How to save Jmeter Variables to csv file

Question

Does anyone knoe how to save specific Jmeter Variables into a csv file? I have already tried this topic with no succes: Write extracted data to a file using jmeter and this code:

FileWriter fstream = new FileWriter("result.csv",true);
BufferedWriter out = new BufferedWriter(fstream);
out.write(${account_id});
out.close();

Thank you.

Answer 1

1. Replace your out.write(${account_id}); stanza with out.write(vars.get("account_id"));
2. It is better to close fstream instance as well to avoid open handles lack
3. If you're going to reuse this file, i.e. store > 1 variable, add a separator, i.e. new line

Final code:

FileWriter fstream = new FileWriter("result.csv",true);
BufferedWriter out = new BufferedWriter(fstream);
out.write(vars.get("account_id"));
out.write(System.getProperty("line.separator"));
out.close();
fstream.close();

See How to use BeanShell: JMeter's favorite built-in component for comprehensive information on Beanshell scripting

Answer 2

You can use this code in your BeanShellPostProcessor. It may help You.

String acid="${account_id}";
FileWriter fstream = new FileWriter("result.csv",true);
fstream.write(acid+"\n");
fstream.close();