I am trying to let JMeter crowl my website to ensure a realistic stress test. I was able to extract the URLs from the home page and iterate on them. So I have a regular expression feeding a ForEach loop.
Now I am not able to let an HTTP Request take the output of the loop (Defined as a variable with a name) as its path.
Is there a general approach to setting the path of such a request. JMeter is taking something like:
${MyVar}
set in the path of the request as a string and is not replacing it with the actual value.
Given your Regular Expression Extractor and ForEach Controller configurations are correct everything should work fine. If you need any assistance with this provide the following screenshots:
Regular Expression Extractor configuration
Debug PostProcessor or Debug Sampler output in the View Results Tree listener showing several generated JMeter Variables
ForEach Controller configuration
HTTP Request sampler configuration (i.e. where do you put the variable)
Be aware that you can mimic crawling the site more easily using HTML Link Parser the relevant configuration would be as simple as
See How to Spider a Site with JMeter - A Tutorial to learn more about simulating websites crawling.
Related
I have recorded script using BlazeMeter plugin and I want to the use access token which I receive in successful login request, in another request. My Test plan looks like as below
Thread Group : [A]
|- HTTP Sampler - Login Page
|-Regular Expression Extractor [getToken]
|-HTTP Sampler - Other Page
|-Beanshell PreProcessor[Set Header in Authorization]
Regular Expression Extractor parameters and values like below :
Variable Name : token
Regular Expression : {“access_token”:”(.+?)"
Template : $1$
Match No. : 0
Beanshell PreProcessor script like below
import org.apache.jmeter.protocol.http.control.Header;
log.info("Start");
sampler.getHeaderManager().add(new Header("Authorization","Bearer"+vars.get("token")));
log.info(vars.get("token"));
Most probably your Regular Expression Extractor fails as your quotation marks look utterly suspicious. You can double check if the token variable really has the anticipated value using Debug Sampler and View Results Tree listener combination. Also check out jmeter.log file for any suspicious entries, if your Beanshell script fails - the cause will be printed there.
The response data of the Login Page seems to be JSON therefore it makes sense to use the JSON Extractor instead of the Regular Expression Extractor. It allows using JSON Path language in order to extract "interesting" bits of data from the responses. In your case the relevant JSON Path expression would be $.access_token
Since JMeter 3.1 it's recommended to use JSR223 Test Elements and Groovy language for scripting so consider migrating to the JSR223 PreProcessor and Groovy language (you can re-use the same code)
You don't even need the scripting, you can add Authorization header (as well as any other header) using HTTP Header Manager
Could you add debug sampler and try first to confirm your regular expression extractor working as expected? It should provide you the required value of token.
If your token has the required value, I will suggest you to add HTTP Header Manager config element by right clicking on HTTP sampler
HTTP Request => Add => Config Element => HTTP Header Manager
In this config element, you can visually add the Headers as below:
Please Note That:- You have not provided any space/hyphen(-) or between keyword Bear and token.
Refer this link for details :-
https://stackoverflow.com/a/24550552/1115090
I'm having some issues getting the variables from a Regular Expression Extractor to show in the View Results Tree.
Reg Ex and Test Plan
The Regular Expression Extractor is a child of the HTTP Request. The Debug Sampler and the View Results Tree are at the same level as the HTTP Request. I am trying to extract the Authorization Token.
API response
As you can see, I get a 200 response from the server with the Token.
View Results Tree with no RegEx variables
But I'm not even seeing the RegEx variables in the Debug Sampler. I would expect to see them, even if the Extractor didn't pull anything from the response. Am I missing a node? Looking in the wrong place? Using the wrong elements?
I've burned half a day researching and trying different things, please help.
Thanks.
Your regular expression is not correct, you should be using something like (.*) as your one will not match anything if you don't provide right boundary which you don't have. You can attempt sticking to line break character but it might not work if your token comes last
You're looking into wrong tab of the View Results Tree listener, JMeter Variables (including pre-defined ones) live under Response Data -> Response Body path
Check out How to Debug your Apache JMeter Script article to learn more about JMeter tests troubleshooting techniques.
I have a looping process that will extract some values from a web service (working) and loop through to pull all the information for each value (working).
I need to capture the whole return into a variable so I can modify it and post it back up later.
Screenshot:
When the "Baseline for ..." get kicks in, I get the proper response
But the "Get response" BeanShell PreProcessor is picking up old responses
Screenshot:
Given where my "Get response" object is, I would assume the:
vars.put("ResponceData", prev.getResponseDataAsString());
...would grab the response from "Baseline for ${ID} of site ${callSite}". Please help!
You are using wrong test element. Beanshell PreProcessor is being executed before request therefore it acts properly and returns response from the previous request instead of current one. You need to change it to the Beanshell PostProcessor and your code will start working as you expect.
It is recommended to avoid scripting where possible, if you need to save response data into a JMeter Variable you can do it using i.e. Regular Expression Extractor. According How to Extract Data From Files With JMeter article the relevant configuration will be something like:
Reference Name: ResponceData
Regular Expression: (?s)(^.*)
Template: $1$
If you face a JMeter limitation which cannot be worked around without using scripting make sure you are using the most performing scripting language, since JMeter 3.1 it is recommended to use JSR223 Test Elements and Groovy language
I have a series of interconnected pages to test using JMeter. The problem is that the initial page has a Javascript variable in source section which is more of a session variable. This variable is passed in the URL for subsequent pages.
So basically I would like to fetch this javascript variable when I load the initial page from the source section and pass it to next URL(s).
Is there a way I can achieve this using JMeter.
Are you able to see the session variable in the response of initial page?
(in view result tree listener)
If yes, then correlate this value and pass the variable in to next request (use regular expression extractor for fetching the value, still if you are finding some issue in correlating the value than please share the response of first request over here so that I can provide you regx for that)
People mostly Regular Expression Extractor to fetch dynamic values from previous responses, in general the process looks like:
Add Regular Expression Extractor as a child of the request which returns desired data
Use Perl5-style regular expression to match what you're looking for
Provide a template to choose match group - ususally $1$ if you looking for a single value
Provide a reference name to refer the extracted value, i.e. foo
Use extracted value as ${foo} where required
You can visualise JMeter Variables using Debug Sampler and View Results Tree listener combination.
The easiest way to debug your regular expressions is using View Results Tree listener in "RegExp Tester mode"
See How to debug your Apache JMeter script article for more information on troubleshooting your JMeter test.
I would like to profile a REST API using JMeter. I would like to write the test plan such that each user thread performs the following actions:
creates a new resource using HTTP POST
If HTTP 201 Created is received, then extract the new resource URL from the Location header of the HTTP response.
Subsequently update the resource using HTTP PUT
Loop in 3 and measure the response time
It's unclear to me how to use JMeter's conditional logic to break up the tests into these discrete parts. I would appreciate any insight anyone can provide on how to implement this.
You need to use If Controller to express this logic.
You can use Regular Expression Extractor to extract Response code (In field to check, check it and extract response code in a Variable)
Use the previously extracted variable in the If Controller condition