如何使用jSoup從Yelp中檢索信息？

Question

編程很新穎，我一直在教自己的Java，因爲我一直在。我目前試圖做的是在特定的yelp搜索中提取所有給定公司的名稱，並將結果存儲到數組中。這裏是我去的：

import java.util.ArrayList; 
import org.jsoup.Jsoup; 
import org.jsoup.nodes.Document; 
import org.jsoup.nodes.Element; 
import org.jsoup.select.Elements; 
import java.io.IOException; 

public class YelpScraper 
{ 
    public static void main(String[] args) throws IOException 
    { 
     String url = "https://www.yelp.com/search?find_desc=&find_loc=new+jersey&ns=1"; 
     Document document = Jsoup.connect(url).get(); 

     Elements elements = document.getElementsByClass("biz-name js-analytics-click"); 

     for (Element element : elements) 
     { 
      System.out.println(elements.toString()); 
     } 
    } 
} 

現在這是我的問題。這是輸出：

<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/darios-restaurant-newark" data-hovercard-id="resfu-JNLUKR3l82D5W7-A"><span>Dario’s Restaurant</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/sushi-house-21-newark-2" data-hovercard-id="vMpJRWxm71XSBnWL9XfYpQ"><span>Sushi House 21</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/burger-walla-newark" data-hovercard-id="JmPZ-AyewjQPIJkKbkU0dA"><span>Burger Walla</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/hobbys-delicatessen-and-restaurant-newark" data-hovercard-id="-dEkFa3N6SXLahAMBAM8EA"><span>Hobby’s Delicatessen &amp; Restaurant</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/krugs-tavern-newark" data-hovercard-id="YhiUGWjAB1y7reqoKLWCow"><span>Krug’s Tavern</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/mcwhorter-barbecue-newark" data-hovercard-id="6xf4H2rOCtUIhyMgazRsnA"><span>McWhorter Barbecue</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/spanish-tavern-newark" data-hovercard-id="muXH1f3nwoSgWB3KN-rAfA"><span>Spanish Tavern</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/casa-d-paco-newark" data-hovercard-id="iIJ-dWgYcZTewVGJyP6EfQ"><span>Casa d’Paco</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/hero-king-handcrafted-sandwiches-newark" data-hovercard-id="hzwE2ub1J7fTwJDjTJwksA"><span>Hero King Handcrafted Sandwiches</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/the-green-chicpea-newark-2" data-hovercard-id="bDWWtSm-8uoW9_urjMCzTA"><span>The Green Chicpea</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/darios-restaurant-newark" data-hovercard-id="resfu-JNLUKR3l82D5W7-A"><span>Dario’s Restaurant</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/sushi-house-21-newark-2" data-hovercard-id="vMpJRWxm71XSBnWL9XfYpQ"><span>Sushi House 21</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/burger-walla-newark" data-hovercard-id="JmPZ-AyewjQPIJkKbkU0dA"><span>Burger Walla</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/hobbys-delicatessen-and-restaurant-newark" data-hovercard-id="-dEkFa3N6SXLahAMBAM8EA"><span>Hobby’s Delicatessen &amp; Restaurant</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/krugs-tavern-newark" data-hovercard-id="YhiUGWjAB1y7reqoKLWCow"><span>Krug’s Tavern</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/mcwhorter-barbecue-newark" data-hovercard-id="6xf4H2rOCtUIhyMgazRsnA"><span>McWhorter Barbecue</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/spanish-tavern-newark" data-hovercard-id="muXH1f3nwoSgWB3KN-rAfA"><span>Spanish Tavern</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/casa-d-paco-newark" data-hovercard-id="iIJ-dWgYcZTewVGJyP6EfQ"><span>Casa d’Paco</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/hero-king-handcrafted-sandwiches-newark" data-hovercard-id="hzwE2ub1J7fTwJDjTJwksA"><span>Hero King Handcrafted Sandwiches</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/the-green-chicpea-newark-2" data-hovercard-id="bDWWtSm-8uoW9_urjMCzTA"><span>The Green Chicpea</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/darios-restaurant-newark" data-hovercard-id="resfu-JNLUKR3l82D5W7-A"><span>Dario’s Restaurant</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/sushi-house-21-newark-2" data-hovercard-id="vMpJRWxm71XSBnWL9XfYpQ"><span>Sushi House 