import javax.jmdns.impl.JmDNSImpl.ServiceTypeEntry; //导入依赖的package包/类
@Override
protected DNSOutgoing addAnswers(DNSOutgoing out) throws IOException {
    DNSOutgoing newOut = out;
    long now = System.currentTimeMillis();
    for (String type : this.getDns().getServiceTypes().keySet()) {
        ServiceTypeEntry typeEntry = this.getDns().getServiceTypes().get(type);
        newOut = this.addAnswer(newOut, new DNSRecord.Pointer("_services._dns-sd._udp.local.", DNSRecordClass.CLASS_IN, DNSRecordClass.NOT_UNIQUE, DNSConstants.DNS_TTL, typeEntry.getType()), now);
    }
    return newOut;
}
 

import javax.jmdns.impl.JmDNSImpl.ServiceTypeEntry; //导入依赖的package包/类
@Override
public void addAnswers(JmDNSImpl jmDNSImpl, Set<DNSRecord> answers) {
    // find matching services
    for (ServiceInfo serviceInfo : jmDNSImpl.getServices().values()) {
        this.addAnswersForServiceInfo(jmDNSImpl, answers, (ServiceInfoImpl) serviceInfo);
    }
    if (this.isServicesDiscoveryMetaQuery()) {
        for (String serviceType : jmDNSImpl.getServiceTypes().keySet()) {
            ServiceTypeEntry typeEntry = jmDNSImpl.getServiceTypes().get(serviceType);
            answers.add(new DNSRecord.Pointer("_services._dns-sd._udp.local.", DNSRecordClass.CLASS_IN, DNSRecordClass.NOT_UNIQUE, DNSConstants.DNS_TTL, typeEntry.getType()));
        }
    } else if (this.isReverseLookup()) {
        String ipValue = this.getQualifiedNameMap().get(Fields.Instance);
        if ((ipValue != null) && (ipValue.length() > 0)) {
            InetAddress address = jmDNSImpl.getLocalHost().getInetAddress();
            String hostIPAddress = (address != null ? address.getHostAddress() : "");
            if (ipValue.equalsIgnoreCase(hostIPAddress)) {
                if (this.isV4ReverseLookup()) {
                    answers.add(jmDNSImpl.getLocalHost().getDNSReverseAddressRecord(DNSRecordType.TYPE_A, DNSRecordClass.NOT_UNIQUE, DNSConstants.DNS_TTL));
                }
                if (this.isV6ReverseLookup()) {
                    answers.add(jmDNSImpl.getLocalHost().getDNSReverseAddressRecord(DNSRecordType.TYPE_AAAA, DNSRecordClass.NOT_UNIQUE, DNSConstants.DNS_TTL));
                }
            }
        }
    } else if (this.isDomainDiscoveryQuery()) {
        // FIXME [PJYF Nov 16 2010] We do not currently support domain discovery
    }
}