需求：

需要获取域名的whois

实现：

依赖：

    	
     
      commons-net
     	
     
      commons-net
     	
     
      3.3
     
    

代码：

public String getWhois(String domain) {	String whois = StringUtils.EMPTY;	try {		String server = "";		final int index;		String tld = (domain == null || (index = domain.lastIndexOf('.') + 1) < 1) ? domain				: (index < (domain.length())) ? domain.substring(index)						: "";		if ("com".equals(tld)) {			server = "whois.verisign-grs.com";		} else if ("net".equals(tld)) {			server = "whois.verisign-grs.com";		} else if ("org".equals(tld)) {			server = "whois.pir.org";		} else if ("cn".equals(tld)) {			server = "whois.cnnic.cn";		} else if ("jp".equals(tld)) {			server = "whois.jprs.jp";		} else if ("kr".equals(tld)) {			server = "whois.kr";		}		WhoisClient wc = new WhoisClient();		wc.connect(server, 43);		whois = wc.query(domain);		if (wc.isConnected()) {			wc.disconnect();		}	} catch (Exception e) {		LOGGER.warn("getWhois:" + domain + " exception:" + e.getMessage());	}	return whois;}