//使用sqljdbc4.jar包，注意驱动名称，不要写成com.microsoft.jdbc.sqlserver.SQLServerDriver了  不然会抛异常：ClassNotFoundException: com.microsoft.jdbc.sqlserver.SQLServerDriv
    private static final String driverClassName_2 = "com.microsoft.sqlserver.jdbc.SQLServerDriver";

　　//url 不要写成jdbc:microsoft:sqlserver  不然会抛异常：No suitable driver found for jdbc
    private static final String url_2 = "jdbc:sqlserver://172.24.8.110:1433;DatabaseName=nqqb_new";
jdbc:sqlserver: