I have following strings :
"envelopeId": "fsadjhfkhdsgf", "ashgjkadsagagsalkjghsag": "gsajgks", "envelopeId": "fsadjhfkhdsgfgsd", "afshdj":"gas"
And I need to extract out all envelopeIds from this. I have tried different regex but nothing seems to work.
(?:"envelopeId": ")*(",)
(?:"envelopeId": ")*[\d\D](",)
What is wrong with the regex I am trying?
You may use
"envelopeId":\s*"([^"]+)"
And extract matcher.group(1) values. See the regex demo.
Details
"envelopeId": - a literal string\s* - 0+ whitespaces" - a " char([^"]+) - Group 1: any 1+ chars other than "" - a " char.String s = "\"envelopeId\": \"fsadjhfkhdsgf\", \"ashgjkadsagagsalkjghsag\": \"gsajgks\", \"envelopeId\": \"fsadjhfkhdsgfgsd\", \"afshdj\":\"gas\"";
String key = "envelopeId";
Pattern pattern = Pattern.compile("\"" + Pattern.quote(key) + "\":\\s*\"([^\"]+)\"");
Matcher matcher = pattern.matcher(s);
while (matcher.find()){
System.out.println(matcher.group(1));
}
Output:
fsadjhfkhdsgf
fsadjhfkhdsgfgsd
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