Re: EscapeStrategy for in-text html tags not working
Rolf Lear <[email protected]> Wed, 09 Jan 2013 07:49:22 -0500
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Hi there.
Escaping "<" and other the other characters '>', '&', and '\r' is always
done (with one exception...). The '\n' char is also sometimes replaced
with \r\n.
if (ch == '<' || ch == '>' || ch == '&' || ch == '\r' || ch
== '\n'
|| strategy.shouldEscape(ch)) {
......
}
To do anything else would be to produce broken XML.
What you want is (likelye to be) broken XML and JDOM is not designed to
produce broken XML. Really the best way to solve your problem is to do
the right handling of your output. The code using your XML should parse
the data from your element and the parsing process will un-escape the
characters. The next best way to do things is to make the actual HTML
content valid XHTML and to parse it and then add the Element content as
JDOM objects to the JDOM tree, and then output the complete JDOM
document normally.
The wrong way to do it wold be to override/extend the
AbstractXMLOutputProcessor and to 'hack' the code that does the escaping.
TrAXEscapePI concept is designed to support obscure functionality in the
XMLTransformation process (XSLT). Technically I think you *can* use this
concept to support not-escaping by having the following JDOM content:
Element emt = new Element("tag");
emt.addContent(new
ProcessingInstruction(javax.xml.transform.Result.PI_DISABLE_OUTPUT_ESCAPING));
emt.addContent(new Text("<html><body><p></body></html>"));
emt.addContent(new
ProcessingInstruction(javax.xml.transform.Result.PI_ENABLE_OUTPUT_ESCAPING));
Then you will need to set Format.setIgnoreTrAXExcapingPIs to false when
you output the JDOM Content.
The above is a *hack* and is not what I recommend that you do.
Rolf
On 09/01/2013 3:50 AM, SoTaNeZ wrote:
> Hello.
>
> I have some XML elements which text is not plain, but contains some
> HTML tags.
> The thing is that when outputting these to an XML file the characters
> "<" and ">" are changed into "<" and ">" preventing its correct
> posterior HTML processing.
> I tried using this EscapeStrategy:
>
> ------------------
> class EscapeSimbolos implements EscapeStrategy {
>
> public boolean shouldEscape(char car) {
> switch (car) {
> case '<':
> return false;
> case '>':
> return false;
> default:
> return false;
> }
> }
> }
> ------------------
>
> but with no effect. The code within the two case statements is never
> reached, but the method is executed, so it seems that these characters
> are converted before the EscapeStrategy gets into action, or maybe I
> am doing something wrong.
>
> This is the code to set the format:
>
> ---------------------
> Format formato = Format.getPrettyFormat();
> formato.setTextMode(TextMode.PRESERVE);
> formato.setEscapeStrategy(new EscapeSimbolos());
> formato.setIgnoreTrAXEscapingPIs(true);
> XMLOutputter outputter = new XMLOutputter(formato);
> ---------------------
>
> I tried setting setIgnoreTrAXEscapingPIs to false, because I am not
> sure what this does exactly, but nothing seems to change.
>
> Any ideas?
>
>
> _______________________________________________
> To control your jdom-interest membership:
> http://www.jdom.org/mailman/options/jdom-interest/[email protected]
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<div class="moz-cite-prefix">Hi there.<br>
<br>
Escaping "<" and other the other characters '>', '&',
and '\r' is always done (with one exception...). The '\n' char is
also sometimes replaced with \r\n.<br>
<br>
if (ch == '<' || ch == '>' || ch == '&' ||
ch == '\r' || ch == '\n'<br>
|| strategy.shouldEscape(ch)) {<br>
......<br>
}<br>
<br>
To do anything else would be to produce broken XML.<br>
<br>
What you want is (likelye to be) broken XML and JDOM is not
designed to produce broken XML. Really the best way to solve your
problem is to do the right handling of your output. The code using
your XML should parse the data from your element and the parsing
process will un-escape the characters. The next best way to do
things is to make the actual HTML content valid XHTML and to parse
it and then add the Element content as JDOM objects to the JDOM
tree, and then output the complete JDOM document normally.<br>
<br>
The wrong way to do it wold be to override/extend the
AbstractXMLOutputProcessor and to 'hack' the code that does the
escaping.<br>
<br>
TrAXEscapePI concept is designed to support obscure functionality
in the XMLTransformation process (XSLT). Technically I think you
*can* use this concept to support not-escaping by having the
following JDOM content:<br>
<br>
Element emt = new Element("tag");<br>
emt.addContent(new
ProcessingInstruction(javax.xml.transform.Result.PI_DISABLE_OUTPUT_ESCAPING));<br>
emt.addContent(new
Text("<html><body><p></body></html>"));<br>
emt.addContent(new
ProcessingInstruction(javax.xml.transform.Result.PI_ENABLE_OUTPUT_ESCAPING));<br>
<br>
Then you will need to set Format.setIgnoreTrAXExcapingPIs to false
when you output the JDOM Content.<br>
<br>
The above is a *hack* and is not what I recommend that you do.<br>
<br>
Rolf<br>
<br>
<br>
<br>
On 09/01/2013 3:50 AM, SoTaNeZ wrote:<br>
</div>
<blockquote
cite="mid:CAJypjWf_ROGQTcLoi1_HHUMCJaY9tKWdb4NgdC24-VoJLo48-Q@mail.gmail.com"
type="cite">Hello.
<div><br>
<div>I have some XML elements which text is not plain, but
contains some HTML tags.</div>
<div>The thing is that when outputting these to an XML file the
characters "<" and ">" are changed into "&lt;" and
"&gt;" preventing its correct posterior HTML processing.</div>
<div>I tried using this EscapeStrategy:</div>
<div><br>
</div>
<div>------------------</div>
<div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>class
EscapeSimbolos implements EscapeStrategy {</div>
<div><br>
</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>public
boolean shouldEscape(char car) {</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>switch
(car) {</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>case
'<':</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>return
false;</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>case
'>':</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>return
false;</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>default:</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>return
false;</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>}</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>}</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>}</div>
</div>
<div>------------------</div>
<div><br>
</div>
<div>but with no effect. The code within the two case statements
is never reached, but the method is executed, so it seems that
these characters are converted before the EscapeStrategy gets
into action, or maybe I am doing something wrong.</div>
<div><br>
</div>
<div>This is the code to set the format:</div>
<div><br>
</div>
<div>---------------------</div>
<div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>Format
formato = Format.getPrettyFormat();</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>formato.setTextMode(TextMode.PRESERVE);</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>formato.setEscapeStrategy(new
EscapeSimbolos());</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>formato.setIgnoreTrAXEscapingPIs(true);</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>XMLOutputter
outputter = new XMLOutputter(formato);</div>
</div>
<div>---------------------</div>
<div><br>
</div>
<div>I tried setting setIgnoreTrAXEscapingPIs to false, because
I am not sure what this does exactly, but nothing seems to
change.</div>
<div><br>
</div>
<div>Any ideas?</div>
</div>
<br>
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<br>
<pre wrap="">_______________________________________________
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<a class="moz-txt-link-freetext" href="http://www.jdom.org/mailman/options/jdom-interest/[email protected]">http://www.jdom.org/mailman/options/jdom-interest/[email protected]</a></pre>
</blockquote>
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