How to write script in Beanshell preprocessor In Jmeter tool

Question

]2I am trying to write script in Beanshell preprocessor to manipulate an input text file containing a list of locations. I want to pass Location 1 as input for the 1st user's destinations, Location 2 as second user's destination and so on... I also want to send a combination of locations for some users. Please help me with this.

Thanks in advance.

Dmitri T · Accepted Answer · 2015-09-07 15:28:38Z

1

If you need to parametrize your test so different users would use different locations from the text file - you don't even need Beanshell. Take a look at __StringFromFile() function - it reads next line from the specified file each time it's being called.

If you still want to use Beanshell - just consider it Java as it's almost Java compliant. To be completely sure that your test will work - write it J2SE 1.4-way.

Be aware that if your script logic is complex and it does something "heavy" and/or if you plan to produce immense load - it's better to consider JSR223 PreProcessor and Groovy scripting language as:

Groovy is even more Java-compliant than Beanshell
Groovy engine performance is much higher

See Beanshell vs JSR223 vs Java JMeter Scripting: The Performance-Off You've Been Waiting For! guide for different scripting engines benchmarks, instructions on installation of groovy engine and scripting best practices.

answered Sep 7, 2015 at 15:28

Dmitri T

169k6 gold badges91 silver badges149 bronze badges

Sign up to request clarification or add additional context in comments.

5 Comments

user3627319 Over a year ago

Hi Dmitri T, Please refer my test plan design as above. I have written a script to capture the inputs from a CSV file, manipulate that and prepare input for the request. Please suggest me how to proceed with this? Also what variable to pass as the parameter value in the request.

Dmitri T Over a year ago

After you perform data manipulation you can either set up a JMeter Variable as vars.put("varName", varValue); and refer it in the next sampler as ${varName} or directly using sampler shorthand which in case of HTTP Request Sampler will be HTTPSamplerProxy. See JavaDoc for the required component for details and How to Use BeanShell: JMeter's Favorite Built-in Component guide for example use cases

user3627319 Over a year ago

Hi Dmitri T, here my variable is RANDOM_NUMBER and I am passing that in my request. But in the request no random number is passing instead the variable itself is passed as is. Please suggest what changes I need to do in my Beanshell script?

Dmitri T Over a year ago

Pass it as ${RANDOM_NUMBER}. Use Debug Sampler to verify its value

user3627319 Over a year ago

Hi Dmitri T, Ya, Tried this already.Not helping me. in the request tab of View Results Tree the value is passed as is : ${RANDOM_NUMBER} . Not the calculated value.

Collectives™ on Stack Overflow

How to write script in Beanshell preprocessor In Jmeter tool

1 Answer 1

5 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

5 Comments

Your Answer

Sign up or log in

Post as a guest

Related