Java实现C段域名IP采集

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package net.ltan.bbs.util;import java.util.ArrayList;import java.util.List;import java.util.regex.Matcher;import java.util.regex.Pattern;public class DomainUtil {        static Pattern urlMatcher = Pattern.compile("(http|ftp|https):\\/\\/[\\w\\-_]+(\\.[\\w\\-_]+)+([\\w\\-\\.,@?^=%&:/~\\+#]*[\\w\\-\\@?^=%&/~\\+#])?");// 抓网址        /**         * 返回c段Ip list         *          * @param s         * @param e         * @return         */        public static List<String> createCIp(String s, String e) {                String[] sarr = s.split("\\.");                String[] earr = e.split("\\.");                List<String> ip = new ArrayList<String>();                if (Integer.parseInt(earr[2]) - Integer.parseInt(sarr[2]) > -1) {                        for (int i = Integer.parseInt(sarr[2]); i < Integer                                        .parseInt(earr[2]) + 1; i++) {                                for (int j = 1; j < 256; j++) {                                        // ip.add(sarr[0]+"."+sarr[1]+"."+i+"."+j);                                        System.out.println("http://sameip.org/ip/" + sarr[0] + "."+ sarr[1] + "." + i + "." + j);                                        getDomain(SendHttpRequest.sendGetRequest("http://sameip.org/ip/" + sarr[0]+ "." + sarr[1] + "." + i + "." + j));                                }                        }                }                return ip;        }        public static void get(){                getDomain(SendHttpRequest.sendGetRequest("http://sameip.org/ip/vip.qq.com"));        }                public static void getDomain(String sourceCode) {                String urlS = "<table cellspacing=\"1\" width=\"100%\">";                if (sourceCode.indexOf(urlS) != -1) {                        String urlE = "</table>";                        sourceCode = sourceCode.substring(sourceCode.indexOf(urlS)+ urlS.length(), sourceCode.indexOf(urlE));                        Matcher matcher = urlMatcher.matcher(sourceCode);                        while(matcher.find()){                                System.out.println(matcher.group());                        }                }        }        public static void main(String[] args) {                List<String> ip = createCIp("113.10.245.23", "113.10.245.23");                for (int i = 0; i < ip.size(); i++) {                        System.out.println(ip.get(i));                }//                get();        }}

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发送HTTP请求采用了apahe的HttpClient：

/**         * HttpClient发送GET请求         *          * @param host         * @return         */        public static String sendGetRequest(String host) {                HttpClient httpClient = new HttpClient();                GetMethod getMethod = new GetMethod(host);                getMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER,                                new DefaultHttpMethodRetryHandler());                String responseBody = null;                try {                        int statusCode = httpClient.executeMethod(getMethod);                        if (statusCode != HttpStatus.SC_OK) {                                System.err.println(getMethod.getStatusLine());                        }                        responseBody = getMethod.getResponseBodyAsString();                } catch (HttpException e) {                        System.out.println("请求出错!");                        e.printStackTrace();                } catch (IOException e) {                        e.printStackTrace();                } finally {                        getMethod.releaseConnection();                }                return responseBody;        }

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