Spring导包时候出现的怪事

我用spring mvc 作jdbc连接数据库的练习时发现老抛下面的异常，可是jdbc，dbcp，pool，logging，collections，这些包我都导进tomcat/common/lib去了，在工程里也导了，还是不行请问个位这是怎莫回事啊
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org.apache.commons.dbcp.SQLNestedException: Cannot create JDBC driver of class 'com.microsoft.jdbc.sqlserver.SQLServerDriver' for connect URL '
jdbc:microsoft:sqlserver://127.0.0.1:1433;dataBaseName=northwind
'
at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:780)
at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:540)
at com.dao.mds.selectLogin(mds.java:20)
at com.action.LoginAction.onSubmit(LoginAction.java:26)
at org.springframework.web.servlet.mvc.SimpleFormController.onSubmit(SimpleFormController.java:356)
at org.springframework.web.servlet.mvc.SimpleFormController.processFormSubmission(SimpleFormController.java:258)
at org.springframework.web.servlet.mvc.AbstractFormController.handleRequestInternal(AbstractFormController.java:249)
at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)
at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:44)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:723)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:663)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:394)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:358)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)