java爬取携程酒店的评价信息以及eleven参数获取

本贴已经无用了，需要爬数据的可以去携程app端，未加密可以直接请求接口获取数据下面给出一个简单的思路：

访问页面https://m.ctrip.com/webapp/hotel/hoteldetail/dianping/7500321.html?&fr=detail&atime=20190510&days=1

请求地址：https://m.ctrip.com/restapi/soa2/16765/gethotelcomment?_fxpcqlniredt=09031069110301833861

带入json参数，参数可以自己去看一下：

String json = "{\"hotelId\":" + hotelId + ",\"pageIndex\":" + pageIndex + ",\"tagId\":0,\"pageSize\":10,\"groupTypeBitMap\":2,\"needStatisticInfo\":0,\"order\":0,\"basicRoomName\":\"\",\"travelType\":-1,\"head\":{\"cid\":\"09031121310402803767\",\"ctok\":\"\",\"cver\":\"1.0\",\"lang\":\"01\",\"sid\":\"8888\",\"syscode\":\"09\",\"auth\":\"\",\"extension\":[]}}";

酒店 id 和 pageIndex 传一下就行了

用httpclient 循环请求该接口然后返回字段有个

当此值为1就说明是最后一一页。爬取的时候注意让程序休眠一会。否则会可能限流以及封ip.

