tomcat中对应项目的xml文件配置为：
<?xml version="1.0" encoding="UTF-8"?>
<Context path="/Village" docBase="D:\Workspaces\MyEclipse 10\webproject\Village\WebRoot" reloadable= "true" privileged="true">
<Resource name="jdbc/village" auth="Container"
type="com.mchange.v2.c3p0.ComboPooledDataSource"
factory="org.apache.naming.factory.BeanFactory"
driverClass="com.mysql.jdbc.Driver"
jdbcUrl="jdbc:mysql://localhost:3306/village"
user="root"
password="0510"
minPoolSize="10"
maxPoolSize="200"
maxIdleTime="1000"
idleConnectionTestPeriod="10"
initialPoolSize="5"
/>
</Context>
spring中引入数据源配置如下：
<bean id="dataSource" class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName"><value>java:comp/env/jdbc/village</value></property>
</bean>
项目刚刚运行时没有问题，但是过一段时间后就会不停的报如下错误：
Illegal access: this web application instance has been stopped already. Could not load com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask. The eventual following stack trace is caused by an error thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access, and has no functional impact.
java.lang.IllegalStateException
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1612)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571)
at com.mchange.v2.resourcepool.BasicResourcePool.destroyResource(BasicResourcePool.java:980)
at com.mchange.v2.resourcepool.BasicResourcePool.removeResource(BasicResourcePool.java:1406)
at com.mchange.v2.resourcepool.BasicResourcePool.removeResource(BasicResourcePool.java:1378)
at com.mchange.v2.resourcepool.BasicResourcePool.cullExpired(BasicResourcePool.java:1462)
at com.mchange.v2.resourcepool.BasicResourcePool.access$1900(BasicResourcePool.java:32)
at com.mchange.v2.resourcepool.BasicResourcePool$CullTask.run(BasicResourcePool.java:1937)
at java.util.TimerThread.mainLoop(Unknown Source)
at java.util.TimerThread.run(Unknown Source)
Exception in thread "Timer-1" java.lang.NoClassDefFoundError: com/mchange/v2/resourcepool/BasicResourcePool$1DestroyResourceTask
at com.mchange.v2.resourcepool.BasicResourcePool.destroyResource(BasicResourcePool.java:980)
at com.mchange.v2.resourcepool.BasicResourcePool.removeResource(BasicResourcePool.java:1406)
at com.mchange.v2.resourcepool.BasicResourcePool.removeResource(BasicResourcePool.java:1378)
at com.mchange.v2.resourcepool.BasicResourcePool.cullExpired(BasicResourcePool.java:1462)
at com.mchange.v2.resourcepool.BasicResourcePool.access$1900(BasicResourcePool.java:32)
at com.mchange.v2.resourcepool.BasicResourcePool$CullTask.run(BasicResourcePool.java:1937)
at java.util.TimerThread.mainLoop(Unknown Source)
at java.util.TimerThread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1720)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571)
... 8 more
tomcat的lib中已经添加了c3p0-0.9.2.1.jar 包
Caused by: java.lang.ClassNotFoundException: com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask
没发现，但是我建议你重新配置一下tomcat里的xml配置，尤其是Myeclipse 10 ,这种目录中间带空格，最好不要有，不见的碍事，但是有时候
会有问题
不要用这种落后的连接池了。看看这种吧（HikariCP）：http://blog.csdn.net/clementad/article/details/46928621
不要用这种落后的连接池了。看看这种吧（HikariCP）：http://blog.csdn.net/clementad/article/details/46928621