Weblogic连接SQL Server,可以得到DataSource了，但是创建Connect失败！？？？

java.sql.SQLException: Cannot obtain connection: driverURL = jdbc:weblogic:pool:DBPool, props = {enableTwoPhaseCommit=true, jdbcTxDataSource=true, connectionPoolID=DBPool, dataSourceName=DBJNDIDemo}. Nested Exception: java.lang.RuntimeException: Failed to Generate Wrapper Class at weblogic.utils.wrapper.WrapperFactory.createWrapper(WrapperFactory.java:141) at weblogic.jdbc.wrapper.JDBCWrapperFactory.getWrapper(JDBCWrapperFactory.java:73) at weblogic.jdbc.pool.Driver.allocateConnection(Driver.java:242) at weblogic.jdbc.pool.Driver.connect(Driver.java:158) at weblogic.jdbc.jts.Driver.getNonTxConnection(Driver.java:444) at weblogic.jdbc.jts.Driver.connect(Driver.java:138) at weblogic.jdbc.common.internal.RmiDataSource.getConnection(RmiDataSource.java:298) at jsp_servlet.__linktest._jspService(__linktest.java:158) at weblogic.servlet.jsp.JspBase.service(JspBase.java:33) at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1053) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:387) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:431) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:305) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6310) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:317) at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:118) at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3622) at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2569) at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197) at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170）

找了很多地方，各种方法也试过了！ 该怎么处理？ 急！求教！