本文实例讲述了JAVA过滤标签实现将html内容转换为文本的方法。分享给大家供大家参考，具体如下：
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/*** 把html内容转为文本* @param html 需要处理的html文本* @param filterTags 需要保留的html标签样式* @return*/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();} |
希望本文所述对大家java程序设计有所帮助。
