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From: Carfield Yim on 30 Nov 2009 22:20

> I wish you lucks, then.
>
> Not sure it helps, but Verifier.isXMLCharacter(int) from JDOM will check
> a character is a valid XML character (this same method is called to
> raise the error you got.)
>
> Note it takes an int, not a char, as parameter. This is because it
> handles non-BMP characters. You might want to do that too.
>
> --
> Mayeul

Fixed, actually I can reuse API from JDOM to check if character is
valid for XML document, or JDOM text, here is the code samples


final String tempText;
final StringBuilder content = new StringBuilder();
if (item instanceof FileItem)
tempText = HeadItem.extendedDesc((FileItem) item);
else
tempText = item.getDesc();

/* from JDOM library... */
/* 159 */int i = 0;
for (int len = tempText.length(); i < len; ++i)
/* */{
/* 161 */final char ch = tempText.charAt(i);
/* 164 */if (Verifier.isHighSurrogate(ch))
/* */{
/* 166 */++i;
/* 167 */if (i < len) {
/* 168 */char low = tempText.charAt(i);
/* 169 */if (!(Verifier.isLowSurrogate(low))) {
/* 170 */continue;
/* */}
/* */}
/* */else {
/* 177 */continue;
/* */}
/* */}
/* 181 */if (!(Verifier.isXMLCharacter(ch)))
/* */{
/* 185 */continue;
/* */}
/* */content.append(ch);
/* */}
/* */
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