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jmeterbeanshell

How to write script in Beanshell preprocessor In Jmeter tool

enter image description here ID[![][2]]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.

Solution

  • 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.