1）TOMCAT <Context></Context>中配置 <ResourceParams>节，其中name="jdbc/dataSource"
就是JNDI名
2）JAVA代码调用
InitialContext ctx=new InitialContext();
Context envCtx = (Context)ctx.lookup("java:comp/env");
DataSource ds=(DataSource)envCtx.lookup("jdbc/dataSource");
conn = ds.getConnection();
<ResourceParams name="jdbc/dataSource">
<parameter>
<name>factory</name>
<value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
</parameter>
<!-- Maximum number of dB connections in pool. Make sure you
configure your mysqld max_connections large enough to handle
all of your db connections. Set to 0 for no limit.
-->
<parameter>
<name>maxActive</name>
<value>100</value>
</parameter>
<!-- Maximum number of idle dB connections to retain in pool.
Set to 0 for no limit.
-->
<parameter>
<name>maxIdle</name>
<value>30</value>
</parameter>
<!-- Maximum time to wait for a dB connection to become available
in ms, in this example 10 seconds. An Exception is thrown if
this timeout is exceeded. Set to -1 to wait indefinitely.
-->
<parameter>
<name>maxWait</name>
<value>10000</value>
</parameter>
<!-- MySQL dB username and password for dB connections -->
<parameter>
<name>username</name>
<value>ZLGL</value>
</parameter>
<parameter>
<name>password</name>
<value>ZLGL</value>
</parameter>
<!-- Class name for mm.mysql JDBC driver -->
<parameter>
<name>driverClassName</name>
<value>oracle.jdbc.driver.OracleDriver</value>
</parameter>
<!-- The JDBC connection url for connecting to your MySQL dB.
The autoReconnect=true argument to the url makes sure that the
mm.mysql JDBC Driver will automatically reconnect if mysqld closed the
connection. mysqld by default closes idle connections after 8 hours.-->
<parameter>
<name>url</name>
<value>jdbc:oracle:thin:ZLGL/ZLGL@192.168.0.166:1521:ZLGL</value>
</parameter>
</ResourceParams>