SpringBoot中使用Jsoup爬取网站数据的方法

 <properties>
    <java.version>1.8</java.version>
    <elasticsearch.version>7.6.1</elasticsearch.version>
  </properties>
 
  <dependencies>
    <dependency>
      <groupid>org.jsoup</groupid>
      <artifactid>jsoup</artifactid>
      <version>1.10.2</version>
    </dependency>
    <dependency>
      <groupid>com.alibaba</groupid>
      <artifactid>fastjson</artifactid>
      <version>1.2.62</version>
    </dependency>
    <dependency>
      <groupid>org.springframework.boot</groupid>
      <artifactid>spring-boot-starter-data-redis</artifactid>
    </dependency>
    <dependency>
      <groupid>org.springframework.boot</groupid>
      <artifactid>spring-boot-starter-data-elasticsearch</artifactid>
    </dependency>
    <dependency>
      <groupid>org.springframework.boot</groupid>
      <artifactid>spring-boot-starter-thymeleaf</artifactid>
    </dependency>
    <dependency>
      <groupid>org.springframework.boot</groupid>
      <artifactid>spring-boot-starter-web</artifactid>
    </dependency>
 
    <dependency>
      <groupid>org.springframework.boot</groupid>
      <artifactid>spring-boot-devtools</artifactid>
      <scope>runtime</scope>
      <optional>true</optional>
    </dependency>
    <dependency>
      <groupid>org.springframework.boot</groupid>
      <artifactid>spring-boot-configuration-processor</artifactid>
      <optional>true</optional>
    </dependency>
    <dependency>
      <groupid>org.projectlombok</groupid>
      <artifactid>lombok</artifactid>
      <optional>true</optional>
    </dependency>
    <dependency>
      <groupid>org.springframework.boot</groupid>
      <artifactid>spring-boot-starter-test</artifactid>
      <scope>test</scope>
      <exclusions>
        <exclusion>
          <groupid>org.junit.vintage</groupid>
          <artifactid>junit-vintage-engine</artifactid>
        </exclusion>
      </exclusions>
    </dependency>
  </dependencies>

@data
@noargsconstructor
@allargsconstructor
public class content {
  private string title;
  private string img;
  private string price;
}

public class htmlparseutil {
  public static void main(string[] args) throws exception {
    new htmlparseutil().parseddjj("包").foreach(system.out::println);
  }
 
  public list<content> 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<content> 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;
  }
}