带有流口水的正则表达式（特殊字符/ *）

Question

I'm trying to make a rule to catch invalid characteres. Those are & < > /* ' " --

I already managed to "catch" all the symbols except the /*

My code is:

rule "Invalid Chars"
when
    c : Class ( field matches ".*[&<>'\"].*|.*(--).*" )
then
    // DO SOMETHING     
end

My regex is below. But when I try to add the /* symbol. I get this regex

.*[&<>'\"].*|.*(--).*|.*(\/\*).*

But when I try to run I get this error:

line 1:28 no viable alternative at character '*' line 1:33 mismatched character '' expecting '"' java.lang.IllegalStateException: ### errors ### [Error: illegal escape sequence: *]~

How to "catch" all these invalid characters?

Answer 1

Here's minimal Test with * escaped but / not:

public static void main(String[] args) {
    if("Hallo /* Test ".matches(".*[&<>'\"].*|.*(--).*|.*(/\\*).*")) {
        System.out.println("ILLEGAL");
    }
}

Answer 2

Try this one:

String pattern = "[&|<|>|'|\"|]|(--)|(\\/\\*)";
Pattern r = Pattern.compile(pattern);
Matcher m = r.matcher("YOUR STRING TO FIND MATCHES");
while (m.find( )) {
    System.out.println("Matched value: " + m.group(0) );
}