public synchronized void InsertArticle(String name, String author, String years, String url, String introduction) {
        String insert_article = "INSERT INTO zhangyu_sca.article (name, author, years , url , introduction) values ( '" + name + "','" + author + "' , '" + years + "','" + url + "','" + introduction + "' );";
        try {
            article_ste.executeUpdate(insert_article);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }