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POxstream - correct way to save XML in UTF-8
 

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    <p>Previously, to <strong>read</strong> XML in UTF-8 encoding through xstream, I am using DomDriver as follow :</p> <pre><code>XStream xStream = new XStream(new DomDriver("UTF-8")); </code></pre> <p>However, later I realize this is VERY slow. I use the following way :</p> <p><a href="https://stackoverflow.com/questions/3623546/optimize-loading-speed-of-xstream">Optimize loading speed of xstream</a></p> <p>This works fine at least.</p> <p>However, later, I realize the same technique cannot be applied to write XML. I will get all ??? characters.</p> <p>This is the last workable code using DomDriver during <strong>write</strong></p> <pre><code>public static boolean toXML(Object object, File file) { XStream xStream = new XStream(new DomDriver("UTF-8")); OutputStream outputStream = null; try { outputStream = new FileOutputStream(file); xStream.toXML(object, outputStream); } catch (Exception exp) { log.error(null, exp); return false; } finally { if (false == close(outputStream)) { return false; } outputStream = null; } return true; } </code></pre> <p>The above code works fine. In order to match with the <strong>read</strong> method which doesn't use DomDriver, I change the code to</p> <pre><code>public static boolean toXML(Object object, File file) { XStream xStream = new XStream(); OutputStream outputStream = null; Writer writer = null; try { outputStream = new FileOutputStream(file); writer = new OutputStreamWriter(outputStream, Charset.forName("UTF-8")); xStream.toXML(object, outputStream); } catch (Exception exp) { log.error(null, exp); return false; } finally { if (false == close(writer)) { return false; } if (false == close(outputStream)) { return false; } writer = null; outputStream = null; } return true; } </code></pre> <p>This time, all my Chinese characters changes to ???</p> <p>May I know anything I had done wrong?</p>
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