The trouble arises when you don't specify the encoding on the way out. Then Java will use whatever is set as the platform encoding, e.g., win1250.
What normal text editors do with a UTF-8 file is really outside the scope here. You have to use a competent editor.
Bob Foster
Jakub Kahovec wrote:
I've been experimenting a bit with serializing and parsing (java 1.4, xerces 2.6.2, windows xp) and here are the results which I got
This is a input xml file
<?xml version="1.0" encoding="UTF-8"?> <testEncoding> <czechCharsInUTF8>ÃâÃÅÄâÄÄÄËÄË</czechCharsInUTF8> <ecaron>ě</ecaron> <scaron>š</scaron> <invisibleTimesHex>⁢</invisibleTimesHex> <invisibleTimeDec>⁢</invisibleTimeDec> <visibleTimes>*</visibleTimes> <plus>+</plus> </testEncoding>
after parsing and serializing fromt/to file via byte stream i got this output
<?xml version="1.0" encoding="UTF-8"?> <testEncoding> <czechCharsInUTF8>ÃâÃÅÄâÄÄÄËÄË</czechCharsInUTF8> <ecaron>Ãâ</ecaron> <scaron>ÄË</scaron> <invisibleTimesHex>ÃÂË</invisibleTimesHex> <invisibleTimeDec>ÃÂË</invisibleTimeDec> <visibleTimes>*</visibleTimes> <plus>+</plus> </testEncoding>
it seems to be pretty good, all characters are in UTF-8. Problem is with the InvisibleTimes again. if one wants to edit it it's just impossible because normal text editors show
him sequence: ÃÂË which nobody can understand it.
after parsing and serializing fromt/to file via char stream i got this output
<?xml version="1.0" encoding="UTF-16"?> <testEncoding> <czechCharsInUTF8>ÄâÃÅÄâÄÄÄËÄË</czechCharsInUTF8> <ecaron>Ä</ecaron> <scaron>Å</scaron> <invisibleTimesHex>?</invisibleTimesHex> <invisibleTimeDec>?</invisibleTimeDec> <visibleTimes>*</visibleTimes> <plus>+</plus> </testEncoding>
it' completely useless, some of chars are in win1250 (ecaron ad scaron) charset, some of them are in utf-8 (part of tag <czechChardInUTF8> , some of them are
just question mark (invisibleTimes tags).
These results make me a bit confused about which method should I use to be able to get following result :
<?xml version="1.0" encoding="UTF-8"?> <testEncoding> <czechCharsInUTF8>ÃâÃÅÄâÄÄÄËÄË</czechCharsInUTF8> <ecaron>Ãâ</ecaron> <scaron>ÄË</scaron> <invisibleTimesHex>⁢</invisibleTimesHex> <invisibleTimeDec>⁢</invisibleTimeDec> <visibleTimes>*</visibleTimes> <plus>+</plus> </testEncoding>
Bob Foster wrote:
As others have suggested, the problem is in JEditPane. You need to tell it to use a font that can display all of your characters. Unfortunately, that's platform-specific and I'm not much of a JEditPane user (Eclipse/SWT for me), but somebody can probably help you if you say what platform you're running on.
Bob Foster
Kahovec, Jakub wrote:
It produdes Xerces 2.6.2 (LSParser, LSSerializer and XMLSerializer). I've been using xerces parser and serializer in my java authoring tool to load and save documents. I've found out the problem with encoding when I loaded and displayed the xml document (with char. ref. form chars)
in the jeditpanel component. Instead of + and ⁢ I saw '+' and 'square-liked
character. I tried to serialized xml document to console as well as to file, load document via
InputStream or Reader input with LSInput but I never got results where would be chars sequence in origin form. Only when I explicitly set encoding in LSInput to (ISO-8859-1)and loaded it via InputStream then the chars sequence ⁢ kept in the same form but the sequence + was changed to '+' character anyway.
Then I tried to debug structure of DOM document (in Eclipse 3.1) but saw the same results (+ char and square char, probably it's only problem of showing utf-8 chars in eclipse.)
So to be honest I don't know now, how to find out, where is the problem, whether is it
during parsing, serializing or displaying data. I'm not so experienced in encodings as well as in charsets but as far as I know java treat internaly with chars in UTF-16 charset, could be it the a part of the problem ? I don't really know.
Thanks for any ideas.
Jakub
-----Original Message----- From: Bob Foster [mailto:[EMAIL PROTECTED] Sent: Mon 2/28/2005 10:36 PM To: [EMAIL PROTECTED] Subject: Re: utf-8 characters problem
Exactly what Xerces or standard API is producing this result? Are you sure you're not looking at the result in some editor (that is using the wrong code page to represent your characters)?
XML parsers deliver characters in Unicode. You are apparently trying to use the characters as though each character had eight bits.
Tell us a little more about what steps you took to see what you describe and maybe someone will be able to help.
Bob Foster
Jakub Kahovec wrote:
Hi,
when I parse the xml document (with xerces 2.6.2) which has in xml declaration specified utf-8 encoding and which contains utf-8 characters in character reference form &#xxxx;
the parser replaces these characters with ascii characters. For some characters is ok but for instance InvisibleTimes change for some incorrect strange character sentese.
I'd like to know if is possible to prohibit changing characters from char. ref. form ? Or does it exist some recommendation how to treat with these characters.
Here is a piece of my 'problematic' xml document
<?xml version="1.0" encoding="UTF-8"?> <mathDoc>
<p>Factorise the following quadratic expression: <math> <mrow> <msup> <mrow> <mi>x</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msup> <mo>+</mo> <!-- replaces with character + --> <mi>p</mi> <mo>⁢</mo> <!-- here is InvisibleTimes --> <mi>x</mi> <mo>+</mo> <!-- replaces with character + --> <mi>q</mi> </mrow> </math>
</mathDoc>
Thanks so much
Jakub
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