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Index › Programming Questions & Help › Syntax Questions › Displaying "&" instead of &amp
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Displaying "&" instead of &amp (Read 3847 times)
steven
Displaying "&" instead of &amp
Nov 15th, 2007, 7:23pm  
Hi,

I'm using the proXML library to load some XML strings from a server.

My problem is when the string contains an "&" (which is the HTML code for "&") Processing displays "&" which is totally logic since it's what Processing receives. My problem is, I want to display "&" and not "&".

I've tried changing manually the XML file with "&" already inside them but I get the following error.

java.lang.RuntimeException: Illegal use of &. Use & entity instead. Line:138
at proxml.XMLInOut$Loader.handleEntity(XMLInOut.java:398)

I also tried to change the XML to the processing escape character but what got displayed was the "\u00..."

My next solution would be, in Processing, search the string for & and then replace it with "\u00..." but before I do that I was wondering if there is an easier way of converting these HTML characters to show them properly.

Thanks.

PS: I couldn't actually find the Processing escape characters for "&" in Fry/Reas's book. Anyone knows it? In my example I used another character to test my possible solutions.
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JohnG
Re: Displaying "&" instead of &a
Reply #1 - Nov 15th, 2007, 8:06pm  
Your code has to interpret & style entities itself. & is a special character in XML, so you can't just put a plain & in a file no matter how you try to treat it.

However, there is an easy way to change & into &

Code:
myString.replaceAll("&","&");
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fry
Re: Displaying "&" instead of &a
Reply #2 - Nov 15th, 2007, 8:16pm  
steven wrote on Nov 15th, 2007, 7:23pm:
PS: I couldn't actually find the Processing escape characters for "&" in Fry/Reas's book. Anyone knows it In my example I used another character to test my possible solutions.

that's because it's ascii, and doesn't need an escape sequence.
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steven
Re: Displaying "&" instead of &a
Reply #3 - Nov 15th, 2007, 9:49pm  
Thanks!
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robin sloan
Re: Displaying "&" instead of &a
Reply #4 - Nov 16th, 2007, 8:09am  
More generally, what you want to do is unescape the entire sequence -- sometimes you'll run into other characters that get escapes in URL encoding, too.

I use the string escape utils from Apache Commons --

http://commons.apache.org/lang/api/org/apache/commons/lang/StringEscapeUtils.html

-- which works great.
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ikbenmacje
Re: Displaying "&" instead of
Reply #5 - Oct 13th, 2009, 4:02am  
Hello,

I am trying to use the string escape from Apache Commons as sugested in former post, but I have some trouble getting it to work.

I downloaded the .jar (commons-lang-2.4.jar) and add it to my sketch but i gives an error when i try to run the sketch "Syntax error on token "enum", identifier expected"

I have the feeling I am forgetting something or not doing it right.

Any help or assistance would be greatly appreciated...

Thanks in Advance

Machiel
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Akshay Loke
Re: Displaying "&" instead of
Reply #6 - Jun 15th, 2010, 9:07am  
I am trying to do the exact same thing, and I am getting the same error.
Machiel, did you manage to solve the problem?

Can anyone guide me as to what I would have to do here?

Thanks,
Akshay
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