[quote]Character reference "" is an invalid XML character.
這裏的"表示是ASCII碼的第幾個控制字符[/quote]
同時,'&'(實體引用的開始)和'<'(控制符的開始)作爲XML的標準控制字符[b]必須[/b]不能出現在正常內容中,如果出現的話,需要轉義。XML提供CDATA結構段用來指示XML解析器不要對CDATA段中的數據做處理。但如果在CDATA段中包含CDATA段的關閉符']]>'的話,還是會出現解析問題。
[color=blue]正常CDATA段示例[/color]
[quote]CDStart ::= '<![CDATA['
CData ::= (Char* - (Char* ']]>' Char*))
CDEnd ::= ']]>'[/quote]
用類似的代碼解決這類煩人問題[/size]
/**
* @see http://www.w3.org/TR/2004/REC-xml-20040204/#charsets
* All supported characters
* @param data
* content in each field
* @return
* regular content is filtered from illegal XML char
*/
public static String checkXmlChar(String data) {
StringBuffer appender = new StringBuffer("");
if (StringUtils.isNotBlank(data)) {
appender = new StringBuffer(data.length());
for (int i = 0; i < data.length(); i++) {
char ch = data.charAt(i);
if ((ch == 0x9) || (ch == 0xA) || (ch == 0xD)
|| ((ch >= 0x20) && (ch <= 0xD7FF))
|| ((ch >= 0xE000) && (ch <= 0xFFFD))
|| ((ch >= 0x10000) && (ch <= 0x10FFFF)))
appender.append(ch);
}
}
String result = appender.toString();
return result.replaceAll("]]>", "");
}