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POHow to handle non-UTF8 html page in Java?
 

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  1. POHow to handle non-UTF8 html page in Java?
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    <p>My task is to retrieve html strings from urls using Java.</p> <p>I know how to using HttpUrlConnection &amp; InputStream to get the string.</p> <p>However, I have an encoding problem for some pages.</p> <p>If some pages have different encoding (e.g., GB2312), other than UTF8, the string I get is just arbitrary chars or question marks.</p> <p>Can any one please tell me how to solve this problem?</p> <p>Thanks</p> <p>Below is my code to download the html from a url.</p> <pre><code>private String downloadHtml(String urlString) { URL url = null; InputStream inStr = null; StringBuffer buffer = new StringBuffer(); try { url = new URL(urlString); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); // Cast shouldn't fail HttpURLConnection.setFollowRedirects(true); // allow both GZip and Deflate (ZLib) encodings //conn.setRequestProperty("Accept-Encoding", "gzip, deflate"); String encoding = conn.getContentEncoding(); inStr = null; // create the appropriate stream wrapper based on // the encoding type if (encoding != null &amp;&amp; encoding.equalsIgnoreCase("gzip")) { inStr = new GZIPInputStream(conn.getInputStream()); } else if (encoding != null &amp;&amp; encoding.equalsIgnoreCase("deflate")) { inStr = new InflaterInputStream(conn.getInputStream(), new Inflater(true)); } else { inStr = conn.getInputStream(); } int ptr = 0; InputStreamReader inStrReader = new InputStreamReader(inStr, Charset.forName("GB2312")); while ((ptr = inStrReader.read()) != -1) { buffer.append((char)ptr); } inStrReader.close(); conn.disconnect(); } catch(Exception e) { e.printStackTrace(); } finally { if (inStr != null) try { inStr.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } return buffer.toString(); } </code></pre>
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