private String url;
private String body;
private String  UserName;
private String passWord;
public Crawler(String url, String body, String userName, String passWord) {
    this.url = url;
    this.body = body;
    this.UserName = userName;
    this.passWord = passWord;
}

public Crawler(String url, String body) {
    this.url = url;
    this.body=body;
}
public Elements Init() throws InterruptedException, IOException {

    HtmlPage htmlPage=null;
    WebClient client=new WebClient();
    client.getOptions().setJavaEnabled(true);
    client.getOptions().setCssEnabled(false);
    client.getOptions().setThrowExceptionOnFailingStatusCode(false);
    client.getOptions().setRedirectEnabled(true);

    String url2= UrlUtils.encodeAnchor(url);

    htmlPage = client.getPage(url2);
    System.out.println(htmlPage.toString());
    Thread.sleep(2000);
    Document parse = Jsoup.parse(htmlPage.asXml());
    Elements *** = parse.getElementsByClass(body);
    return ***;
}
public List<String> getElements(Elements elements){
    List<String> list=new ArrayList<>();
     String val=null;
    for (Element element : elements) {
       val= element.text();
       list.add(val);
    }
    return list;
}
public List<Integer> getInteger(Elements elements){
    List<Integer> list=new ArrayList<>();
    String val=null;
    for (Element element : elements) {
        val=element.text();
        list.add(Integer.parseInt(val));
    }
    return list;
}
public List<Double> getDouble(Elements elements){
    List<Double> list=new ArrayList<>();
    String val=null;
    for (Element element : elements) {
        val=element.text();
        list.add(Double.parseDouble(val));
    }
    return list;
}
public List<Date> getDate(Elements elements) throws ParseException {
    List<Date> list=new ArrayList<>();
    String val=null;
    SimpleDateFormat smt = new SimpleDateFormat("yyyy-MM-dd");
    for (Element element : elements) {
       val= element.text();
       Date date=smt.parse(val);
       list.add(date);
    }
    return list;
}
public List<String> getAttr(Elements elements,String attr){
    List<String> list=new ArrayList<>();
    String val=null;
    for (Element element : elements) {
        val=element.attr(attr);
        list.add(val);
    }
    return list;
}