以下方法已经不可用

源码可以在我的资源中下载，谢谢！https://download.csdn.net/download/qq_39477018/10764634

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
import org.springframework.http.*;
import org.springframework.http.HttpMethod;import javax.script.Invocable;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;
import javax.swing.plaf.metal.OceanTheme;
import java.io.IOException;
import java.io.StringReader;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.regex.Matcher;/*** Created by Administrator on 2018/9/28.*/
public class GetHotelJudge {private static BlockingQueue<Object[]> insertqueuej= new LinkedBlockingQueue<>();//评价public static void main(String[] args) throws IOException {//入库操作可根据自己数据库设置String sql="insert into hoteljude(HOTELNAME,USERIMG,USERNAME,SCORE,GGSCORE,HOTELTYPE,CHECKINTIME,BADTYPE,JUDGETIME,JUDGEINTRO,JUDGEREPLAY,JUDGEIMG) values(?,?,?,?,?,?,?,?,?,?,?,?)";URLDemo2.insert(sql,insertqueuej);getHotel();}public static void   getHotel(){try {String hotelid="441351"; //酒店idString uri="http://hotels.ctrip.com/hotel/"+hotelid+".html";HttpClient h=new JavaHttpClient();HttpResponse  s = h.doGet(uri,null);//可以自己实现get请求链接  或者参考本人的。String hotel=s.getResponseString();Document doc=Jsoup.parse(hotel);//获取酒店信息Element e=doc.selectFirst("#J_htl_info > div.name > h2.cn_n");String hotelname=e.text();Map cookies=s.getCookies();Map head=gethead(hotelid);String even=oceanball(hotelid,head,cookies);//获取evenint currentPage=0;getEiinfo(currentPage,hotelid,"",head,even,cookies,hotelname);//获取评价信息} catch (IOException e) {e.printStackTrace();}}//获取评价信息public static void getEiinfo(int currentPage,String hotelid,String sub,Map headMap,String eleven,Map cookies, String hotelname){try {String pl = "http://hotels.ctrip.com/Domestic/tool/AjaxHotelCommentList.aspx?" +"MasterHotelID=" + hotelid + "&hotel=" + hotelid + "&NewOpenCount=0&AutoExpiredCount=0&RecordCount=2365&OpenDate=&keywordPress=1&card=-1&property=-1" +"&UserType=&productcode=&keyword=&roomName=&orderBy=2&currentPage="+currentPage+"&viewVersion=c&contyped=0" +"&eleven="+eleven+"&callback="+getcallback(15)+"&_="+System.currentTimeMillis();HttpClient h=new JavaHttpClient();HttpResponse r=h.doGet2(pl,headMap,cookies);String result=r.getResponseString();Document doc=Jsoup.parse(result);Element element= doc.selectFirst("#divCtripComment > div.comment_detail_list");//得到所有的评论信息divif(element!=null){Elements elements=element.getElementsByClass("comment_block J_asyncCmt");if(elements!=null&&elements.size()>0){for (Element e:elements){Element eltImg=e.selectFirst("div.user_info > p.head > span.img > img");String img=eltImg==null?null:eltImg.attr("src");//用户头像//System.out.println("img:"+img);Element eltName=e.selectFirst("div.user_info > p.name > span");String name=eltName==null?null:eltName.text();//用户名称//System.out.println("name:"+name);Element eltscore=e.selectFirst("div.comment_main > p > span.score > span");String score=eltscore==null?0+"":eltscore.text();//评分总分//System.out.println("score:"+score);Element eltggscore=e.selectFirst("div.comment_main > p > span.small_c");String ggscore=eltggscore==null?null:eltggscore.attr("data-value");//各个维度评分//System.out.println("ggscore:"+ggscore);Element elttype=e.selectFirst("div.comment_main > p > span.type");String type=elttype==null?null:elttype.text();//出游类型//System.out.println("type:"+type);Element elttime=e.selectFirst("div.comment_main > p > span.date");String time=elttime==null?null:elttime.text();//出游时间// System.out.println("time:"+time);Element eltbad=e.selectFirst("div.comment_main > p > a");String bad=eltbad==null?null:eltbad.text();//房型//System.out.println("bad:"+bad);Element eltdate=e.selectFirst("div.comment_main > div.comment_txt > div.comment_bar > p > span");String date=eltdate==null?null:eltdate.text().replace("发表于","");//评论时间//System.out.println("date:"+date);Element eltintro=e.selectFirst("div.comment_main > div.comment_txt > div.J_commentDetail");String intro=eltintro==null?null:eltintro.text();//评论内容System.out.println("intro:"+intro);Element eltreplay=e.selectFirst("div.comment_main > div.htl_reply > p.text");String replay=eltreplay==null?null:eltreplay.text();//酒店回复内容//System.out.println("replay:"+replay);Element picturediv=e.selectFirst("div.comment_main > div > div.comment_pic");String purl="";if(picturediv!