1.需要Tomcat6.0，Oracle的JDBC驱动程序包（放在Tomcat/lib下）：
ojdbc14.jar(Oracle10g为例)：
JDK1.4以后ojdbc14.连接Oracle数据库的驱动。
JDK1.4之前用class12.jar连接Oracle数据库的驱动。
2.配置tomcat下的conf下的context.xml文件,在之间添加连接池如下:
<?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" />
-->
<Resource
name="jdbc/test"
auth="Container"
type="javax.sql.DataSource"
driverClassName="oracle.jdbc.driver.OracleDriver"
url="jdbc:oracle:thin:@localhost:1521:orcl"
username="wangyj"
password="wangyj"
maxActive="20"
maxIdle="2"
maxWait="-1"/>
</Context>
3.配置你的应用下的web.xml中的之间加
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<resource-ref>
<description>DB Connection</description>
<res-ref-name>jdbc/test</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
4.大功告成,不用在原来的server.xml里面配置了,下面就可以编写测试程序了,这个网上就很多了,主要的就上面,当然要把连接驱动程序都放到tomcat6下的lib下面.测试代码如下:
<!doctype html public "-//w3c//dtd html 4.0 transitional//en"
"http://www.w3.org/TR/REC-html40/strict.dtd">
<%@ page import="java.sql.*"%>
<%@ page import="javax.sql.*"%>
<%@ page import="javax.naming.*"%>
<%@ page session="false" %>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<%
out.print("MyTest");
DataSource ds = null;
try{
Context initCtx = new InitialContext();
Context envCtx = (Context) initCtx.lookup("java:comp/env");
ds = (DataSource) envCtx.lookup("jdbc/test");
Connection conn = ds.getConnection();
Statement stmt = conn.createStatement();
String strSql = " select * from dual";
ResultSet rs = stmt.executeQuery(strSql);
while(rs.next()){
out.println("<br/>");
out.print(rs.getString(1));
out.println("<br/>");
out.println("Test Success");
out.println("<br/>");
}
}
catch(Exception ex){
out.print("Exception is :"+ex.getMessage());
ex.printStackTrace();
}
%>