Jmeter Regular expression match number - regex

Question

I have two values to correlate and I am able to capture them in two parameters successfully. I am taking random values using -1 in match number, but I actually wanted in a way like, let's say my first value randomly take the match number as 7 and I want my second value also should take the same match num as 7.
Please help me how I can simulate this .

Answer 1

Unfortunately, (as you've discovered), JMeter determines the 'random' independently. What you'll need to do is capture each potential value (with a -1) for both of var1 and var2. Then after your Regexes, add a Beanshell Postprocessor that gets a random number n, then picks the nth var1 and var2:
String random_number = Integer(random.nextInt(vars.get("var1_name_matchNr"))).toString;
vars.put("var1_name_chosen",vars.get("var1_name_" + random_number));
vars.put("var2_name_chosen",vars.get("var2_name_" + random_number));

Answer 2

If I understood correctly, you want to extract random regex value, and put it into 2 variables. If so, I would suggest doing something like...
After you get random regex value, add beanshell in which you will paste value you got with regex into the second variable.
So if your variable in regex is "foo1", just add beanshell sampler with:
vars.put("foo2", vars.get("foo1"));
EDIT:
This would be better as Java sampler, but I think it should work in BeanShell sampler as well.
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.apache.jmeter.samplers.SampleResult;
import org.apache.jmeter.threads.JMeterContextService;
import java.util.ArrayList;
import java.util.Random;
String previousResponse = JMeterContextService.getContext()
.getPreviousResult().getResponseDataAsString();
String locationLinkRegex = "\"locationId\": (.+?),";
String myLocationId = RegexMethod(previousResponse, locationLinkRegex,
true);
String myLocationLink = RegexMethod(
previousResponse,
"\"locationId\": ".concat(myLocationId).concat(
", \"locationLink\":(.+?))\""), false);
JMeterContextService.getContext().getVariables()
.put("locationId", myLocationId);
JMeterContextService.getContext().getVariables()
.put("locationLink", myLocationLink);
private static String RegexMethod(String response, String regex,
Boolean random) {
Random ran = new Random();
String result = "No matcher!";
ArrayList<String> allMatches = new ArrayList<String>();
allMatches = null;
if (random) {
Matcher m = Pattern.compile(regex, Pattern.UNICODE_CASE).matcher(
response);
while (m.find()) {
allMatches.add(m.group());
}
result = allMatches.get(ran.nextInt(allMatches.size()));
} else {
Matcher m = Pattern.compile(regex, Pattern.UNICODE_CASE).matcher(
response);
m.find();
result = m.group(1);
}
return result;
}
Exception handling needs to be implemented as well...
EDIT2:
And the Regex-method as recursive (returns both values as CSV, and can be use only if locationId is unique):
private static String RegexMethod(String response, String regex) {
Random ran = new Random();
String result = "No matcher!";
List<String> allMatches = new ArrayList<String>();
// Find LocationId:
Matcher m1 = Pattern.compile(regex, Pattern.UNICODE_CASE).matcher(
response);
while (m1.find()) {
allMatches.add(m1.group());
}
result = allMatches.get(ran.nextInt(allMatches.size())).concat(",");
// Find LocationLink and return the CSV string:
return result += RegexMethod(response, "\"locationId\": "
.concat(result.substring(result.length()-1)).concat(", \"locationLink\":(.+?))\""));
}