主题：java 爬虫--爬取'阿里指数'网站的每个分类的top50 相关数据；
网站网址为：http://index.1688.com/alizs/top.htm?curType=offer&userType=purchaser&cat=7
需求：爬取数码电脑下的每个细分分类下的所有top50数据；
工具：使用selenium 爬取指定谷歌浏览器的内容；可进行可视化操作；
import java.io.BufferedReader; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; import java.io.InputStreamReader; import java.io.UnsupportedEncodingException; import java.net.URLEncoder; import java.util.regex.Matcher; import java.util.regex.Pattern; import org.apache.bcel.generic.Select; import org.apache.commons.lang3.builder.ToStringStyle; import org.apache.commons.logging.LogFactory; import org.jsoup.Connection; import org.jsoup.Jsoup; import org.jsoup.nodes.Document; import org.jsoup.nodes.Element; import org.jsoup.select.Elements; import org.openqa.selenium.By; import org.openqa.selenium.WebDriver; import org.openqa.selenium.WebElement; import org.openqa.selenium.chrome.ChromeDriver; import org.openqa.selenium.phantomjs.PhantomJSDriver; import org.openqa.selenium.phantomjs.PhantomJSDriverService; import org.openqa.selenium.remote.DesiredCapabilities; import org.openqa.selenium.support.ui.ExpectedConditions; import org.openqa.selenium.support.ui.WebDriverWait; import com.gargoylesoftware.htmlunit.BrowserVersion; import com.gargoylesoftware.htmlunit.NicelyResynchronizingAjaxController; import com.gargoylesoftware.htmlunit.ProxyConfig; import com.gargoylesoftware.htmlunit.WebClient; import com.gargoylesoftware.htmlunit.WebClientOptions; import com.gargoylesoftware.htmlunit.html.HtmlAnchor; import com.gargoylesoftware.htmlunit.html.HtmlButton; import com.gargoylesoftware.htmlunit.html.HtmlForm; import com.gargoylesoftware.htmlunit.html.HtmlPage; import com.gargoylesoftware.htmlunit.html.HtmlSubmitInput; import com.gargoylesoftware.htmlunit.html.HtmlTextInput; import java.util.ArrayList; import java.util.Date; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Random; import java.text.SimpleDateFormat; public class AliZhiShu { //日期格式 private static SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); //PHANTOMJS驱动路劲 private static String PHANTOMJS_DRIVER = "D:/phantomjs-2.1.1-windows/bin/phantomjs.exe"; //文件位置 private static String path = null; //文件位置 private static String path2 = null; private static WebDriver driver = null; private static int companyNameNum = 0; //谷歌驱动器 private static String CHROME_DRIVER = "C:/Program Files (x86)/Google/Chrome/Application/chromedriver.exe"; //爬虫时模拟的浏览器请求头 private static String[] userAgent = { "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; AcooBrowser; .NET CLR 1.1.4322; .NET CLR 2.0.50727)", "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; Acoo Browser; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.0.04506)", "Mozilla/4.0 (compatible; MSIE 7.0; AOL 9.5; AOLBuild 4337.35; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)", "Mozilla/5.0 (Windows; U; MSIE 9.0; Windows NT 9.0; en-US)", "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET CLR 2.0.50727; Media Center PC 6.0)", "Mozilla/5.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET CLR 1.0.3705; .NET CLR 1.1.4322)", "Mozilla/4.0 (compatible; MSIE 7.0b; Windows NT 5.2; .NET CLR 1.1.4322; .NET CLR 2.0.50727; InfoPath.2; .NET CLR 3.0.04506.30)", "Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN) AppleWebKit/523.15 (KHTML, like Gecko, Safari/419.3) Arora/0.3 (Change: 287 c9dfb30)", "Mozilla/5.0 (X11; U; Linux; en-US) AppleWebKit/527+ (KHTML, like Gecko, Safari/419.3) Arora/0.6", "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.2pre) Gecko/20070215 K-Ninja/2.1.1", "Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9) Gecko/20080705 Firefox/3.0 Kapiko/3.0", "Mozilla/5.0 (X11; Linux i686; U;) Gecko/20070322 Kazehakase/0.4.5", "Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.8) Gecko Fedora/1.9.0.8-1.fc10 Kazehakase/0.5.6", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.56 Safari/535.11", "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_3) AppleWebKit/535.20 (KHTML, like Gecko) Chrome/19.0.1036.7 Safari/535.20", "Opera/9.80 (Macintosh; Intel Mac OS X 10.6.8; U; fr) Presto/2.9.168 Version/11.52", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.11 (KHTML, like Gecko) Chrome/20.0.1132.11 TaoBrowser/2.0 Safari/536.11", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.71 Safari/537.1 LBBROWSER", "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; LBBROWSER)", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; QQDownload 732; .NET4.0C; .NET4.0E; LBBROWSER)", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.84 Safari/535.11 LBBROWSER", "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E)", "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; QQBrowser/7.0.3698.400)", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; QQDownload 732; .NET4.0C; .NET4.0E)", "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; SV1; QQDownload 732; .NET4.0C; .NET4.0E; 360SE)", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; QQDownload 732; .NET4.0C; .NET4.0E)", "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E)", "Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.89 Safari/537.1", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.89 Safari/537.1", "Mozilla/5.0 (iPad; U; CPU OS 4_2_1 like Mac OS