获取网页编码的方法

获取网页编码的方法，参照了http://huwanting000.blog.163.com/blog/static/49925122201110297549998/里的方法。

 

private static String getCharset(HttpURLConnection urlConnection) {final Pattern char_pattern = Pattern.compile("<meta[^>]+charset=(.+?)\"");String strencoding = null;BufferedReader in = null;String type = urlConnection.getContentType();try {if (type != null) {int pos = type.indexOf("charset=");if (pos != -1) {strencoding = type.substring(pos + 8).trim();return strencoding;}}Matcher char_matcher = null;String line = null;in = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));while ((line = in.readLine()) != null) {char_matcher = char_pattern.matcher(line);if (char_matcher.find()) {String str = char_matcher.group(1);str = str.trim();strencoding = str;return strencoding;}}} catch (Exception e) {e.printStackTrace();} finally {urlConnection.disconnect();}if (strencoding == null) {strencoding = "GBK";}return strencoding;}