Question

在tomcat中,如何去配置一个数据源?

Answer 1

在tomcat/conf/context.xml文件添加数据源即可，配置内容及位置如下所示：
<?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/mldn"
auth="Container"
type="javax.sql.DataSource"
maxActive="20"
maxIdle="5"
maxWait="10000"
username="root"
password="sa"
driverClassName="org.gjt.mm.mysql.Driver"
url="jdbc:mysql://localhost:3306/mldn" />
</Context>

Answer 2

在conf 文件夹下context.xml 文件中在</Context>之前加入
<Resource name="jdbc/shopping(自己起名字)" auth="Container"
type="javax.sql.DataSource"
driverClassName="oracle.jdbc.driver.OracleDriver"//驱动
url="jdbc:oracle:thin:@localhost:orcl"//url
username="scott"//用户名
password="tiger"//密码
maxActive="100"//最大连接数
maxIdle="30"//最小连接数
maxWait="1000"//连接等待时间
/>
这是oracle的