=null){Elements picture=picturediv.getElementsByClass("pic");//评论的图集if(picture!=null&&picture.size()>0){for (Element pic:picture){Element imgs=pic.selectFirst("img.p");String url=imgs==null?null:imgs.attr("src");purl=purl+url+";";//System.out.println("url:"+url);}}}//组装成对象Object[] o=new Object[12];o[0]=hotelname;o[1]=img;o[2]=name;o[3]=score;o[4]=ggscore;o[5]=type;o[6]=time;o[7]=bad;o[8]=date;o[9]=intro;o[10]=replay;o[11]=purl;insertqueuej.add(o);//加入队列进行入库}}Elements adiv=doc.select("#divCtripComment > div.c_page_box > div > div.c_page_list.layoutfix > a");//获取分页信息的a标签int tpage=Integer.parseInt(adiv.last().text());//得到总页数的值Element cPage=doc.selectFirst("#divCtripComment > div.c_page_box > div > div.c_page_list.layoutfix > a.current");//得到当前页的a标签int cpage=Integer.parseInt(cPage.text());//得到当前页的值if (cpage+1<=tpage){//进行循环读取/* try {Thread.sleep(30000);} catch (InterruptedException e) {e.printStackTrace();}*/String even=oceanball(hotelid,headMap,cookies);//获取evengetEiinfo(cpage+1,hotelid,"",headMap,even,cookies,hotelname);//获取评价信息}}else{String even=oceanball(hotelid,headMap,cookies);//获取evengetEiinfo(currentPage,hotelid,"",headMap,even,cookies,hotelname);//获取评价信息}} catch (IOException e1) {e1.printStackTrace();}}/*** 请求头设置* @param hotelid* @return*/public static  Map gethead(String hotelid){Map map = new HashMap();map.put("Host", "hotels.ctrip.com");map.put("Accept", "*/*");map.put("Cache-Control", "max-age=0");map.put("If-Modified-Since", "Thu, 01 Jan 1970 00:00:00 GMT");map.put("Content-Type","application/x-javascript; charset=utf-8");map.put("Accept-Language", "zh-CN,zh;q=0.8");map.put("Referer", "http://hotels.ctrip.com/hotel/" + hotelid + ".html");map.put("User-Agent", "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.86 Safari/537.36");return  map;}/***  加密* @param hotelid* @return*/public static String oceanball(String hotelid,Map headMap,Map cookies){try {String callback = getcallback(15);HttpClient h=new JavaHttpClient();long currtime = System.currentTimeMillis();String oceanball = "http://hotels.ctrip.com/domestic/cas/oceanball?callback="+callback+"&_="+currtime+"";HttpResponse res=h.doGet2(oceanball,headMap,cookies);String ocean = res.getResponseString();ocean = ocean.replace("eval","JSON.stringify");ScriptEngineManager manager = new ScriptEngineManager();ScriptEngine engine = manager.getEngineByName("javascript");ocean = String.valueOf( engine.eval(ocean));ocean = ocean.replace(callback,"var eleven=" + callback);ocean = String.valueOf(engine.eval(new StringReader(ocean)));ScriptEngineManager manager1 = new ScriptEngineManager();ScriptEngine engine1 = manager1.getEngineByName("javascript");engine1.eval("var hotel_id = \""+hotelid+"\"; var site = {}; site.getUserAgent = function(){}; var Image = function(){}; var window = {}; window.document = window.document = {body:{innerHTML:\"1\"}, documentElement:{attributes:{webdriver:\"1\"}}, createElement:function(x){return {innerHTML:\"1\"}}}; var document = window.document;window.navigator = {\"appCodeName\":\"Mozilla\", \"appName\":\"Netscape\", \"language\":\"zh-CN\", \"platform\":\"Win\"}; window.navigator.userAgent = site.getUserAgent(); var navigator = window.navigator; window.location = {}; window.location.href = \"http://hotels.ctrip.com/hotel/\"+hotel_id+\".html\"; var location = window.location;" +" var navigator = {userAgent:{indexOf: function(x){return \"1\"}}, geolocation:\"1\"};var getEleven = 'zgs';  " );engine1.eval("var "+callback+" = function(a){getEleven = a;};");engine1.eval(ocean);String eleven = "";if (engine instanceof Invocable) {Invocable invocable = (Invocable) engine1;eleven = (String) invocable.invokeFunction("getEleven");//4.使用 invocable.invokeFunction掉用js脚本里的方法，第一個参数为方法名，后面的参数为被调用的js方法的入参}return eleven;} catch (IOException e) {e.printStackTrace();} catch (NoSuchMethodException e) {e.printStackTrace();} catch (ScriptException e) {e.printStackTrace();}return null;}/*** callback参数获取* @param number* @return*/public  static String getcallback(int number){String s[]={"A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"};String cal="CAS";for(int i=0;i<number;i++){int t= (int) Math.ceil(51 * Math.random());cal=cal+s[t];}return cal;}
}

