SpringBoot中使用Jsoup爬取网站数据的方法

爬取数据

导入jar包

 
    1.8
    7.6.1
  
 
  
    
      org.jsoup
      jsoup
      1.10.2
    
    
      com.alibaba
      fastjson
      1.2.62
    
    
      org.springframework.boot
      spring-boot-starter-data-redis
    
    
      org.springframework.boot
      spring-boot-starter-data-elasticsearch
    
    
      org.springframework.boot
      spring-boot-starter-thymeleaf
    
    
      org.springframework.boot
      spring-boot-starter-web
    
 
    
      org.springframework.boot
      spring-boot-devtools
      runtime
      true
    
    
      org.springframework.boot
      spring-boot-configuration-processor
      true
    
    
      org.projectlombok
      lombok
      true
    
    
      org.springframework.boot
      spring-boot-starter-test
      test
      
 
   org.junit.vintage
   junit-vintage-engine
 
      
    
  

新建实体类

@Data
@NoArgsConstructor
@AllArgsConstructor
public class Content {
  private String title;
  private String img;
  private String price;
}

编写爬虫工具类

public class HtmlParseUtil {
  public static void main(String[] args) throws Exception {
    new HtmlParseUtil().parseDDJJ("包").forEach(System.out::println);
  }
 
  public List parseDDJJ(String keywords) throws Exception {
    //爬取url地址
    String url = "https://search.xxxx.com/Search?keyword="+keywords;
    //解析网页，30s内未爬取成功，打印错误
    document document = Jsoup.parse(new URL(url),30000);
    //获取每一本书籍的id
    Element element = document.getElementById("DJ_goodsList");
    //获取所有的li标签
    Elements elements = element.getElementsByTag("li");
 
    ArrayList goodsList = new ArrayList<>();
 
    //遍历li标签的内容
    for (Element el : elements) {
      String img = el.getElementsByTag("img").eq(0).attr("src");
      String price = el.getElementsByClass("p-price").eq(0).text();
      String title = el.getElementsByClass("p-name").eq(0).text();
 
      Content content = new Content();
      content.setTitle(title);
      content.setPrice(price);
      content.setImg(img);
      goodsList.add(content);
    }
    return goodsList;
  }
}

可以看到内容、图片、价格系数爬取

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