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Jmeter Beanshell could not recognize Set <String>

I want to delete data in redis

before taking a sample to put the code in the Beanshell Preprocessor. But the code doesn't work, just like Beanshell can't recognize Set, part of my code is below:

import redis.clients.jedis.Jedis;
import java.util.Set;

String new_pattern = "*WITHDRAW_RISK_CONTROL_*";
Set<String> keysSet = null;
System.out.println("here****************");

and Set<String> keySet =null

doesn't work. I imported Set import java.util.Set;

Is this a Jmeter problem? or for some reason?

Second question: it can recognize the class Jedis

in the Jedis jar. But it can't support Jedis JedisPoolConfig why?

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3 answers


Beanshell does not support Generics.

JSR223PreProcessor + Groovy should be used instead:



Note that there is a Redis DataSet if your request is:

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  • The diamond operator was introduced in Java 7 which came out in 2011.
  • JMeter ships with Beanshell 2.0b5 released in 2005.

As such, Java 7 features are not expected to be supported by the rather outdated Beanshell interpreter. It should work if you remove the bit <String>

.

Beanshell set initialization



I expect the problem to live somewhere else. To debug your Beanshell script you can try the following approaches:

  • Add the directive debug();

    at the very beginning of your script. This will output debug information to STDOUT (where you expect your line to here****************

    )

  • Wrap suspicious code in try / catch block like

    try {
    // your Beanshell
    // code here

} catch (Throwable ex) {
    log.info("Something went wrong", ex);
}

    Inspect the jmeter.log file for details of the failure.

See How To Use BeanShell: A Favorite Built-In JMeter Component for more information on Beanshell scripting in JMeter.

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Instead of "Set keysSet" you can use "Object keysSet". He solved my problem.

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