Question

I have the following String:

\018attribute1=value1\028attribute2=value2\033attribute3=value3

Note: the "\0xx" is a hard string no special character include and "\0xx" is random. I get this string from an api and it contains the “\” character.

I want to extract attribute names and attribute values

how to do it?

Answer 1

You need to escape the \ character twice. Once for Java, and once for regex. This turns it into \\\\. Then you can use Pattern and Matcher to build a map of your values:

Pattern p = Pattern.compile("\\\\0..([^=]+)=([^\\\\]*)");
Matcher matcher = p.matcher("\\018attribute1=value1\\028attribute2=value2\\033attribute3=value3");
Map<String, String> attributes = new HashMap<String, String>();
while (matcher.find()) {
    attributes.put(matcher.group(1), matcher.group(2));
}