get 或者post 请求代码好几个类写的比较复杂，可以直接复制使用。

import javax.net.ssl.*;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.InetSocketAddress;
import java.net.Proxy;
import java.net.URL;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;/*** @Author: liaog* @Date: 2018-08-01 13:28* @description:*/
public class JavaHttpClient extends AbstractHttpClient implements HttpClient{protected String defaultCharset = "utf-8";protected int timeout = 20000;protected boolean useProxy;protected String hostname;protected int port;public HttpResponse doRequest(HttpMethod method, String url, Map<String, String> userHeaders, InputStream data,Map<String, String> cookies) throws IOException {URL urlObject = new URL(url);HttpURLConnection urlConnection = openConnection(urlObject);if (urlObject.getProtocol().equalsIgnoreCase("https")) {HttpsURLConnection httpsURLConnection = (HttpsURLConnection) urlConnection;prepareForHttps(httpsURLConnection);}String sessionid="";if (cookies != null) {for (Map.Entry<String, String> entry : cookies.entrySet()) {//urlConnection.addRequestProperty(entry.getKey(), entry.getValue());sessionid=sessionid+entry.getKey()+"="+entry.getValue()+";";}urlConnection.addRequestProperty("Cookie", sessionid);}urlConnection.setRequestMethod(method.name());urlConnection.setConnectTimeout(timeout);urlConnection.setReadTimeout(timeout);urlConnection.setInstanceFollowRedirects(false);if (userHeaders != null) {for (Map.Entry<String, String> entry : userHeaders.entrySet()) {urlConnection.addRequestProperty(entry.getKey(), entry.getValue());}}if (data != null) {int len = data.available();urlConnection.addRequestProperty("Content-Length", String.valueOf(len));urlConnection.setDoInput(true);urlConnection.setDoOutput(true);OutputStream outputStream = urlConnection.getOutputStream();IOUtil.copyAndClose(data, outputStream);}urlConnection.setInstanceFollowRedirects( false );InputStream responseInputStream = urlConnection.getInputStream();int responseCode = urlConnection.getResponseCode();ByteArrayOutputStream bos = new ByteArrayOutputStream(64);IOUtil.copyAndClose(responseInputStream, bos);Map<String, List<String>> headers = new HashMap<String, List<String>>(urlConnection.getHeaderFields());String sessionId = "";String cookieVal = "";String key = null;Map<String,String > map=new HashMap();for(int i = 1; (key = urlConnection.getHeaderFieldKey(i)) != null; i++){//获取cookiesif(key.equalsIgnoreCase("set-cookie")){cookieVal = urlConnection.getHeaderField(i);cookieVal = cookieVal.substring(0, cookieVal.indexOf(";"));String s[]=cookieVal.split("=");map.put(s[0],s[1]);sessionId = sessionId + cookieVal + ";";System.out.println("==="+cookieVal);}}// System.out.println("session"+sessionId);String redirect=urlConnection.getHeaderField( "location" );//获得302转发地址//System.out.println("location:"+redirect);/*if(redirect!=null){doRequest(HttpMethod.GET,redirect,userHeaders,null,map);}*/return new HttpResponse(defaultCharset, responseCode, headers, bos.toByteArray(),map);}private HttpURLConnection openConnection(URL url) throws IOException {if (isUseProxy()) {return (HttpURLConnection)url.openConnection(new Proxy(Proxy.Type.HTTP, new InetSocketAddress(getHostname(), getPort())));} else {return (HttpURLConnection)url.openConnection();}}private void prepareForHttps(HttpsURLConnection httpsURLConnection) {try {SSLContext sslContext = SSLContext.getInstance("SSL");sslContext.init(null, new TrustManager[]{new AbstractHttpClient.TrustAnyTrustManager()}, secureRandom);httpsURLConnection.setSSLSocketFactory(sslContext.getSocketFactory());httpsURLConnection.setHostnameVerifier(new TrustAnyHostnameVerifier());} catch (NoSuchAlgorithmException e) {throw new RuntimeException(e);} catch (KeyManagementException e) {throw new RuntimeException(e);}}public String getDefaultCharset() {return defaultCharset;}public void setDefaultCharset(String defaultCharset) {this.defaultCharset = defaultCharset;}public int getTimeout() {return timeout;}public void setTimeout(int timeout) {this.timeout = timeout;}public boolean isUseProxy() {return useProxy;}public void setUseProxy(boolean useProxy) {this.useProxy = useProxy;}public String getHostname() {return hostname;}public void setHostname(String hostname) {this.hostname = hostname;}public int getPort() {return port;}public void setPort(int port) {this.port = port;}
}

import java.io.IOException;
import java.io.InputStream;
import java.util.Map;/*** @Author: liaogk* @Date: 2018-08-01 13:18* @description:*/
public interface HttpClient {HttpResponse doRequest(HttpMethod method, String url, Map<String, String> userHeaders, InputStream data,Map<String,String> cookies)throws IOException;byte[] doGet(String url) throws IOException;HttpResponse doGet(String url, Map<String, String> headers) throws IOException;HttpResponse doGet2(String url, Map<String, String> headers,Map<String,String> cookies) throws IOException;HttpResponse dopost(String url, Map<String, String> headers,InputStream data,Map<String,String> cookies) throws IOException;}

/*** @Author: liaogk* @Date: 2018-08-01 13:22* @description:*/
public enum  HttpMethod {POST, GET, PUT, DELETE, HEADER, OPTIONS;
}

