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：
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[*]
<?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：
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<resource-ref>
[*]
<description>DBConnection</description>
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<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>
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