您的类路径上有多个Microsoft JDBC驱动程序，因此，您正在与古代 MS SQL Server 2000 JDBC驱动程序连接.删除旧的(例如msutil.jar，mssqlserver.jar和msbase.jar)，仅保留sqljdbc4.jar.另外，请检查是否有比您当前使用的版本新的版本.

You have multiple Microsoft JDBC drivers on your classpath, and as a result you are connecting with the ancient MS SQL Server 2000 JDBC driver. Remove the old ones (ie msutil.jar, mssqlserver.jar and msbase.jar), and only leave sqljdbc4.jar. Also check if there is a newer version available than the one you are currently using.