import java.io.UnsupportedEncodingException;
import java.util.List;
import java.util.Map;/*** @Author: liaog* @Date: 2018-08-01 13:24* @description:*/
public class HttpResponse {private int responseCode;private Map<String, List<String>> headers;private byte[] responseData;private String defaultCharset;private Map<String ,String> cookies;public HttpResponse(String defaultCharset, int responseCode, Map<String, List<String>> headers, byte[] responseData,Map<String ,String> cookies) {this.defaultCharset = defaultCharset;this.responseCode = responseCode;this.headers = headers;this.responseData = responseData;this.cookies = cookies;}public int getResponseCode() {return responseCode;}public byte[] getResponseData() {return responseData;}public String getResponseString() {try {return new String(responseData, getResponseCharset());} catch (UnsupportedEncodingException e) {throw new RuntimeException(e);}}public List<String> getHeaders(String name) {return headers.get(name);}public String getHeader(String name) {List<String> theHeaders = getHeaders(name);if (theHeaders == null || theHeaders.isEmpty()) {return null;}return theHeaders.get(0);}public String getResponseCharset() {String contentType = getHeader("Content-Type");if (contentType == null || contentType.length() == 0) {return defaultCharset;}String[] parts = contentType.split(";");for (String part : parts) {part = part.trim();String[] kvParts = part.split("=");if (kvParts.length < 2) {continue;}String key = kvParts[0].trim();String value = kvParts[1].trim();if (key.equals("charset")) {return value;}}return defaultCharset;}public Map<String ,String> getCookies() {return cookies;}public void setCookies(Map<String ,String> cookies) {this.cookies = cookies;}
}

import java.io.*;/*** @Author: liaog* @Date: 2018-08-01 13:39* @description:*/
public class IOUtil {private static final int BUF_LEN = 1024 * 8;/*** 通过threadLocal做cache优化，避免重复申请内存*/private static final ThreadLocal<byte[]> bufTl = new ThreadLocal<byte[]>() {@Overrideprotected byte[] initialValue() {return new byte[BUF_LEN];}};private static byte[] getBuf() {return bufTl.get();}public static void copyAndClose(InputStream is, OutputStream os) throws IOException {byte[] buf = getBuf();while (true) {int len = is.read(buf);if (len < 0) {break;}os.write(buf, 0, len);}close(is);close(os);}public static byte[] readAsBytes(File file) throws IOException {ByteArrayOutputStream bos = new ByteArrayOutputStream(BUF_LEN);copyAndClose(readAsStream(file), bos);return bos.toByteArray();}public static void writeBytesToFile(File file, byte[] data) throws IOException{FileOutputStream fos = new FileOutputStream(file);copyAndClose(new ByteArrayInputStream(data), fos);}public static InputStream readAsStream(File file) throws IOException {return new FileInputStream(file);}public static void close(Closeable c) {if (c != null) {try {c.close();} catch (Exception e) {// ignore}}}public static String getFileNameSuffix(String name) {if (name == null) {return null;}int pos = name.lastIndexOf('.');if (pos < 0) {return null;}return name.substring(pos);}}

import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.SSLSession;
import javax.net.ssl.X509TrustManager;
import java.io.IOException;
import java.io.InputStream;
import java.security.SecureRandom;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.Map;/*** @Author: liaogk* @Date: 2018-08-01 13:19* @description:*/
public abstract class AbstractHttpClient implements HttpClient{@Overridepublic abstract HttpResponse doRequest(HttpMethod method, String url, Map<String, String> userHeaders, InputStream data ,Map<String,String> cookies) throws IOException;@Overridepublic  byte[] doGet(String url) throws IOException {return doGet(url, null).getResponseData();}@Overridepublic HttpResponse doGet(String url, Map<String, String> headers) throws IOException {return doRequest(HttpMethod.GET, url, headers, null,null);}@Overridepublic HttpResponse doGet2(String url, Map<String, String> headers,Map<String,String> cookies) throws IOException {return doRequest(HttpMethod.GET, url, headers, null,cookies);}@Overridepublic HttpResponse dopost(String url, Map<String, String> headers,InputStream data, Map<String, String>  cookies) throws IOException {return doRequest(HttpMethod.POST, url, headers, data,cookies);}protected static class TrustAnyTrustManager implements X509TrustManager {@Overridepublic void checkClientTrusted(X509Certificate[] x509Certificates, String s) throws CertificateException {}@Overridepublic void checkServerTrusted(X509Certificate[] x509Certificates, String s) throws CertificateException {}@Overridepublic X509Certificate[] getAcceptedIssuers() {return new X509Certificate[0];}}protected static class TrustAnyHostnameVerifier implements HostnameVerifier {@Overridepublic boolean verify(String s, SSLSession sslSession) {return true;}}protected final SecureRandom secureRandom = new SecureRandom();
}

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