Tomcat 使用 c3p0连接池

Tomcat 中Jndi是使用Tomcat自带的连接池，由于客户要求，抛弃Tomcat自带的连接池。使用c3p0 。经过几个小时调试，解决方案如下：

环境：Tomcat 6

下面来看Jndi 与 c3p0 结合：
下载地址：http://nchc.dl.sourceforge.net/sourceforge/
c3p0/c3p0c3p0-0.9.0.4.bin.zip
把 c3p0-0.9.0.4.jar 放到应用服务的%tomcat6%/lib目录下。如：
1.在context.xml中<Context></Context>内加<Resource />，完整的示例：

<?xmlversion=
'1.0'
encoding=
'utf-8'
?>
<Context>

<WatchedResource>WEB-INF/web.xml</WatchedResource>
<!--下面注释部分为使用jndi+tomcat自带的连接池-->
<!--<Resourcename="jdbc/ctitc"
type=
"javax.sql.DataSource"
username="business"
password=
"ctitc"
driverClassName=
"oracle.jdbc.driver.OracleDriver"
url=
"jdbc:oracle:thin:@127.0.0.1:1521:FJTDC"
maxIdle="30"
maxWait=
"5000"
maxActive=
"100"
/>
-->
<!--下面注释部分为使用jndi+c3p0-->
<Resourcename="jdbc/ctitc"
type="com.mchange.v2.c3p0.ComboPooledDataSource"
maxPoolSize="50"
minPoolSize=
"2"
acquireIncrement=
"2"
factory="org.apache.naming.factory.BeanFactory"
user="user"
password=
""
driverClass="oracle.jdbc.driver.OracleDriver"
jdbcUrl="jdbc:oracle:thin:@127.0.0.1:1521:ORCL"
/>

</Context>

<?xml version='1.0' encoding='utf-8'?>
<Context>

<WatchedResource>WEB-INF/web.xml</WatchedResource>
<!-- 下面注释部分为使用jndi+tomcat自带的连接池-->
<!--<Resource name="jdbc/ctitc" type="javax.sql.DataSource"
	username="business" password="ctitc"			  driverClassName="oracle.jdbc.driver.OracleDriver" url="jdbc:oracle:thin:@127.0.0.1:1521:FJTDC"
maxIdle="30" maxWait="5000"  maxActive="100"/>
	-->	
	<!-- 下面注释部分为使用jndi+c3p0-->
 	<Resource name="jdbc/ctitc" 
			type="com.mchange.v2.c3p0.ComboPooledDataSource"
			maxPoolSize="50" minPoolSize="2" acquireIncrement="2"
			factory="org.apache.naming.factory.BeanFactory"
			user="user" password=""
			driverClass="oracle.jdbc.driver.OracleDriver"
			jdbcUrl="jdbc:oracle:thin:@127.0.0.1:1521:ORCL"
			/>
			
</Context>

2.在web.xml添加：

<resource-ref>
<description>DBConnection</description>
<res-ref-name>jdbc/ctitc</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>

  <resource-ref>
      <description>DB Connection</description>
      <res-ref-name>jdbc/ctitc</res-ref-name>
      <res-type>javax.sql.DataSource</res-type>
      <res-auth>Container</res-auth>
  </resource-ref>