转载：将html内容转为文本的函数 

/**
 * 把html内容转为文本原作者：johennes  
 *
 * @param html       需要处理的html文本
 * @param filterTags 需要保留的html标签样式
 */
public static String trimHtml2Txt(String html, String[] filterTags) {
    html = html.replaceAll("\\<head>[\\s\\S]*?</head>(?i)", "");// 去掉head
    html = html.replaceAll("\\<!--[\\s\\S]*?-->", "");// 去掉注释
    html = html.replaceAll("\\<![\\s\\S]*?>", "");
    html = html.replaceAll("\\<style[^>]*>[\\s\\S]*?</style>(?i)", "");// 去掉样式
    html = html.replaceAll("\\<script[^>]*>[\\s\\S]*?</script>(?i)", "");// 去掉js
    html = html.replaceAll("\\<w:[^>]+>[\\s\\S]*?</w:[^>]+>(?i)", "");// 去掉word标签
    html = html.replaceAll("\\<xml>[\\s\\S]*?</xml>(?i)", "");
    html = html.replaceAll("\\<html[^>]*>|<body[^>]*>|</html>|</body>(?i)", "");
    html = html.replaceAll("\\\r\n|\n|\r", " ");// 去掉换行
    html = html.replaceAll("\\<br[^>]*>(?i)", "\n\r");
    List<String> tags = new ArrayList<String>();
    List<String> s_tags = new ArrayList<String>();
    List<String> halfTag = Arrays.asList(new String[] { "img", "table", "thead", "th", "tr", "td" });//
    if (filterTags != null && filterTags.length > 0) {
        for (String tag : filterTags) {
            tags.add("<" + tag + (halfTag.contains(tag) ? "" : ">"));// 开始标签
            if (!"img".equals(tag))
                tags.add("</" + tag + ">");// 结束标签
            s_tags.add("#REPLACETAG" + tag + (halfTag.contains(tag) ? "" : "REPLACETAG#"));// 尽量替换为复杂一点的标记,以免与显示文本混合,如：文本中包含#td、#table等
            if (!"img".equals(tag))
                s_tags.add("#REPLACETAG/" + tag + "REPLACETAG#");
        }
    }
    html = StringUtils.replaceEach(html, tags.toArray(new String[tags.size()]),
            s_tags.toArray(new String[s_tags.size()]));
    html = html.replaceAll("\\</p>(?i)", "\n\r");
    html = html.replaceAll("\\<[^>]+>", "");
    html = StringUtils.replaceEach(html, s_tags.toArray(new String[s_tags.size()]),
            tags.toArray(new String[tags.size()]));
    html = html.replaceAll("\\ ", " ");
    return html.trim();
}
posted @ 2019-11-19 16:34  墨竹丶蝉翼  阅读(937)  评论(0)    收藏  举报