I want to extract value of the parameter sent through post request in jmeter.
I know the use of regular expression for extracting response value or request URL but here I would like to extract the value of post request.
I've been thorough how to extract value from request in Jmeter but it didn't worked.
Not sure why do you need it as given you sending "something" you should already have that "something" hence you don't need to extract it, however here you go:
In order to save 1st parameter value (or the whole post data if you use "Body Data" mode):
Add Beanshell PostProcessor as a child of the HTTP Request.
Put the following code into the PostProcessor's "Script" area:
String request = ctx.getCurrentSampler().getArguments().getArgument(0).getValue();
vars.put("request", request);
You will be able to access extracted value as ${request} where required.
Clarifications:
ctx - shorthand for JMeterContext class instance
getCurrentSampler() - in case of HTTP Request sampler stands for HTTPSamplerProxy
See How to Use BeanShell: JMeter's Favorite Built-in Component guide for more information on using JMeter and Java API from Beanshell test elements in your JMeter test.
I added a Beanshell PostProcessor in my http request with following code.
import org.apache.jmeter.config.Argument;
import org.apache.jmeter.config.Arguments;
Arguments argz = ctx.getCurrentSampler().getArguments();
for (int i = 0; i < argz.getArgumentCount(); i++) {
Argument arg = argz.getArgument(i);
String a = arg.getValue();
vars.put("EMAIL",a);
}
Explanation: I get a my request as a json and put it in EMAIL. Now I can use EMAIL as a variable in my other request.
Then, I added a jp#gc Json Path Extractor and I applied it to a Jmeter Varaible.
Now, Email will be used as variable, which contains my json request and I can extract using jsonPath Extractor.
An easy way to do this is using the JSON Path Extractor.
There are just
For the example you gave
{ "data" : { "name" : "john_doe", } }
'Variable Name: YourNewVar'
'JSON Path: $.data.name'
Should work, but you may need to do some experimenting.
You may want to add a "debug sampler" (its one of the standard samplers) and put in its title $YourNewVar so you can see what is being extracted.
Beanshell and "Regular Expression Extractor" will work, of course, but may be a little harder to use if you are not familiar with them.
Related
In my case i have created one HTTP Request with all the possible parameter as below -
My .csv file is looking as below -
For some test case i need to send details in one or two parameter only, not for all. Now how can i do that in the same HTTP request without creating a new one?
Theoretically you can just send empty parameter values, just make sure that you have a blank value in the CSV file, i.e.:
param1,param2
foo,bar
baz,
,qux
Alternatively if you want to completely remove the parameters with empty values from the request you can add a JSR223 PreProcessor as a child of the HTTP Request sampler and put the following code into "Script" area:
def newData = new org.apache.jmeter.config.Arguments()
0.upto(sampler.getArguments().size() - 1, { idx ->
def arg = sampler.getArguments().getArgument(idx)
if (!arg.getValue().equals('')) {
newData.addArgument(arg)
}
})
sampler.setArguments(newData)
This way JMeter will remove the parameters which don't have their respective values from the request:
In the above example sampler stands for HTTPSamplerProxy, see the JavaDoc for all available functions decriptions
More information on Groovy scripting in JMeter: Apache Groovy - Why and How You Should Use It
I am getting Json response, I have parsed it using jp#gc - JSON Path Extractor and got an element say 'Access_Token'. This Access_Token is dynamic. So I just want to make sure that this element is not null.
Any leads would be much appreciated.
In the JSON Path Extractor provide Default Value, for example NOT_FOUND
Add Response Assertion after the JSON Path Extractor and configure it as follows:
Apply To: JMeter Variable -> Access_Token
Pattern Matching Rules:
Tick NOT
Tick Equals
Patterns to Test: NOT_FOUND (or whatever you entered into the "Default Value" input of the JSON Path Extractor)
See How to Use JMeter Assertions in Three Easy Steps article for comprehensive information on using Assertions in JMeter scripts.
Add a BeanShell PostProcessor component after you get your Access_Token and in it check what you want...
if (vars.get("Access_Token") != null) {
// do something
} else {
// do something else
}
Depending on your needs, you can do basically what ever you want from here. For example stop the thread, stop the test...
