正则表达式:获取一个URL中的Host

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Connection conn = C3P0Util.getInstance().getConnection(C3P0Util.SOURCE);String url = conn.getMetaData().getURL();String host = "";Pattern p = Pattern.compile("(?<=//|)((\\w)+\\.)+\\w+");Matcher matcher = p.matcher(url);if (matcher.find()) {host = matcher.group();}System.out.println(host);

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