can somebody help me how to create regex from this? I need only text after a_n: " so I need only this text. e.g. jgoijODIJGojsklfj4dgdg_797gsdg-df_gsdfh-dhfGSDhfdsg-dfg
{
"a_n": "jgoijODIJGojsklfj4dgdg_797gsdg-df_gsdfh-dhfGSDhfdsg-dfg",
"type": "something",
"uuser": "userid",
"expire": "6018"
}
If you can, just use a JSON parser to get the value. Otherwise you can use
/{.*\"a_n\": \"(.*)\".*/
You can achieve this with JSONStream.
cat file.json | JSONStream '.a_n'
And also with jq:
jq .a_n file.json
Please have a look (how to use a regular expression to extract json fields?)
regex should be,
/"a_n":\ ?"((\\"|[^"])*)"/i
To extract this in JMeter:
Add a jp#gc - JSON Path Extractor under your request sampler.
To extract the required data, you have to set like this:
Your extracted value will be saved in the variable Jsonvar.
Now You can use this variable other subsequent requests.
JMeter's Regular Expression Extractor uses Perl-5 style regular expressions so the relevant configuration would be:
Regular Expression: "a_n": "(.+?)"
Template: $1$
Also be aware that it makes more sense to use JSON Extractor to work with JSON responses. The relevant JSON Path query would be as simple as $.a_n
Demo:
More information: API Testing With JMeter and the JSON Extractor
Related
I'm using the regular expression extractor in JMeter to extract data from a parameter.
However, the data is not being extracted.
Response:
{
"access_token": "8d06ba17-2e51-31d2-aa55-25e4a3ecd33b",
"expires_in": 7200
}
Extractor:
Name reference: token
Regular expression: "access_token": "(.+?)"
Match: $1$
Request parameter use
v1/api/users?client=${token}
Use instead JSON Extractor with JSON Path Expressions as $.access_token
JSON PostProcessor enables you extract data from JSON responses using JSON-PATH syntax. This post processor is very similar to Regular expression extractor. It must be placed as a child of HTTP Sampler or any other sampler that has responses. It will allow you to extract in a very easy way text content
Your access_token is a GUID-like structure so you can use the following regular expression instead:
([A-Fa-f0-9]{8}[\-][A-Fa-f0-9]{4}[\-][A-Fa-f0-9]{4}[\-][A-Fa-f0-9]{4}[\-]([A-Fa-f0-9]){12})
Alternatively you can try to secure yourself by adding optional whitespace meta character like:
"access_token"\s?:\s?"(.+?)"
More information:
JMeter: Regular Expressions
Perl 5 Regex Cheat sheet
And finally your response is in JSON format so it makes more sense to use JSON Extractor, the relevant JsonPath query would be as simple as:
$.access_token
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.
This is getting generated in a request output in Jmeter and I need to capture the dynamic value.
<update id="javax.faces.ViewState"><![CDATA[-8480553014738537212:-8925834053543623028]]></update>
the - (hyphen) symbol coming in the output is also dynamic.
I have tried handling this using
<update id="javax.faces.ViewState"><![CDATA[(.+?)]]></update>
But this is not helping. Please suggest.
The correct way to grab the data is by using the XPath Extractor with the following XPath:
//update[#id='javax.faces.ViewState']/text()
It gets the update tags that have id attribute with the javax.faces.ViewState value and extracts the text from these nodes.
Your regex is not correct because the [ (and literal dots) must be escaped in the regular expressions, and can be fixed as <update\s+id="javax\.faces\.ViewState"><!\[CDATA\[([^\]<]+)]]></update>. See the regex demo.
I am getting a result in my jmeter test that I don't understand:
I am trying to extract the "totalRunning" value from this Json response:
{"notifications":[],"taskNotificationInfo":{"totalRunning":0,"totalCompleted":0,"totalCompletedWithErrors":0,"totalFailed":0,"totalPending":0,"requestTime":1458628767436,"hasRecords":false}}
My regex is configured as following:
Reference Name: TotalRunning
Regular Expression: "totalRunning":"(.+?)"
Template: $1$
Match: 1
Default Value: 1
screen shot:
I keep getting the default value instead of "0" in this case.
Am I extracting it from the wrong place?
Any help would be appreciated.
There is no problem with your regex totalRunning":(.+?),"totalCompleted"
only you need to select radio button Body instead of Body As a Document
refer snapshot:-
Change your regular expression as below:
Regular Expression: "totalRunning":(\d+)
In the question "totalRunning":"(.+?)" is being used as regular expression. Since values of totalRunning is not surrounded by quotes. So none was being matched and default value is being picked.
Below regex can also be used:
"totalRunning":(.+?),
Change your "Field to check" to "Body" as "Body as a document" is for binary files like Word, Excel, PDF, etc. see How to Extract Data From Files With JMeter article for more details. JSON is a usual text so it should be treated as "normal" response.
Also there is a special Post Processor - JSON Path Extractor available via JMeter Plugins project. In case of complex JSON, multiple or conditional matches, etc. it might be better and easier to use it.
The relevant JSONPath expression will be: $..totalRunning[0]
I am new to Jmeter's Regular Expression Extractor. For an HTTP Request, I am getting an HTML Response. I want to extract all the URL strings.
This is one example; the number after tools in the id part changes.
li><a id="link_sub_sub_cat_tools14874187"
href="/EN/shop/tools/tools.cat"
class="cat-/tools/tools"><span>
li><a id="link_sub_sub_cat_tools14874787"
href="/EN/shop/tools/tools.cat"
class="cat-/tools/tools"><span>
li><a id="link_sub_sub_cat_tools14874287"
href="/EN/shop/tools/tools.cat"
class="cat-/tools/tools"><span>
How can this be done?
I have created jMeter tutorials for the very subject.
http://my.kpoint.com/kapsule/gcc-e1bad3ad-61cf-4620-9733-e44a74af8a3e/t/jmeter-tutorial-regex-extractor-basics
http://my.kpoint.com/kapsule/gcc-1dadaeee-1572-4c83-81fc-8d401cade743/t/jmeter-tutorial-multivalue-regex
http://my.kpoint.com/kapsule/gcc-744b552e-c91e-4db2-9d39-37c6e66f22ac/t/jmeter-tutorial-json-array-extraction
To extract url strings use regular expression- href="(.+?)"
To extract number after after tools in the id part use regular expression- id="link_sub_sub_cat_(.+?)"