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：

Java代码

1. <?xmlversion= '1.0' encoding= 'utf-8' ?>
2. <Context>
4. <WatchedResource>WEB-INF/web.xml</WatchedResource>
5. <!--下面注释部分为使用jndi+tomcat自带的连接池-->
6. <!--<Resourcename="jdbc/ctitc" type= "javax.sql.DataSource"
7. username="business" password= "ctitc" driverClassName= "oracle.jdbc.driver.OracleDriver" url= "jdbc:oracle:thin:@127.0.0.1:1521:FJTDC"
8. maxIdle="30" maxWait= "5000" maxActive= "100" />
9. -->
10. <!--下面注释部分为使用jndi+c3p0-->
11. <Resourcename="jdbc/ctitc"
12. type="com.mchange.v2.c3p0.ComboPooledDataSource"
13. maxPoolSize="50" minPoolSize= "2" acquireIncrement= "2"
14. factory="org.apache.naming.factory.BeanFactory"
15. user="user" password= ""
16. driverClass="oracle.jdbc.driver.OracleDriver"
17. jdbcUrl="jdbc:oracle:thin:@127.0.0.1:1521:ORCL"
18. />
20. </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：

Java代码

1. <resource-ref>
2. <description>DBConnection</description>
3. <res-ref-name>jdbc/ctitc</res-ref-name>
4. <res-type>javax.sql.DataSource</res-type>
5. <res-auth>Container</res-auth>
6. </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>