VerifyError错误

[lianxiang_64006777]

ERROR [org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/ynNote].[jsp]] - [Servlet.service() for servlet jsp threw exception]
java.lang.VerifyError: (class: com/mchange/v2/log/log4j/Log4jMLog$Log4jMLogger, method: isLoggable signature: (Lcom/mchange/v2/log/MLevel;)Z) Incompatible argument to function
at com.mchange.v2.log.log4j.Log4jMLog.getMLogger(Log4jMLog.java:52)
at com.mchange.v2.log.MLog.getLogger(MLog.java:145)
at com.mchange.v2.log.MLog.<clinit>(MLog.java:72)
at com.mchange.v2.naming.JavaBeanReferenceMaker.<clinit>(JavaBeanReferenceMaker.java:39)
at com.mchange.v2.c3p0.impl.PoolBackedDataSourceBase.<clinit>(PoolBackedDataSourceBase.java:203)

谁能告诉我为什么会报这样的异常？

[lianxiang_64006777]

import com.mchange.v2.c3p0.ComboPooledDataSource;

ComboPooledDataSource cpds = new ComboPooledDataSource();
我想new一个ComboPooledDataSource 类，但一走到ComboPooledDataSource 这个类就报上面的错，谁能告诉我怎么回事？谢谢。

[sangshusen_1988]

貌似是跟你添加的log4j jar包有问题换个别的版本的试下

[lianxiang_64006777]

我换了，也不行。