java ee好像因为用iBATIS框架抛错

我用的是struts2+iBATIS+spring搭建的系统。经常抛出一个Could not load com.mysql.jdbc.profiler.ProfilerEventHandlerFactory. 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.
信息: Illegal access: this web application instance has been stopped already. Could not load com.mysql.jdbc.profiler.ProfilerEventHandlerFactory. 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:1244)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
at com.mysql.jdbc.ConnectionImpl.realClose(ConnectionImpl.java:4273)
at com.mysql.jdbc.ConnectionImpl.cleanup(ConnectionImpl.java:1248)
at com.mysql.jdbc.ConnectionImpl.finalize(ConnectionImpl.java:2655)
at java.lang.ref.Finalizer.invokeFinalizeMethod(Native Method)
at java.lang.ref.Finalizer.runFinalizer(Unknown Source)
at java.lang.ref.Finalizer.access$100(Unknown Source)
at java.lang.ref.Finalizer$FinalizerThread.run(Unknown Source)

我的iBATIS是这样写的：
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE sqlMapConfig
PUBLIC "-//ibatis.apache.org//DTD SQL Map Config 2.0//EN"
"http://ibatis.apache.org/dtd/sql-map-config-2.dtd">

<sqlMapConfig>
<properties resource="com/resource/DataSourceProperties.properties"/>
<transactionManager type="JDBC" commitRequired="false">
<dataSource type="SIMPLE">
<property name="JDBC.Driver" value="${driver}"/>
<property name="JDBC.ConnectionURL" value="${url}"/>
<property name="JDBC.Username" value="${username}"/>
<property name="JDBC.Password" value="${password}"/>
</dataSource>
</transactionManager>

<!-- List the SQL Map XML files. They can be loaded from the
classpath, as they are here (com.domain.data...) -->

<sqlMap resource="com/resource/Article.xml"/>
<!-- List more here...
<sqlMap resource="com/mydomain/data/Order.xml"/>
<sqlMap resource="com/mydomain/data/Documents.xml"/>
-->

</sqlMapConfig>