请问我这下面这句注册驱动是正确的吗??
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Driver jdbcdriver = (Driver) Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance();
      DriverManager.registerDriver(jdbcdriver);
      conn = DriverManager.getConnection("jdbc:microsoft:sqlserver://servername:1433;databaseName=OrderDB","sa", "ok");
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