Since JMeter 3.0 there is a new JSON Path Processor that you should use instead of the JMeter Plugins one.
See its features in action here:
http://www.ubik-ingenierie.com/blog/easy-scripting-of-json-applications-with-apache-jmeter/
You can then apply Dmitri T. answer.
In jmeter 5 you could try doing something like this:
I've been trying to figure out how to configure a simple JSON Path extractor (provided on jmeter-plugins) and where to put it (inside an Http sample, outside...)
As you can see, ${expiredaccesstokenerror} is empty.
In order to fill this variable, I'm trying to extract a vallue from body response:
As you can see I'm trying to extract from json body content like:
{
"error_description":"Access token expired",
"suberror":"expired_accesstoken",
"error":"invalid_grant"
}
So, I've set JSON extractor for extracting $.suberror, however, it's always empty.
${expiredaccesstokenerror} in sampler is trying to get variable before request or response. In post processor you set the variable expiredaccesstokenerror but it's too late for displaying.
I have a GET request from where I extract the variable ${SAMLRequest} (Regular Expression Extractor).
Value of ${SAMLRequest} is as follows: VhJUVNXeHBPRjNMdnNvNHpTUT09PC9YNTA5Q2VydGlmaWNhdGU+PC9YNTA5RGF0YT48L0tleUluZm8+PC9TaWduYXR1cmU+PHNhbWxwOk5hbWVJRFBvbGljeSBBbGxvd0NyZWF0ZT0idHJ1ZSIgLz48L3NhbWxwOkF1dGhuUmVxdWVzdD4=
Next I have a POST request, and I want to post the variable ${SAMLRequest} with some changes.
Instead of the sign + I want to have %2B and instead of =, I want to have %3D.
Do you know how I can change a variable in JMeter?
Use beanshell preprocessor1 in your post sampler
The easiest way is to check "Encode?" box for SAMLRequest parameter in your POST request body
The harder way is using __urlencode() JMeter Function.
The hardest way is BeanShell Pre Processor as okwap suggests. However it'll give you the full control.
Relevant Beahshell code will look like:
import java.net.URLEncoder;
String source = vars.get("SAMLRequest");
String encoded = URLEncoder.encode(source);
vars.put("SAMLRequest", encoded);
I have created a User Defined Variable with name as "Status" and a default value as "Started".
I got a HTML Response, with following content:
<SPAN id="ApplicationStatus"> Interrupted</SPAN>
I want to get the Span Id value and use in beanshell samplers to process further either in If Controller or Switch Controller.
I used Regular Expression extractor to extract the value needed and its working too.
But when i say vars.get("Status") will always return me the default value "Started".
Is there a way where i can extract the required value "Interrupted" and substitute that to the user defined variable "Status"?
Yes you can get that value of #ApplicationStatus into your User Defined Variable (UDV).
You can use regex but really you shouldn't for this type of parsing I'm not going to get into many reasons why.
Here is how you can do it using alternative (better solution IMHO) :
String html = "<SPAN id=\"ApplicationStatus\"> Interrupted</SPAN>";
Document doc = Jsoup.parse(html);
String value = doc.select("#ApplicationStatus").first().text();
//Put value in UDV Status
vars.put("Status", value);
You can add this to your sampler that does this kind of parsing i.e Beanshell sampler, here are the imports (which go above this code) :
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
Please note that this code is Jsoup dependent so you will need to download jsoup jar and put it in your $JMETER_HOME/lib directory.
Hope this sheds some light on your issue.
Update
If you want to avoid Java, I've written small jmeter post processor component that extracts text value from HTML element. Take a look at :
https://github.com/c0mrade/Html-Extractor
If you go over the steps how to install the post processor from the page above, you would use it as follows :
Right click on your sampler. Add a Post Processors -> Html Extractor , in the jquery selector field write #ApplicationStatus and store result in variable of your choice (Status). Following this add Debug Sampler, if in your Debug sampler there is variable Status with the value Html Extractor is working! you're done!
I can't reproduce your issue.
Here is my plan:
- User defined variables with variable Status
- Thread Group
- HTTP Request
- Regular expression extractor with reference name = Status
- Beanshell Sampler that logs Status variable
Beanshell sampler logs value that was received in Regular Expression Extractor