1 、配置Tomcat5. 5 .X的Server.xml，在<host>下面加上：?

<Context?path= " /JNDIDemo " ?docBase= " D:\workspace\JNDIDemo\WebRoot " ?debug= " 0 " ?reloadable= " true " ?crossContext= " true " >?
<Logger?className= " org.apache.catalina.logger.FileLogger " ?prefix= " localhost_quality_log. " ?suffix= " .txt " ?timestamp= " true " />?
<Resource?
name= " jdbc/test " ?<!--?JNDI數(shù)據(jù)池名稱(chēng)?-->?
type= " javax.sql.DataSource " ?<!--?數(shù)據(jù)類(lèi)?-->?
password= " karid " ?<!--?密碼?-->?
driverClassName= " oracle.jdbc.driver.OracleDriver " ?<!--?驅(qū)動(dòng)?-->?
maxIdle= " 2 " ?<!--?最少可用lia?-->?
maxWait= " 5000 " ?<!--?最大等待時(shí)間?5秒?-->?
username= " karid " ?<!--?用戶(hù)名?-->?
url= " jdbc:oracle:thin:@127.0.0.1:1521:karid " ?
maxActive= " 4 " ?<!--?最大可用連接?-->?/>?

<ResourceParams?name= " jdbc/test " >?

<parameter>?
<name>removeAbandoned</name>?
<!--?Abandoned?DB?connections?are?removed?and?recycled?-->?
<value> true </value>?
</parameter>?
<parameter>?
<name>removeAbandonedTimeout</name>?
<!--?Use?the?removeAbandonedTimeout?parameter?to? set ?the?number?of?seconds?a?DB?connection?has?been?idle?before?it? is ?considered?abandoned.?-->?
<value> 60 </value>?
</parameter>?
<parameter>?
<name>logAbandoned</name>?
<!--?Log?a?stack?trace?of?the?code?which?abandoned?-->?
<value> false </value>?
</parameter>?

<parameter>?
<name>factory</name>?
<!--DBCP?Basic?Datasource?Factory?-->?
<value>org.apache.commons.dbcp.BasicDataSourceFactory</value>?
</parameter>?

</ResourceParams>?



2 、配置web.xml

<description>MySQL?Test?App</description>?
<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 >?

3 、JNDI使用

public ? class ?DataSourceFactory?
{?
private ? static ?DataSource?ds;?
public ? static ?DataSource?createDataSourde()?
{?
if ?(ds?==? null )?
{?
try ?
{?
Context?initContext?=? new ?InitialContext();?
if ?(initContext?==? null )?
System. out .println( " 無(wú)配置環(huán)境 " );?
Context?envContext?=?(Context)?initContext.lookup( " java:/compenv " );?
ds?=?(DataSource)?envContext.lookup( " jdbc/test " );? // 根據(jù)名稱(chēng)取得數(shù)據(jù)源?
}?
catch ?(NamingException?e)?
{?
e.printStackTrace();?
}?
}?
return ?ds;?
}?
}