <res-auth>Container</res-auth>
        </resource-ref>

      </entity>
    </enterprise-beans>
    <assembly-descriptor>
      <container-transaction>
  <method>
    <ejb-name>beanManaged</ejb-name>
    <method-intf>Remote</method-intf>
    <method-name>*</method-name>
  </method>
  <trans-attribute>Required</trans-attribute>
      </container-transaction>
    </assembly-descriptor>
  </ejb-jar>

hzb wrote:
用"java:comp/env/jdbc/exmples-dataSource-demoPool "試了還是不行﹐