INFO: Illegal access: this web application instance has been stopped already. Could not load com.mchange.v2.c3p0.impl.PoolBackedDataSourceBaseBeanInfo. 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.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1743)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1701)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:266)
at com.sun.beans.finder.ClassFinder.findClass(ClassFinder.java:103)
at com.sun.beans.finder.InstanceFinder.instantiate(InstanceFinder.java:93)
at com.sun.beans.finder.InstanceFinder.find(InstanceFinder.java:66)
at java.beans.Introspector.findExplicitBeanInfo(Introspector.java:436)
at java.beans.Introspector.<init>(Introspector.java:386)
at java.beans.Introspector.getBeanInfo(Introspector.java:250)
at java.beans.Introspector.<init>(Introspector.java:395)
at java.beans.Introspector.getBeanInfo(Introspector.java:250)
at java.beans.Introspector.<init>(Introspector.java:395)
at java.beans.Introspector.getBeanInfo(Introspector.java:250)
at java.beans.Introspector.getBeanInfo(Introspector.java:212)
at com.mchange.v2.beans.BeansUtils.extractAccessiblePropertiesToMap(BeansUtils.java:349)
at com.mchange.v2.beans.BeansUtils.appendPropNamesAndValues(BeansUtils.java:324)
at com.mchange.v2.c3p0.ComboPooledDataSource.toString(ComboPooledDataSource.java:539)
at java.lang.String.valueOf(String.java:2854)
at java.lang.StringBuffer.append(StringBuffer.java:232)
at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.assertCpds(AbstractPoolBackedDataSource.java:447)
at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getPoolMan
项目部署后报这样的错,解决的方法是:
在c3p0数据连接池配置中加上destroy-method="close"

本文介绍了一种常见的c3p0数据连接池加载失败的问题,并提供了解决方案,在配置文件中添加destroy-method=close来避免非法访问异常。
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