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.
Related
Im getting this response from a websocket
a["MESSAGE\ndestination:/user/p0000450/queue/bets/place/status\ncontent-type:application/json\nsubscription:/queue/bets/place/status-1\nmessage-id:p0000450-79\ncontent-length:139\n\n{"id":"c00656b318","groupId":"113686950","status":"PLACED","code":"0","message":"BetSlip with No.113686950 has been accepted","context":{}}\u0000"]
I would like to extract the betslip no.
Cant seem to generate regex that will extract this? please assist
i am planning to use regex extractor and beanshell postprocessor to save the data to excel for all responses
From the provided info it's hard to figure out all the possible formats of the "betslip number", but try this:
\bBetSlip with No\.\s*(\d+)\b
It captures any number of digits before the "BetSlip with No."-string.
Demo: https://regex101.com/r/NKfVm4/1
The easiest solution would be just going for the Boundary Extractor, all you need to do is to provide "left" and "right" boundaries and JMeter will fetch everything in-between:
So if you give:
Left boundary as BetSlip with No.
and right boundary as has been accepted
you will get what you're looking for.
If you have to do this using Regular Expression Extractor you can go for something like:
BetSlip with No.(\d+) has been accepted
Where:
() - grouping
d - matches any digit
+ - repetition
\ - escape of meta character
More information: JMeter Regular Expressions
In a response : there is a string like this.
,"Software":"abcde",
and i want to select abcde
i write the regular Expression as ,"Software":"([^"]+)",
then i used this variable in a GET request and a POST request.
in GET request it works but in POST request doesnt.
when i look at the post request i see some % characters. but they are not included in abcde string.
in abcde string some special characters like + and / may be present. and they will not transmitted properly to the request.
Why do yo think so? And are there any solution for this?
Check the variable value using Debug Sampler and View Results Tree listener combination, if the variable contains these "special" characters and they should not be there - amend your regular expression accordingly
If your response is in JSON format it worth considering switching to JSON Extractor
With regards to these % and /, can it be connected with URL Encoding?
I have JSON response from which i want to extract the "transaction id" value i.e (3159184) in this case and use it in my next sampler. Can somebody give me regular expression to extract the value for the same. I have looked for some solutions but it doesn't seem to work
{
"lock_release_date": "2021-04-03T16:16:59.7800000+00:00",
"party_id": "13623162",
"reservation_id": "reserve-1-81b70981-f766-4ca7-a423-1f66ecaa7f2b",
"reservation_line_items": [
{
"extended_properties": null,
"inventory_pool": "available",
"lead_type": "Flex",
"line_item_id": "1",
"market_id": 491759,
"market_key": "143278|CA|COBROKE|CITY|FULL",
"market_name": "143278",
"market_state_id": "CA",
"product_name": "Local Expert",
"product_size": "SOV30",
"product_type": "Postal Code",
"reserved_quantity": 0,
"transaction_id": 3159174
}
],
"reserved_by": "user1#abc.com"
}
Here's what i'm trying in Jmeter
If you really want the regular expression it would be something like:
"transaction_id"\s?:\s?(\d+)
Demo:
where:
\s? stands for an optional whitespace - this is why your expression doesn't work
\d+ stands for a number
See Regular Expressions chapter of JMeter User Manual for more details.
Be aware that parsing JSON using regular expressions is not the best idea, consider using JSON Extractor instead. It allows fetching "interesting" values from JSON using simple JsonPath queries which are easier to create/read and they are more robust and reliable. The relevant JSON Path query would be:
$.reservation_line_items[0].transaction_id
More information: API Testing With JMeter and the JSON Extractor
Use JSON Extractor for JSON response rather using Regular Expression extractor.
Use JSON Path Expressions as $..transaction_id
Results:
Simplest Regular Expression for extracting above is:
transaction_id": (.+)
Where:
() is used for creating capture group.
. (dot) matches any character except line breaks.
+ (plus) matches 1 or more of the preceding token.
(.+?) could be used to stop looking after first instance is found.
i.e. ? makes the preceding quantifier lazy, causing it to match as few characters as possible. By default, quantifiers are greedy, and will match as many characters as possible.
I use a jmeter for REST testing.
I have made a HTTP Request, and this is the response data:
{"id":11,"name":"value","password":null,"status":"ACTIVE","lastIp":"0.0.0.0","lastLogin":null,"addedDate":1429090984000}
I need just the ID (which is 11) in
{"id":11,....
I use the REGEX below :
([0-9].+?)
It works perfectly but it will be a problem if my ID more than 2 digits. I need to change the REGEX to :
([0-9][0-9].+?)
Is there any dynamic REGEX for my problem. Thank you for your attention.
Regards,
Stefio
If you want any integer between {"id": and , use the following Regular Expression:
{"id":(\d+),
However the smarter way of dealing with JSON data could be JSON Path Extractor (available via JMeter Plugins), going forward this option can be much easier to use against complex JSON.
See Using the XPath Extractor in JMeter guide (scroll down to "Parsing JSON") to learn more on syntax and use cases.
I suggest using the following regular expression:
"id":([^,]*),
This will first find "id": and then look for anything that is not a comma until it finds a comma. Note the character grouping is only around the value of the ID.
This will work for ANY length ID.
Edit:
The same concept works for almost any JSON data, for example where the value is quoted:
"key":"([^"]*)"
That regular expression will extract the value from given key, as long as value is quoted and does not contain quotes. It first finds "key": and then matches anything that is not a quote until the next quote.
You can use the quantifier like this:
([0-9]{2,}.+?)
It will catch 2 or more digits, and then any symbol, 1 or more times. If you want to allow no other characters after the digits, use * instead of +:
([0-9]{2,}.*?)
Regex demo
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