21</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/burger-walla-newark" data-hovercard-id="JmPZ-AyewjQPIJkKbkU0dA"><span>Burger Walla</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/hobbys-delicatessen-and-restaurant-newark" data-hovercard-id="-dEkFa3N6SXLahAMBAM8EA"><span>Hobby’s Delicatessen &amp; Restaurant</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/krugs-tavern-newark" data-hovercard-id="YhiUGWjAB1y7reqoKLWCow"><span>Krug’s Tavern</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/mcwhorter-barbecue-newark" data-hovercard-id="6xf4H2rOCtUIhyMgazRsnA"><span>McWhorter Barbecue</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/spanish-tavern-newark" data-hovercard-id="muXH1f3nwoSgWB3KN-rAfA"><span>Spanish Tavern</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/casa-d-paco-newark" data-hovercard-id="iIJ-dWgYcZTewVGJyP6EfQ"><span>Casa d’Paco</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/hero-king-handcrafted-sandwiches-newark" data-hovercard-id="hzwE2ub1J7fTwJDjTJwksA"><span>Hero King Handcrafted Sandwiches</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/the-green-chicpea-newark-2" data-hovercard-id="bDWWtSm-8uoW9_urjMCzTA"><span>The Green Chicpea</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/darios-restaurant-newark" data-hovercard-id="resfu-JNLUKR3l82D5W7-A"><span>Dario’s Restaurant</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/sushi-house-21-newark-2" data-hovercard-id="vMpJRWxm71XSBnWL9XfYpQ"><span>Sushi House 21</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/burger-walla-newark" data-hovercard-id="JmPZ-AyewjQPIJkKbkU0dA"><span>Burger Walla</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/hobbys-delicatessen-and-restaurant-newark" data-hovercard-id="-dEkFa3N6SXLahAMBAM8EA"><span>Hobby’s Delicatessen &amp; Restaurant</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/krugs-tavern-newark" data-hovercard-id="YhiUGWjAB1y7reqoKLWCow"><span>Krug’s Tavern</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/mcwhorter-barbecue-newark" data-hovercard-id="6xf4H2rOCtUIhyMgazRsnA"><span>McWhorter Barbecue</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/spanish-tavern-newark" data-hovercard-id="muXH1f3nwoSgWB3KN-rAfA"><span>Spanish Tavern</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/casa-d-paco-newark" data-hovercard-id="iIJ-dWgYcZTewVGJyP6EfQ"><span>Casa d’Paco</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/hero-king-handcrafted-sandwiches-newark" data-hovercard-id="hzwE2ub1J7fTwJDjTJwksA"><span>Hero King Handcrafted Sandwiches</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/the-green-chicpea-newark-2" data-hovercard-id="bDWWtSm-8uoW9_urjMCzTA"><span>The Green Chicpea</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/darios-restaurant-newark" data-hovercard-id="resfu-JNLUKR3l82D5W7-A"><span>Dario’s Restaurant</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/sushi-house-21-newark-2" data-hovercard-id="vMpJRWxm71XSBnWL9XfYpQ"><span>Sushi House 21</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/burger-walla-newark" data-hovercard-id="JmPZ-AyewjQPIJkKbkU0dA"><span>Burger Walla</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/hobbys-delicatessen-and-restaurant-newark" data-hovercard-id="-dEkFa3N6SXLahAMBAM8EA"><span>Hobby’s Delicatessen &amp; Restaurant</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/krugs-tavern-newark" data-hovercard-id="YhiUGWjAB1y7reqoKLWCow"><span>Krug’s Tavern</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/mcwhorter-barbecue-newark" data-hovercard-id="6xf4H2rOCtUIhyMgazRsnA"><span>McWhorter Barbecue</span></a> 
 
<a class="biz-name js-analytics-click" data-analytics-label="biz-name" href="/biz/spanish-tavern-newark" data-hovercard-id="muXH1f3nwoSgWB3KN-rAfA"><span>Spanish Tavern</span></a>

正如你所看到的，其輸出級的HTML代碼，我要的是簡單的企業的名稱。任何想法，我可以如何做不同。顯然getElementsByClass（）方法不是我應該使用的。感謝先進的傢伙！

Answer 1

您可以遍歷元素的子元素，或者首先使用更細粒度的選擇。我改變了你的選擇來返回包含標題的跨度，並使用text（）方法返回span標籤內的文本。

Elements elements = document.select(".indexed-biz-name span"); 
for (Element element : elements) 
{ 
    System.out.println(element.text()); 
}