阵列主义者的奇怪行为

我正在使用JSP、JSTL、servlets和JavaBeans编写一个网站。

在代码的某一点上,我试图使用对象的数组列表,但发生了一件奇怪的事情:当我添加第一个对象时,它是好的;当我添加第二个对象时,它将其添加到第二个对象中,但索引(0)处的对象获得的值与索引(1)处的对象相同。

可能有个问题在

ArrayList<Article> articleList = new ArrayList<Article>();
Article newArticle = new Article();

因为ArticleList是项目类的ArrayList。

有人能指出我做错了什么吗?

以下是我的代码:

public ArrayList<Article> getArticles()
{
    baseIO mySql = new baseIO();
    ArrayList<Article> articleList = new ArrayList<Article>();
    int articleId = 0;

    try
    {
        String sql =
            "select * from jsp_blog_article order by article_id Desc Limit 3";
        con = (Connection)mySql.getConnection();
        pstmt = (PreparedStatement) con.prepareStatement(sql);
        ResultSet rs = pstmt.executeQuery();
        while (rs.next()) {
            Article newArticle = new Article();
            newArticle.setArticleAuthor(rs.getString("article_name"));
            newArticle.setArticleBody(rs.getString("article_body"));
            newArticle.setArticleAuthor(rs.getString("article_author"));
            newArticle.setArticleDate(rs.getString("article_date"));
            articleId = Integer.parseInt(rs.getString("article_id"));
            newArticle.setArticleId(String.valueOf(articleId));
            newArticle.setArticleComments(this.getCommentsNum(articleId));
            articleList.add(newArticle);
        }
        con.close();
        pstmt.close();
    }
    catch(Exception e)
    {
        return null;
    }

    return articleList;
}

还有文章课

package objects;

import java.io.Serializable;

public class Article implements Serializable{
    private String articleName;
    private String articleBody;
    private String articleAuthor;
    private String articleComments;
    private String articleDate;
    private String articleId;

    public Article()
    {

    }

    // all the getters and setters in place, but it is too long
    // so i am not going to post them in forum

}