JNDI连接池连接Oracle数据库

今天做了一个评论的小功能，要求用JNDI连接池连接Oracle数据库，以前只是测试了是否连接的上，现在没想到一个JNDI连接池连接Oracle数据库，纠结了好久，原来都是Oracle数据库的问题，这是过失。下面介绍一下JNDI连接池连接Oracle数据库。

<?xml version='1.0' encoding='utf-8'?><!--  Licensed to the Apache Software Foundation (ASF) under one or more  contributor license agreements.  See the NOTICE file distributed with  this work for additional information regarding copyright ownership.  The ASF licenses this file to You under the Apache License, Version 2.0  (the "License"); you may not use this file except in compliance with  the License.  You may obtain a copy of the License at      http://www.apache.org/licenses/LICENSE-2.0  Unless required by applicable law or agreed to in writing, software  distributed under the License is distributed on an "AS IS" BASIS,  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either exPRess or implied.  See the License for the specific language governing permissions and  limitations under the License.--><!-- The contents of this file will be loaded for each web application --><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" />    -->--红色字体是需要根据数据库名配置<Resource name="jdbc/liuyan" auth="Container"type="javax.sql.DataSource" maxActive="100"maxIdle="30" maxWait="10000" username="epet" passWord="123456"driverClassName="oracle.jdbc.driver.OracleDriver"url="jdbc:oracle:thin:@localhost:1521:orcl"/></Context>

import java.sql.Connection;import java.sql.SQLException;import javax.naming.Context;import javax.naming.InitialContext;import javax.naming.NamingException;import javax.sql.DataSource;/**  * 文件名：JNDI.java * 描    述：这是一个数据库连接类 * 作    者：WLX * 所属项目：MyNews * JDK版本：JDK1.7  * 创建时间：2015年5月23日 下午2:54:24 **/public class JNDI {    public Connection getconn() {                Connection conn = null;        try {                        Context ctx;            ctx = new InitialContext();            //java:comp/env/为前缀            DataSource source = (DataSource)ctx.lookup("java:comp/env/jdbc/liuyan");                    Connection connection = source.getConnection();            if(connection != null){                conn = connection;            }                    } catch (NamingException e) {            e.printStackTrace();        } catch (SQLException e) {            e.printStackTrace();        }        return conn;    }}