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How to change / add to Cookie in JMeter?

I am very new to JMeter and need your help on how to change the cookie.

Here's the scenario: I am testing an evaluation / testing website that offers multiple answers to questions. When the user makes their choice and removes the submit button, the JavaScript on the page adds its responses (for example, "Responses = BBAACDA ...") to the cookie and makes the next GET request (instead of a POST request!).

Since JMeter does not execute JavaScript (as mentioned in his tutorial, it is not a browser), it cannot add responses to the cookie. As a result, my test plan is unable to recognize user interaction.

How do I add / add / change a dynamic cookie? Thanks in advance!

- Ishti

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Use a Beanshell or better Jsr223 Pre-Processor with groovy and use the code here:



code:

import org.apache.jmeter.protocol.http.control.CookieManager;  
import org.apache.jmeter.protocol.http.control.Cookie;
CookieManager manager = sampler.getCookieManager();
Cookie cookie = new Cookie("<NAME>","<VALUE>","<HOST>","/",false,0);
manager.add(cookie);
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I had to make some changes to the code that worked for me:

import org.apache.jmeter.protocol.http.control.CookieManager;  
import org.apache.jmeter.protocol.http.control.Cookie;

CookieManager manager = ctx.getCurrentSampler().getCookieManager();
Cookie cookie = new Cookie("<NAME>","<VALUE>","<DOMAIN>","<PATH>",false,0, true, true, 0);
manager.add(cookie);


Following the definition at http://jmeter.apache.org/api/org/apache/jmeter/protocol/http/control/Cookie.html

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You can change or add a cookie file manually in pre-processor script groovy as well as fooobar.com/questions/2155469 / ... .

Here's how to find and edit a cookie by looking at all cookies in the cookie manager:

import org.apache.jmeter.protocol.http.control.CookieManager;  
import org.apache.jmeter.protocol.http.control.Cookie;

log.info("#########################################################################");
// cookie manager
CookieManager manager = ctx.getCurrentSampler().getCookieManager();

def NbOfCookies = manager.getCookieCount();

for (def i = 0; i < NbOfCookies; i++) {
    log.info("Cookie n° " + (i+1) + ": " + manager.get(i).getName() + ": " + manager.get(i).getValue());
    if (manager.get(i).getName() == "Cookie_name_to_find") {
        log.info("MAJ of Cookie_name_to_find");
        manager.get(i).setValue("New_cookie_value");
        log.info("-> " + manager.get(i).getName() + ": " + manager.get(i).getValue());
    }
}

log.info("#########################################################################");

Here is a list of cookie manager methods like add or remove ...: http://jmeter.apache.org/api/org/apache/jmeter/protocol/http/control/CookieManager.html .

Here is a list of cookie methods to change additional properties like domain, expiration date ...: http://jmeter.apache.org/api/org/apache/jmeter/protocol/http/control/Cookie .html

It should be known that according to the standard chosen in the cookie manager, manually changed values ​​can be changed by the manager before being requested, so you must be careful.

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