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POInvalid XML Character During Unmarshall
 

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  1. POInvalid XML Character During Unmarshall
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    <p>I am marshalling objects to XML file using encoding "UTF-8". It generates file successfully. But when I try to unmarshal it back, there is an error:</p> <blockquote> <p>An invalid XML character (Unicode: 0x{2}) was found in the value of attribute "{1}" and element is "0"</p> </blockquote> <p>The character is 0x1A or \u001a, which is valid in UTF-8 but illegal in XML. Marshaller in JAXB allows writing this character into XML file, but Unmarshaller cannot parse it back. I tried to use another encoding (UTF-16, ASCII, etc) but still error.</p> <p>The common solution is to remove/replace this invalid character before XML parsing. But if we need this character back, how to get the original character after unmarshalling?</p> <hr> <p>While looking for this solution, I want to replace the invalid characters with a substitute character (for example dot = ".") before unmarshalling.</p> <p>I have created this class:</p> <pre><code>public class InvalidXMLCharacterFilterReader extends FilterReader { public static final char substitute = '.'; public InvalidXMLCharacterFilterReader(Reader in) { super(in); } @Override public int read(char[] cbuf, int off, int len) throws IOException { int read = super.read(cbuf, off, len); if (read == -1) return -1; for (int readPos = off; readPos &lt; off + read; readPos++) { if(!isValid(cbuf[readPos])) { cbuf[readPos] = substitute; } } return readPos - off + 1; } public boolean isValid(char c) { if((c == 0x9) || (c == 0xA) || (c == 0xD) || ((c &gt;= 0x20) &amp;&amp; (c &lt;= 0xD7FF)) || ((c &gt;= 0xE000) &amp;&amp; (c &lt;= 0xFFFD)) || ((c &gt;= 0x10000) &amp;&amp; (c &lt;= 0x10FFFF))) { return true; } else return false; } } </code></pre> <p>Then this is how I read and unmarshall the file:</p> <pre><code>FileReader fileReader = new FileReader(this.getFile()); Reader reader = new InvalidXMLCharacterFilterReader(fileReader); Object o = (Object)um.unmarshal(reader); </code></pre> <p>Somehow the reader does not replace invalid characters with the character I want. It results a wrong XML data which can't be unmarshalled. Is there something wrong with my InvalidXMLCharacterFilterReader class?</p>
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    1. COCould you please check in XML header, which charset is defined in it after marshalling? Is it UTF-8?
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    2. COThere is no charset defined in XML header, only <?xml version="1.0" ?>. But I have put this: `m.setProperty(Marshaller.JAXB_ENCODING, "UTF-8");`
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