严重: The web application [] registered the JDBC driver [com.microsoft.sqlserver.jdbc.SQLServerDriver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDB

idea项目启动报如下错误, 网上的方法都试了都没用, 一直没解决, 干掉项目, 重新从svn检出就好了...坑 啊

Root WebApplicationContext: initialization completed in  ms
九月 ,  :: 上午 org.apache.catalina.core.StandardContext startInternal
严重: Error filterStart
九月 ,  :: 上午 org.apache.catalina.core.StandardContext startInternal
严重: Context [] startup failed due to previous errors
[INFO ] -- ::,:  - method:org.springframework.context.support.AbstractApplicationContext.doClose(AbstractApplicationContext.java:)
Closing Root WebApplicationContext: startup date [Fri Sep  :: GMT+: ]; root of context hierarchy
[INFO ] -- ::,:  - method:org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.stop(DefaultLifecycleProcessor.java:)
Stopping beans in phase
[INFO ] -- ::,:  - method:com.alibaba.druid.pool.DruidDataSource.close(DruidDataSource.java:)
{dataSource-} closed
[INFO ] -- ::,:  - method:com.alibaba.druid.pool.DruidDataSource.close(DruidDataSource.java:)
{dataSource-} closed
九月 ,  :: 上午 org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc
严重: The web application [] registered the JDBC driver [com.alibaba.druid.proxy.DruidDriver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
九月 ,  :: 上午 org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc
严重: The web application [] registered the JDBC driver [com.microsoft.sqlserver.jdbc.SQLServerDriver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
九月 ,  :: 上午 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
严重: The web application [] created a ThreadLocal with key of type [com.microsoft.sqlserver.jdbc.ActivityCorrelator$] (value [com.microsoft.sqlserver.jdbc.ActivityCorrelator$@d6cb102]) and a value of type [com.microsoft.sqlserver.jdbc.ActivityId] (value [65180d39-8a49-4f34-81bb-8276a848669e-]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
[-- ::,] Artifact PPMSWEB:war exploded: Error during artifact deployment. See server log for details.