X; zh-cn) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8C148 Safari/6533.18.5", "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:2.0b13pre) Gecko/20110307 Firefox/4.0b13pre", "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:16.0) Gecko/20100101 Firefox/16.0", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.64 Safari/537.11", "Mozilla/5.0 (X11; U; Linux x86_64; zh-CN; rv:1.9.2.10) Gecko/20100922 Ubuntu/10.10 (maverick) Firefox/3.6.10", "Mozilla/5.0 (Windows NT 6.3; WOW64; Trident/7.0; SMJB; rv:11.0) like Gecko", "Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36", "Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 Safari/537.36", "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36", "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:36.0) Gecko/20100101 Firefox/36.0"}; //主方法 public static void main(String[] args) throws UnsupportedEncodingException{ String url=null; String urlWhole=null; String category2=null; WebElement search = null; List<String> arr2=new ArrayList<>(); List<String> arrName2=new ArrayList<>(); List<String> arrName23=new ArrayList<>(); List<String> arr3=new ArrayList<>(); List<String> arrName3=new ArrayList<>(); Document doc = new AliZhiShu().connect("http://index.1688.com/alizs/top.htm?curType=offer&userType=purchaser&cat=7"); //将二级分类文件取出 Elements categoryTwo = doc.select("[class=selector cate-select fd-clr]").select("[data-key=-1]").select("a[data-key]"); int i=0; for(Element e:categoryTwo){ //将二级分类名称取出 String categoryTwoName =categoryTwo.get(i).text();
//将二级分类id取出 String categoryTwoId = categoryTwo.get(i).attr("data-key");
url="http://index.1688.com/alizs/top.htm?curType=offer&userType=purchaser&cat=7"+","+categoryTwoId; arr2.add(url); arrName2.add(categoryTwoName); i++; } //将三级分类取出 for (int j = 0; j < arr2.size(); j++) {
Document doc1 = new AliZhiShu().connect(arr2.get(j)); Elements categoryThird = doc1.select("[class=selector cate-select fd-clr]").select("[data-key=-1]").select("a[data-key]"); for(int n=1; n < categoryThird.size();n++){ String categoryThirdName = categoryThird.get(n).text(); String categoryThirdId = categoryThird.get(n).attr("data-key");
urlWhole= arr2.get(j)+","+categoryThirdId; arrName23.add(arrName2.get(j)); arr3.add(urlWhole); arrName3.add(categoryThirdName); } } //输入每一个三级分类标签，爬虫 for (int j = 0; j < arr3.size(); j++) {
//搜索'最近30天'按钮，并点击 System.setProperty("webdriver.chrome.driver",CHROME_DRIVER); driver = new ChromeDriver(); driver.get(arr3.get(j)); driver.findElement(By.xpath(".//*/input[@value='month']")).click(); //爬虫 new AliZhiShu().crawler(arr3.get(j),arrName23.get(j),arrName3.get(j));
waitTime(2000); driver.quit();
} } //爬虫 public void crawler(String url,String arrName2,String arrName3) throws UnsupportedEncodingException{ String[] p = new String[10]; /**小区参数数组：p * p[0]:三级分类链接 * p[1]:一级分类名称 * p[2]:二级分类名称 * p[3]:三级分类名称 * p[4]:产品链接 * p[5]:产品名称 * p[6]:价格 * p[7]:产品所属公司 * p[8]:交易指数 * p[9]:评价 **/ p[0] = url; p[1] = "数码、电脑"; p[2] = arrName2; p[3] = arrName3;
Document docDetail = new AliZhiShu().connect(url);
if(docDetail!=null){ Elements elementEach = docDetail.select("div[class=unit hot unfolded]").select(".item.fd-clr"); for(int i=0;i<elementEach.size();i++){ String elementUrl = elementEach.select("div[class=detail each]").select("p[class=title]").select("a").get(i).attr("href"); p[4] = elementUrl; String elementName = elementEach.select("div[class=detail each]").select("p[class=title]").select("a").get(i).text(); p[5] = elementName; String elementPrice = elementEach.select("div[class=detail each]").select("em[class=money]").get(i).text(); p[6] = elementPrice; String elementCompany = elementEach.select("div[class=detail each]").select("p[class=com]").get(i).text(); p[7] = elementCompany; String elementTrade = elementEach.select("p[class=first each]").get(i).text(); p[8] = elementTrade; String elementEstimate = elementEach.select("p[class=second each]").get(i).text(); p[9] = elementEstimate;
exportFile(p[0] + "||" + p[1] + "||" + p[2] + "||" + p[3] + "||" + p[4] + "||" + p[5] + "||" + p[6] + "||" + p[7] + "||" + p[8] + "||" + p[9] ,new File("C:/Users/91911/Desktop/jieguo_alizhishu_new_20180724.txt")); } } }
public static Document connect(String url){ if(url==null || url.equals("")) return null;
WebDriver webDriver = null; try{ System.setProperty("webdriver.chrome.driver","C:/Program Files (x86)/Google/Chrome/Application/chromedriver.exe"); webDriver = new ChromeDriver(); webDriver.get(url); //开始打开网页，等待输入元素出现 WebDriverWait wait = new WebDriverWait(webDriver,5); wait.until(ExpectedConditions.presenceOfElementLocated(By.name("keywords"))); int tried = 5; while(webDriver==null && tried>0){ waitTime(2000); tried--; } }catch(Exception e){ //e.printStackTrace(); System.out.println("！连接网站超时"); } Document doc = null; if(webDriver!=null) { doc = Jsoup.parse(webDriver.getPageSource()); } webDriver.quit(); return doc; } //等待 static public void waitTime(int time){ try { Thread.sleep(time); }catch(InterruptedException e) { e.printStackTrace(); System.out.println("！进程被打断"); } } //写文件 public static void exportFile(String content,File file){ try { FileWriter out = new FileWriter(file,true); out.write(content + "\r\n"); out.flush(); out.close(); }catch (IOException e){ System.out.println("！IO异常，写文件异常"); } } }
爬取阿里指数页面的数码电脑分类下的每个分类（三级分类的）top50条内容；