I have a regex Debug Sampler for printing the environment variable files of JMeter, system.properties etc.
Then I do a regex Extractor postprocessing as follows:
Unfortunately, when I add an Response assertion for the filed regex variable ${regex} I get null in the view results tree of the run.
How do I get the value of the regex variable apart from null?
Thanks
Gerrit
EDIT:
Using the Post-Processor > Regular Expression Extractor, it is simple to extract any portion of the response.
Since JMeter 2.4, the listener View Results Tree include a RegExp Tester to test regular expressions directly on sampler response data
You can use the following:
Reference Name: regex
Regular Expression: ([A-Z][a-z])
Template: $1$
Match No.: 1
The template is used to create a string from the matches found. This is an arbitrary string with special elements to refer to groups within the regular expression. So to refer to group 1, you would use $1$..
Use the corresponding variable to access the match. ${regex}
The variables are set as follows:
regex_matchNr - Number of matches found, possibly 0
regex_n - (n = 1, 2, etc..) Generated by the template
regex_n_gm - (m = 0, 1, 2) Groups for the match (n)
regex - By itself it is always set to the default value
regex_gn - Not set at all
Related
I am using regex to get value from response header in JMeter,
I try to get the last value in query tt_unixtime and I failed.
Can someone please advise how to user regex to get the last value?
I Created a variable called time44444444 and I want it to get the value from the response,
the problem is that it stored nothing.
You have a few issues in your Regular Expression Extractor settings for getting the value matched:
Apply To: Response Headers
Regular expression should be (\w+) - any alphanumeric characters
Template should be $1$ - first group
Match No. should be be 1 - find first match
The template used to create a string from the matches found. This is an arbitrary string with special elements to refer to groups within the regular expression. The syntax to refer to a group is: '$1$' to refer to group 1
My Test Plan (not working):
+ WebSocket Sampler
- Regular Expression Extractor
My Regular Expression:
Response data:
[Message 1]
0{"sid":"1BdTy3e4-jfrVM67AAAR","upgrades":[],"pingInterval":25000,"pingTimeout":60000}
How to get 'sid' ?
Regular expression "sid":"(.+?)" is ok.
Try use Match no(0 for Random) = 1
For Regex test see here https://regex101.com/r/yW4oR3/1
If you add a Debug Sampler after your request and look into the View Results Tree listener, you will see that your Regular Expression returns only one match:
As per Regular Expression Extractor documentation:
Match No. Indicates which match to use. The regular expression may match multiple times.
Use a value of zero to indicate JMeter should choose a match at random.
A positive number N means to select the nth match.
Negative numbers are used in conjunction with the ForEach Controller - see below.
Hence your Match No: setting is incorrect, you need either to remove 3 or change it to 1
See How to Debug your Apache JMeter Script guide for more information on identifying the cause of your JMeter test failure
I have a JMeter HTTP Request that returns
{
"Token" : "VwAMVWXTakkdffdkEj1I9IiTr8DlYa89fK4yimmQNWSitIY1qBb1Qbs1FU9CfZHWMMlTed3hHOaBD7vJGNh9ZugFZuANtAomk17vIjg3Zgl1Fp0kulb6UTsbnkyyGNwNMGR"
}
in the response data. The string after the colon will change each time. I need this string to then be passed to another HTTP request. I have the rest set up but I am struggling with the regex, I get the default constantly.
Currently the regex looks like -
"Token":"(.+?)"
but doesn't work.
Can anyone help?
Thanks
Use a positive lookbehind,
(?<=\"Token\" : ).*
It matches all the characters which are just after to the string "Token" :
DEMO
OR
(?<=\"Token\"\s:\s\")[^\"]*
If you want the strings inside double quotes then use above regex.
DEMO
Below regex would capture the matched characters,
(?<=\"Token\"\s:\s\")([^\"]*)
Your return is JSON data, so the best option would be to handle it as JSON, which also would make your application far easier to maintain and evolve, when the data you are handling gets more complicated than just one attribute. Plus, you can handle it easily in JavaScript. Suggested reads:
Jmeter extracting fields/parsing JSON response
Use BSF Postprocessor to parse JSON response and save the properties as JMeter variables
Your regular expression needs to account for whitespace. I'd recommend using Regular Expression Extractor, which will make this alot easier for you.
Reference Name: FOO
Regular Expression: "Token" : "(.+?)"
Template: $1$
Use corresponding variable to access the match. ${FOO}
The variables are set as follows:
FOO_matchNr - Number of matches found, possibly 0
FOO_n - (n = 1, 2, etc..) Generated by the template
FOO_n_gm - (m = 0, 1, 2) Groups for the match (n)
FOO - By itself it is always set to the default value
FOO_gn - Not set at all
You can use regex ([^"]+) when you have received response from HTTP request.
Example:
"Token":([^"]+) --> Not required to add double quotation.
I want to find a specific number from a HTML response.
For example, I want to extract 3 from publicationID3publicationID.
Does someone know a solution with regexp?
Add Regular Expression Extractor Post Processor as a child of the request, which returns to you this string.
Configure it as follows:
Reference Name: publicationID (you can use any variable name here)
Regular Expression: publicationID(\d+)publicationID
Template: $1$
other fields can be left blank.
You can later refer publication ID as ${publicationID} or ${__V(publicationID)}
You can see what matches does your Regular Expression return using View Results Tree Listener (select RegExp Tester from dropdown). Another option is Debug Sampler again with combination with View Results Tree.
you can use \d to match a number using regex.
I have a JMeter Regular Expression Extractor which searches for the following regular expression:
myId=[0-9]{10}
This retrieves the 10 digit numeric id number from my websites form. I then set a "Reference Name" of myId for the id number. My template value is $0$ and my match No. is set to blank.
In my HTTP Request, I then pass a parameter value of:
${myId}
When I run my JMeter test, it inserts text in the form of:
myId=myId=1234567890
How do I get rid of the duplicate myId=?
Not sure about JMeter's implementation of RegEx but normally
myId=[0-9]{10}
would match everything, including myId=. What you need is to define capture groups that you want extracted using () and then you will reference the capture group array and get the item you want. E.g.
myId=([0-9]{10})
group 0 would still be the whole thing but group 1 would be just the numeric portion as delimited by (), i.e. without myId=. Hope this helps.