java项目中外网访问内网数据库的问题
项目写好了在内网测试OK，数据库连接代码如下
private String url="jdbc:sqlserver://192.168.127.243:1433;DatabaseName=CMD";
private String username="***";
private String password="***";
private Connection con=null;
private Statement sta=null;
private ResultSet rs=null;
