This was discussed in JSP list. I attach a method (I think it's from PurpleTech
FAQ)
public static String HTMLEncode(String text)
{
if (text == null) return "";
StringBuffer results = null;
char[] orig = null;
int beg = 0, len = text.length();
for (int i = 0; i < len; ++i){
char c = text.charAt(i);
switch (c){
case 0:
case '&':
case '<':
case '>':
case '"':
if (results == null){
orig = text.toCharArray();
results = new StringBuffer(len+10);
}
if (i > beg)
results.append(orig, beg, i-beg);
beg = i + 1;
switch (c){
default: // case 0:
continue;
case '&': results.append("&"); break;
case '<': results.append("<"); break;
case '>': results.append(">"); break;
case '"': results.append("""); break;
}
break;
}
}
if (results == null)
return text;
results.append(orig, beg, len-beg);
return results.toString();
}
Jay Macarty wrote:
> I have a servlet which needs to be able to show the user the source of an
> HTML file. In performing this same type function in other languages I simply
> read the text and converted the characters to their & equivalent. For
> example, <HTML> would become <HTML>
>
> I was wondering if there is an easier way to accomplish this task? If not,
> does someone have, or know of, existing Java code to do the conversions?
>
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> Phone: (972) 591-7385
>
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Instinet Corporation
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