快捷導(dǎo)航

SpringBoot中使用Jsoup爬取網(wǎng)站數(shù)據(jù)的方法

更新時間：2020年06月08日 15:10:07 作者：劉桐ssss

這篇文章主要介紹了SpringBoot中使用Jsoup爬取網(wǎng)站數(shù)據(jù)的方法，文中通過示例代碼介紹的非常詳細，對大家的學(xué)習(xí)或者工作具有一定的參考學(xué)習(xí)價值，需要的朋友們下面隨著小編來一起學(xué)習(xí)學(xué)習(xí)吧

爬取數(shù)據(jù)

導(dǎo)入jar包

 <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>

新建實體類

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

編寫爬蟲工具類

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;
    //解析網(wǎng)頁，30s內(nèi)未爬取成功，打印錯誤
    Document document = Jsoup.parse(new URL(url),30000);
    //獲取每一本書籍的id
    Element element = document.getElementById("DJ_goodsList");
    //獲取所有的li標(biāo)簽
    Elements elements = element.getElementsByTag("li");
 
    ArrayList<Content> goodsList = new ArrayList<>();
 
    //遍歷li標(biāo)簽的內(nèi)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;
  }
}

可以看到內(nèi)容、圖片、價格系數(shù)爬取