正則匹配標籤

最近須要從網頁中經過正則獲取img的連接，查了不少資料，最終把採用的貼出來：

(?is)<img\s*((?<key>[^=]+)="*(?<value>[^"]+)")+?\s*/?>

 

 int i = 0;
//        previewDom = Pattern.compile("<img/s+[^>]*/s*src/s*=/s*([']?)(?<url>/S+)'?[^>]*>").matcher(previewDom).replaceFirst("<!--{img:"+i+"}-->");
        Set<String> pics = new HashSet<>();
        String img = "";
        String regEx_img = "(?is)<img\\s*((?<key>[^=]+)=\"*(?<value>[^\"]+)\")+?\\s*/?>";
        Pattern p_image;
        Matcher m_image;
        p_image = Pattern.compile(regEx_img, Pattern.CASE_INSENSITIVE);
        m_image = p_image.matcher(previewDom);
//        System.out.println();
        String tempStr = previewDom;
        String dealStr = "";
        while (m_image.find()) {
            // 獲得<img />數據
            img = m_image.group();
            // 匹配<img>中的src數據
            Matcher m = Pattern.compile("src\\s*=\\s*\"?(.*?)(\"|>|\\s+)").matcher(img);
            while (m.find()) {
                // 獲取文章連接,並拼成合適的url
                dealStr = dealStr + PRE_DEAL_STR + i + MID_DEAL_STR + m.group(1) + POST_DEAL_STR;
//                tempStr = previewDom;
                // 將原文連接拼接
                tempStr = tempStr.replace(img, "<!--{img:" + i + "}-->");
                pics.add(m.group(1));
//                tempStr = m_image.replaceFirst("<!--{img:" + i + "}-->");
                i++;
            }
        }