Java对域名一二级区分实现

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1.引入maven文件

   <dependency><groupId>de.malkusch.whois-server-list</groupId><artifactId>public-suffix-list</artifactId><!--<version>2.2.0</version>--><version>2.0.1</version></dependency>

 private static  PublicSuffixList suffixList = null;public DomainLevel(){PublicSuffixListFactory factory = new PublicSuffixListFactory();suffixList = factory.build();System.out.println("load data");}public int domainSplit(String domain){String  segdata =  suffixList.getPublicSuffix(domain);//后缀为null的返回-1     //域名是IP则返回-1if(segdata==null||isIp(domain)){return  -1;}//        System.out.println(segdata);String  domain_split = domain.replaceFirst("^www\\.","");//.replaceAll(segdata,"");if(domain_split.length()-segdata.length()<=1){return -1;}int domainLength = domain_split.length()-segdata.length();String domain_final = domain_split.substring(0,domainLength);//        System.out.println(domain_final);int num = appearNumber(domain_final,"\\.");if(num<=0){return -1;}
//        System.out.println(domain_one+"----");if(num>=2){return 2;}return num;}public int evaluate(String domain){int domainlevel = domainSplit(domain);return domainlevel;}public static void main(String[] args){DomainLevel dl = new DomainLevel();int level = dl.evaluate("www.baidu.com");System.out.println(level);}

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