从DNS获取完整的区域记录,DNSJava不会返回所有记录

下午好

我正在进行网络发现工作,需要获取一个域的所有记录。当我使用DNSJava时,它不是完整的一套。CNAME不存在,也不是所有的TXT记录或A记录。

有更好的办法吗?

这是我的代码:

    package iMCDNS;
    import java.util.Hashtable;

    import javax.naming.Context;
    import javax.naming.NamingEnumeration;
    import javax.naming.directory.Attribute;
    import javax.naming.directory.Attributes;
    import javax.naming.directory.DirContext;
    import javax.naming.directory.InitialDirContext;

    import org.xbill.DNS.Lookup;
    import org.xbill.DNS.Record;
    import org.xbill.DNS.Type;

    public class iMCDNS {

    public static void main(String[] args) {

        System.out.println("Running iMCDNS");

        try {

            //this returned no records

//          DirContext ctx = new InitialDirContext(env);
//          Attributes atts = ctx.getAttributes("iditsecurity.com", new String[] {"CNAME"});
//          
//          System.out.println("Attributes size: " + atts.size());
//
//          NamingEnumeration<? extends Attribute> e = atts.getAll();
//          
//          
//          while(e.hasMore()) {
//              System.out.println(e.next().get());
//          }

            //this also returns no CNAME records
            Record[] rs = new Lookup("iditsecurity.com", Type.ANY).run();

            if (rs!=null)
            {
                int javaDNSLen = rs.length;

                for (int i = 0;i < javaDNSLen; i++)
                {
                    System.out.println("record: " + rs[i].toString());
                }

            } else {
                System.out.println("No records found");
            }

        } catch (Exception ex) {

            System.out.println("Exception occurred: " + ex.toString());
        }



    }




    }

结果显示: 应该有2个A记录,4个CNAME和5个TXT记录。。。

Running iMCDNS
record: iditsecurity.com.   4503    IN  TXT "google-site-verification=VvXfVc-hr0dK3pzjc3yiAaDsK-tlFAMX7Xt3soYXByc"
record: iditsecurity.com.   4503    IN  TXT "google-site-verification=8W17El_6uLvJ0WLxEsgIKt9hKRPuz6yN9U_ke9l0i7E"
record: iditsecurity.com.   4360    IN  MX  10 mx1.netsolmail.net.