if (eventType.equalsIgnoreCase(MessageUtil.EVENT_TYPE_CLICK)) {
                    // 事件KEY值，与创建自定义菜单时指定的KEY值对应
                    String eventKey = requestMap.get("EventKey");
                    if (eventKey.equals("CONTACT_US")) {
                        NewsMessage newsMessage = buildmessage(open_id, toUserName, 1);
                        // 将图文消息对象转换成xml字符串
                        respMessage = MessageUtil.newsMessageToXml(newsMessage);
                    }

                }
private NewsMessage buildmessage(String open_id, String toUserName, Integer type) {

        // 创建图文消息
        NewsMessage newsMessage = new NewsMessage();
        newsMessage.setToUserName(open_id);
        newsMessage.setFromUserName(toUserName);
        newsMessage.setCreateTime(new Date().getTime());
        newsMessage.setMsgType(MessageUtil.RESP_MESSAGE_TYPE_NEWS);
        newsMessage.setFuncFlag(0);

        List<WelMsgEntity> welMsgEntities = welMsgService.findAll(type);
        List<WelMsgEntity> needlist = new ArrayList<WelMsgEntity>();
        if (welMsgEntities.size() > 0) {
            for (WelMsgEntity welMsgEntity : welMsgEntities) {
                if (needlist.size() < 8) {
                    needlist.add(welMsgEntity);
                }
            }
        }
        List<Article> articleList = new ArrayList<Article>();
        for (WelMsgEntity welMsgEntity : needlist) {
            Article article = new Article();
            article.setTitle(welMsgEntity.getTitle());
            article.setDescription(welMsgEntity.getDescription());
            article.setPicUrl(fileURLPrefix + welMsgEntity.getPicurl());
            article.setUrl(welMsgEntity.getUrl());
            articleList.add(article);
        }
        // 设置图文消息个数
        newsMessage.setArticleCount(articleList.size());
        // 设置图文消息包含的图文集合
        newsMessage.setArticles(articleList);

        return newsMessage;
    }