java代理实现爬取代理IP的示例

<dependency>  <groupId>com.alibaba</groupId>  <artifactId>fastjson</artifactId>  <version>1.2.28</version></dependency><dependency>  <groupId>org.jsoup</groupId>  <artifactId>jsoup</artifactId>  <version>1.10.2</version></dependency>

package com.tuniu.fcm.facade.IPProxy;import com.alibaba.fastjson.JSONObject;import org.jsoup.Jsoup;import org.jsoup.nodes.Document;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import java.util.regex.Matcher;import java.util.regex.Pattern;/** * 获取代理IP，需要 * com.alibaba.fastjson.JSONObject以及Jsoup */public class ProxyCralwerUnusedVPN {  ThreadLocal<Integer> localWantedNumber = new ThreadLocal<Integer>();  ThreadLocal<List<ProxyInfo>> localProxyInfos = new ThreadLocal<List<ProxyInfo>>();  public static void main(String[] args) {    ProxyCralwerUnusedVPN proxyCrawler = new ProxyCralwerUnusedVPN();    /**     * 想要获取的代理IP个数，由需求方自行指定。（如果个数太多，将导致返回变慢）     */    proxyCrawler.startCrawler(1);  }  /**   * 暴露给外部模块调用的入口   * @param wantedNumber 调用方期望获取到的代理IP个数   */  public String startCrawler(int wantedNumber) {    localWantedNumber.set(wantedNumber);    kuaidailiCom("http://www.xicidaili.com/nn/", 15);    kuaidailiCom("http://www.xicidaili.com/nt/", 15);    kuaidailiCom("http://www.xicidaili.com/wt/", 15);    kuaidailiCom("http://www.kuaidaili.com/free/inha/", 15);    kuaidailiCom("http://www.kuaidaili.com/free/intr/", 15);    kuaidailiCom("http://www.kuaidaili.com/free/outtr/", 15);    /**     * 构造返回数据     */    ProxyResponse response = new ProxyResponse();    response.setSuccess("true");    Map<String, Object> dataInfoMap = new HashMap<String, Object>();    dataInfoMap.put("numFound", localProxyInfos.get().size());    dataInfoMap.put("pageNum", 1);    dataInfoMap.put("proxy", localProxyInfos.get());    response.setData(dataInfoMap);    String responseString = JSONObject.toJSON(response).toString();    System.out.println(responseString);    return responseString;  }  private void kuaidailiCom(String baseUrl, int totalPage) {    String ipReg = "//d{1,3}//.//d{1,3}//.//d{1,3}//.//d{1,3} //d{1,6}";    Pattern ipPtn = Pattern.compile(ipReg);    for (int i = 1; i < totalPage; i++) {      if (getCurrentProxyNumber() >= localWantedNumber.get()) {        return;      }      try {        Document doc = Jsoup.connect(baseUrl + i + "/")            .header("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8")            .header("Accept-Encoding", "gzip, deflate, sdch")            .header("Accept-Language", "zh-CN,zh;q=0.8,en;q=0.6")            .header("Cache-Control", "max-age=0")            .header("User-Agent", "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36")            .header("Cookie", "Hm_lvt_7ed65b1cc4b810e9fd37959c9bb51b31=1462812244; _gat=1; _ga=GA1.2.1061361785.1462812244")            .header("Host", "www.kuaidaili.com")            .header("Referer", "http://www.kuaidaili.com/free/outha/")            .timeout(30 * 1000)            .get();        Matcher m = ipPtn.matcher(doc.text());        while (m.find()) {          if (getCurrentProxyNumber() >= localWantedNumber.get()) {            break;          }          String[] strs = m.group().split(" ");          if (checkProxy(strs[0], Integer.parseInt(strs[1]))) {            System.out.println("获取到可用代理IP/t" + strs[0] + "/t" + strs[1]);            addProxy(strs[0], strs[1], "http");          }        }      } catch (Exception e) {        e.printStackTrace();      }    }  }  private static boolean checkProxy(String ip, Integer port) {    try {      //http://1212.ip138.com/ic.asp 可以换成任何比较快的网页      Jsoup.connect("http://1212.ip138.com/ic.asp")          .timeout(2 * 1000)          .proxy(ip, port)          .get();      return true;    } catch (Exception e) {      return false;    }  }  private int getCurrentProxyNumber() {    List<ProxyInfo> proxyInfos = localProxyInfos.get();    if (proxyInfos == null) {      proxyInfos = new ArrayList<ProxyInfo>();      localProxyInfos.set(proxyInfos);      return 0;    }    else {      return proxyInfos.size();    }  }  private void addProxy(String ip, String port, String protocol){    List<ProxyInfo> proxyInfos = localProxyInfos.get();    if (proxyInfos == null) {      proxyInfos = new ArrayList<ProxyInfo>();      proxyInfos.add(new ProxyInfo(ip, port, protocol));    }    else {      proxyInfos.add(new ProxyInfo(ip, port, protocol));    }  }}class ProxyInfo {  private String userName = "";  private String ip;  private String password = "";  private String type;  private String port;  private int is_internet = 1;  public ProxyInfo(String ip, String port, String type) {    this.ip = ip;    this.type = type;    this.port = port;  }  public String getUserName() {    return userName;  }  public void setUserName(String userName) {    this.userName = userName;  }  public String getIp() {    return ip;  }  public void setIp(String ip) {    this.ip = ip;  }  public String getPassword() {    return password;  }  public void setPassword(String password) {    this.password = password;  }  public String getType() {    return type;  }  public void setType(String type) {    this.type = type;  }  public String getPort() {    return port;  }  public void setPort(String port) {    this.port = port;  }  public int getIs_internet() {    return is_internet;  }  public void setIs_internet(int is_internet) {    this.is_internet = is_internet;  }}class ProxyResponse {  private String success;  private Map<String, Object> data;  public String getSuccess() {    return success;  }  public void setSuccess(String success) {    this.success = success;  }  public Map<String, Object> getData() {    return data;  }  public void setData(Map<String, Object> data) {    this.data = data;  }}