private int getPageNum() {
    setCurrentPage(1);
    Document doc = WebScrappUtil.post(url, argMap);
    Elements aa = doc.select("p[class=page_info]");

    String[] pageString = aa.text().split("]");

    logger.info("aa:{}", aa.text());
    int indexname = pageString[0].lastIndexOf("/");
    String pageNum = pageString[0].substring(indexname + 1, pageString[0].length());

    return Integer.valueOf(pageNum);
  }
  public Set<DartCompany> getDartCompanySet(int pageIndex) {
    Set<DartCompany> rst = new HashSet<DartCompany>();

    setCurrentPage(pageIndex);
    Document doc = WebScrappUtil.get(url, argMap);

    Elements elements = doc.select("div[class =table_scroll]>table>tbody>tr");

    rst = writeDartCompanyEntity(elements);
    logger.info("DartCompanySize : {} ", rst.size());
    for (DartCompany comp : rst) {
      comp.setPageNum(pageIndex);
    }

    return rst;
  }