How can I make a parameter in JMeter constantly change? - jmeter

Please help. I need the CurrentUserId parameter to change. How can I do this?enter image description here
Maybe you can make this parameter customizable? So that you can make a variable for this parameter in the Post query? I don't know...

Replace it with ${__UUID} function, it generates an UUID v4 structure each time it's being called so if you put the function into the request body it will produce an unique value for each user for each iteration:
More information on JMeter Functions concept: Apache JMeter Functions - An Introduction

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JMeter Encoding issue

I need to extract a value from http response which is in the
format "test/23|temp value"
and need to pass it in next request string body as "test%2F%7Ctemp+value"
I believe we are doing some form of encoding. how can we achieve this in JMeter ?
Appreciate if any one can help.
Take a look at __urlencode() function
${__urlencode(test/23|temp value)}
it does percent-encoding of the input and returns the result in the place where it's called in the runtime:
More information on JMeter Functions concept: Apache JMeter Functions - An Introduction

Jmeter check using if controller, for a variable has a value or not

in one of my steps in the Jmeter script, I'm using json extractor to read a value from a key(address) in the JSON response and store it in a variable called "TypeOfRequest." In the next step, I need to check if the "TypeOfRequest" value is null or not(There can be situations I don't find that key in the JSON response). Then I need to take a different route.
Snippet how I'm getting the TypeOfRequest from Json extractor $.communicationMethods[:1].hTTPS.address
So my question is, how do I check if TypeOfRequest has a value or not in the if controller?
tried using '${__javaScript(vars.get("TypeOfRequest") == null)}(ref https://www.blazemeter.com/blog/jmeter-if-controller and https://sqa.stackexchange.com/questions/32969/how-do-i-check-if-a-variable-is-null-using-a-if-controller) but unable to go through the if condition, can someone help me with this. Thanks in advance
Just use Debug Sampler to see what JMeter Variables are defined and inspect their values, my expectation is that you're "unable to go through the if condition" because your TypeOfRequest variable is not null, i.e. it's present but it's an empty string.
Also the referenced article suggests using __groovy() or __jexl3() function so I believe if you change your condition to something like:
${__groovy(org.apache.commons.lang.StringUtils.isEmpty(vars.get('TypeOfRequest')),)}
you will be able to "go through the if condition"

how to change the space value with% 20 in Jmeter

I have a problem, I'm doing a test with jmeter and I need to know how to change the value of a variable that has a space, example "pro va" with "pro% 20va" this because then this variable will be used to do a query on an endpoint example "www.google.com/search?q=pro%20va"
Use __javaScript() function to call encodeURIComponent() function:
${__javaScript(encodeURIComponent("${myVar}"),)}
Put your variable in "Path" field of the HTTP Request sampler - it will be encoded automatically
Demo:
If you have the choice - go for 2nd option as using JavaScript is some form of performance anti-pattern, if you target to use the approach for high loads - it's better to implement the encodeURIComponent() function in Groovy

How to add key with unique random value in HTTP Request defaults in Jmeter

I am trying to apply load sample request is like
http://54.174.110.64:8080/adserver/html5/inwapads/?adFormat=preappvideo&ak=O4DCX2&version=1.0&adu=5&cb=1494853894218&output=vast&priority=1&size=[vdo_adSize]&pageURL=http://qa.vdopia.com/qa/Ruchi/ssp_preroll1.html?0.7888977&domain=vdopia.com&refURL=&category=[CATEGORY]&siteName=vdopia&displayManager=Vdopia-SPP-Web&di=[COOKIE_ID]&dif=fpcm&sex=[GENDER]&age=[AGE];ipAddress=203.122.9.130;di=abcdefghijklmn
I have single request, what I want is that same request should have unique di (last key in query param). Nothing else I want to change.
My test is based on unique di in request keeping other parameters constant.
You can use Random function.
Hint:
I would suggest using __UUID() function which will generate a GUID structure which is unique according to the underlying algorithm each time being called.
If you don't like dashes you can remove them via __groovy() function like
${__groovy("${__UUID}".replaceAll("-"\, ""),)}
Demo:
See Apache JMeter Functions - An Introduction to get started with JMeter Functions.
I have used below approach :
ad di=${di_random}in path of HTTP request

Using Extracted JSON Value in Another JMeter Thread

First, let me preface this question that I've only been using JMeter for 36 hours.
I've been able to successfully create a thread that performs a POST (json body) to generate a new record.
{
"id":1257697771,
"displayName":"TERM2",
"functionName":"f_1257697771",
"displayableSourceExpression":"TRUE",
"typeId":200,
"groupId":300,
"clobObjId":1257697772,
"typeCode":5,
..........
}
I need to take the new record's ID (1257697771) value returned in order to perform updates, get by ID, delete, etc. on this record in other threads.
After much reading, I've created a Regular Expression Extractor where:
Apply to: Main Sample Only
Field to Check: Body as Document
Reference Name: newRecord
Regular Expression: "id":(.+?)\,"displayName"
Template: $1$
Match No: 1
Default Value: NONE
At this point, I'm not sure if my Regular Expression is formatted correctly where (.+?) is valid.
Also, I'm confused if I can either just specify the new reference (newRecord) in another thread's HTTP request's Parameters or use a BeanShell Post-Processor, or a Response Assertion, etc....
There a lot of answers for the same function of "Passing". Not being a programmer, I've tried to follow the discussion "how to extract json response data in jmeter using regular expression extractor?", but I'm still not clear.
Any insight is appreciated. Thanks.
JMeter Variables are local to Thread Group, you need to convert your variable to JMeter Property.
Use:
__setProperty() function in the Thread Group where you define your newRecord variable like:
${__setProperty(newRecord,${newRecord},)}
__P() function to access property value like:
${__P(newRecord,)}
See Knit One Pearl Two: How to Use Variables in Different Thread Groups article for more detailed explanation.
Also be aware of the Function Helper Dialog as it looks like JMeter functions syntax was developed by aliens.
To pass a value between threads you need to use the jmeter property function.
In a jsr223 postprocessor using groovy the code to get the value is as follows:
def userProperty = props.get('propertyToGet')
vars.put('userProperty', String.valueOf(userProperty))
You would then access the variable in your thread using:
${userProperty}
Or you can use shorthand directly:
${__P('propertyToGet')}
Variables in jmeter are thread specific.
Thanks everyone. I was able to resolve it with your help!
In the first thread:
set the Reg Expression Extractor Regular Expression = "id":(.+?)\,"displayName"
added a Bean Assertion where Parameters = ${__setProperty(newRecord,${newRecord},)}
In the second thread:
appended the Path url with ${__P(newRecord,)}
Executing the first thread (POST) resulted an new record with a unique ID. (1257698108)
Executing the 2nd thread (GET) shows
GET http://server/.../.../.../.../1257698108
And returns the exact data generated in the first thread.
Thanks everyone for your help!

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