I'm new to JMeter BeanShell PreProcessor function.
For a test I'm trying to print sample URL address.
From the tutorial I have the follownig code:
org.apache.jmeter.samplers.SampleResult;
String currentURL = SampleResult.getUrlAsString();
print(currentURL)
But I get error "Attempt to resolve method: getUrlAsString() on undefined variable", how to define this variable first?
This means the SampleResult does not exist.
You need to use prev as per this doc:
http://jmeter.apache.org/usermanual/component_reference.html#BeanShell_PreProcessor
Which references this javadoc:
http://jmeter.apache.org/api/org/apache/jmeter/samplers/SampleResult.html#getUrlAsString--
Be aware that since JMeter 3.1 it is recommended to use JSR223 Test Elements and Groovy language for any form of scripting in JMeter tests. So consider migrating to Groovy as soon as possible.
If you are using a PreProcessor it means that you don't have any SampleResult as sampler has not been yet executed. So you need to use sampler shorthand which is resolved into HTTPSamplerProxy like:
sampler.getUrl() as String
Demo:
More information: Apache Groovy - Why and How You Should Use It
Related
I am using Beanshell sampler with java code to compare the two files line by line. I want to fail the Beanshell sampler if comparison failed at any line. I see always my beanshell sampler is sucess in view results treee even the comparison failed or passed. So any one please give me a idea how to fail the sampler.
Note: I used Beanshell Assertion as well but its not worked.
View Results Tree Image
Beanshell Sampler with Beanshell Assertion
boolean differenceInFile = false;
SampleResult.setSuccessful(differenceInFile);
IsSuccess=differenceInFile;
line #2 and line #3 is what you need in your bean shell sampler to pass / fail depending on your file comparasion
Sample JMX File
It will show you as an xml, try to download it
There is SampleResult pre-defined variable which you can use for setting the sampler passed or failed, define response code, response message, response body, etc.
So something like:
if (there_are_differences) {
SampleResult.setSuccessful(false)
SampleResult.setResponseCode("500")
SampleResult.setResponseMessage("Files are different")
}
In the assertion you have AssertionResult for the same.
Also be aware that you should be using JSR223 Test Elements and Groovy language for scripting since JMeter 3.1 so it might be a good option for migration.
More information on JMeter API shorthands available for the JSR223 Test Elements - Top 8 JMeter Java Classes You Should Be Using with Groovy
I have a HTTP request sampler configured. In the request body, I call out to a beanshell function I wrote:
${__BeanShell(createHeader("GET"\,"Customer"\,"${__UUID}"\,"${__time(yyyy-MM-dd'T'hh:mm:ss)}"))}
The function just builds some request strings with the passed-in parameters. I want to remove the jmeter function calls (__UUID and __time), and call them directly from within the beanshell function. I could not find a way to do that.
Thanks
Don't inline JMeter Functions or Variables into scripts, in your case you will have to go for code-based equivalents instead, to wit:
__UUID() -> UUID.randomUUID().toString()
__time() -> new java.text.SimpleDateFormat("yyyy-MM-dd'T'hh:mm:ss").format(new Date())
Since JMeter 3.1 it's recommended to use JSR223 Test Elements and Groovy language for scripting, in your case it would be __groovy() function. If you want to re-use createHeader method - you can put it into a separate .groovy file and define groovy.utilities property pointing to this file.
See Apache Groovy - Why and How You Should Use It article for more information on using Groovy scripting in JMeter tests.
I want print my json response in jmeter. I used beanshell but it shows error. Below is the line to print json object extracted in "data":
log.info("========"+${data});
Don't ever inline JMeter Functions or Variables into scripts, they may resolve into something which will cause compilation/interpretation failure, use code-based equivalents instead or pass functions/variables via "Parameters" section.
Exhibit A: using vars shorthand
log.info("========" + vars.get("data"));
Exhibit B: using "Parameters" section
Using Beanshell isn't the best scripting option, consider migrating to JSR223 Elements and Groovy language as Beanshell has known performance problems. Moreover, Groovy has built-in JSON support See Apache Groovy - Why and How You Should Use It for details.
And finally your ${data} variable might not be defined (i.e. your extractor fails), in this case you will get interpretation failure on attempt to refer it as ${data}, double check its value using Debug Sampler and View Results Tree listener combination.
I am trying to use the variables captured in the Debug Sampler in Jmeter and then convert those variables into some other value. And then use it somewhere in the script.
I have added a BeanShell Sampler along with the Debug Sampler and tried to get the variables displayed in the Debug Sampler.
Below is the piece of code I have written in Jmeter.
Jmeter
Is my approach correct? Am completely new to Jmeter and have little Java knowledge. So please help me here and let me know how can I convert or use a variable through a Custom code in Jmeter.
It is almost correct, you have a couple of syntax errors (missing closing bracket and undefined SomeCharacter)
Also it is better to use JSR223 Elements and Groovy language rather than Beanshell, as Groovy performance is much better and it is more Java-compliant, see Groovy Is the New Black article for detailed explanation.
Final code should look something like:
def myVariable = vars.get("Corr_ContextN")
if (myVariable.equals("002056653")) {
vars.put("myvariable1", "SomeCharacter")
}
Keep in mind that you are not changing original Corr_ContextN, you are creating new variable myvariable1. Also in order to see new variable you need to move the Debug Sampler after the Beanshell Sampler
Your got the concept but your code has the following errors:
imports are wrong and useless. You only need to import Classes for unbound variables, ie the ones that are advertised in the component.
There's a missing ')' in the if clause
SomeCharacter is not defined
And you should avoid Beanshell and favor JSR223 Test Element with Groovy as per those recommandations:
http://www.ubik-ingenierie.com/blog/jmeter_performance_tuning_tips/
Note that there is also a __groovy function for your use case.
I'm finding the way to use the variable sampler in JSR223 Sampler, JSR223 PreProcessor, JSR223 PostProcessor, and all other JSR223 script.
There are some other variables like vars, props, prev, SampleResult. I can use them easily.
For example:
vars: vars.get("VARIABLE_NAME"), vars.put("VARIABLE_NAME","VALUE"), ...
props: props.get, props.put, ...
prev: prev.getTime(), prev.isSuccessful(), prev.getLatency(), ...
SampleResult: SampleResult.getResponseCode(), SampleResult.getResponseMessage(), ...
But I don't know how to use variable sampler. Only thing I can do with this variable is:
sampler.sample(): It helps to returns the Name of current Sampler
So, could anyome please let me know there is any other way to use this variable?
Thanks in advance!
For JSR223 Sampler sampler variable stands for JSR223Sampler, see the JavaDoc for all available methods and fields.
When it comes to JSR223 Pre or Post Processor - in that case sampler variable stands for parent sampler class instance, for instance in case of HTTP Request it will be HTTPSamplerProxy, for JDBC Request - it will be JDBCSampler and so on.
You can check exact class using Groovy expression like:
log.info(sampler.getClass().getName())
You can check How to Use BeanShell: JMeter's Favorite Built-in Component guide for more information on pre-defined variables and their usage. It is applicable for Groovy as well.
sampler is a Sampler object. you can use whatever the methods available here, not only methods declared in Sampler class but also the methods in super classes/interfaces like TestElement.
For example:
sampler.sample() - returns sampler's name
sampler.setProperty() - set a property by specifying key, value
sampler.setThreadName() - set thread name for the sampler.