I'm just getting started with JMeter and have run into a problem. I'm using the Regular Expression Extractor to scrape and parameterize a string that I named CouponID, as follows:
"coupon_id":”(.+?)” (from the following json response "coupon_id":"320747")
But when I plug the variable (${CouponID}) in the value field of a parameter in the subsequent http request, its request URL ends up looking like this and the test fails:
http://[...]/coupon.json?id=${CouponID} (instead of [...]/coupon.json?id=320747)
When I include a valid default value, the URL is constructed correctly and the test passes.
Please advise.
Try using this instead.
(?<=\"coupon_id":")(.*?)(?=\")
Preview:
http://imgur.com/6F5Lk0X
Related
So I am currently working on a web application that takes as input the location of a malware file for one of the functions.
This is passed via the views file. However after some altering of the models section of the application I found it was unable to parse the full filepath.
The code below works for the following pcap as input:
8cdddcd3-35fa-468d-8647-816518a9836a435be1c6e904836ad65f97f3eac4cbe19ee7ba0da48178fc7f00206270469165.pcap
url(r'^analyse/(?P<pcap>[\w\-]+\.pcap)$', views.analyse, name='analyse'),
However this code no longer works when it is a pcap containing the full filepath.
/home/freddie/malwarepcaps/8cdddcd3-35fa-468d-8647-816518a9836a435be1c6e904836ad65f97f3eac4cbe19ee7ba0da48178fc7f00206270469165.pcap
Any suggestions or pointers on how exactly I would alter the regular expression to accomodate the full filepath in the string being passed to the route would be very much appreciated.
regex: ((/\w+?)+/)?([\w-]+\.pcap)
django regex: ^analyse(?P<pcap>((/\w+?)+/)?([\w-]+\.pcap))$
note that there is no slash after analyse because it's part of pcap now.
so analyse/home/freddie/malwarepcaps/foo-bar.pcap should match this pattern and pcap will be equal to /home/freddie/malwarepcaps/foo-bar.pcap
test:
https://pythex.org/?regex=((%2F%5Cw%2B%3F)%2B%2F)%3F(%5B%5Cw-%5D%2B%5C.pcap)&test_string=8cdddcd3-35fa-468d-8647-816518a9836a435be1c6e904836ad65f97f3eac4cbe19ee7ba0da48178fc7f00206270469165.pcap%20%0A%2Fhome%2Ffreddie%2Fmalwarepcaps%2F8cdddcd3-35fa-468d-8647-816518a9836a435be1c6e904836ad65f97f3eac4cbe19ee7ba0da48178fc7f00206270469165.pcap&ignorecase=0&multiline=0&dotall=0&verbose=0
PS: I think it's better to move such parameter (path - /home/f/m/f.pcap) into querystring (for GET request) or into http-body (for POST request)
so it will be easier to obtain param without url-matching
I'm trying to add a JMeter backend listener to my JMeter project so I can have all the metrics in real-time in Graphite. My tests run distributed on several nodes and I want to know the hostname in as part of the graphite path. I tried to incorporate JSR223 scripts, but those are not evaluated before the listeners start, so I used the __groovy() method for the rootMetricsPrefix field, like this:
${__groovy(vars.get(vars.get("environment")+".graphiteprefix"))}.server.
${__groovy(InetAddress.getLocalHost().getHostName()
.replaceAll(/^([^.]*).*$/){m,host->return host})}.
myappbucket.jmeter.
The first part gets the variable with the name "environment" to get the root prefix for the environment ("test", "load", etc). The seconds __groovy() script should get the first part of the hostname. It works if I add it as a JSR223 sampler (to test it), but if I try to use it as a variable, I get the following error:
Script13.groovy: 1: expecting '}', found '' # line 1, column 67.
me().replaceAll(/^(^\.).*$/){m
^
1 error
at org.codehaus.groovy.jsr223.GroovyScriptEngineImpl.eval(GroovyScriptEngineImpl.java:158) ~[groovy-all-2.4.13.jar:2.4.13]
at javax.script.AbstractScriptEngine.eval(AbstractScriptEngine.java:233) ~[?:1.8.0_152]
at org.apache.jmeter.functions.Groovy.execute(Groovy.java:121) [ApacheJMeter_functions.jar:4.0 r1823414]
at org.apache.jmeter.engine.util.CompoundVariable.execute(CompoundVariable.java:137) [ApacheJMeter_core.jar:4.0 r1823414]
According to JMeter documentation:
If a function parameter contains a comma, then be sure to escape this with "\", otherwise JMeter will treat it as a parameter delimiter. For example:
${__time(EEE\, d MMM yyyy)}
So you need to escape the comma between m and host
${__groovy(InetAddress.getLocalHost().getHostName() .replaceAll(/^(^\.).*$/){m\,host->return host})}. myappbucket.jmeter.
Also be aware of __machineName() and __machineIP() functions, they provide a little bit easier way of getting the hostname and IP address of the JMeter Engine. See Apache JMeter Functions - An Introduction article for more comprehensive information on JMeter Functions
When request extracts a URL variable from XML document through XPath Extractor and Regular Expression Extractor it decodes the encoded characters in the extracted URL.
For example, the URL in the XML file:
<url>www.testing.com/test/request?parameter1=test1¶meter2=test2</url>
The & between the two URL parameters become & which affect my testing final results.
Is there any way to prevent special characters decoding in JMeter?
Normally JMeter should not perform encoding and decoding of variables during extraction, the variable should be sent as is so most probably something is wrong with your test logic. You can double check the variable value using Debug Sampler and View Results Tree listener combination. See How to Debug your Apache JMeter Script article for more information on JMeter tests troubleshooting.
As a workaround you can explicitly tell JMeter to encode the variable using __escapeHtml() function like:
${__escapeHtml(${your_variable_here})}
I am analyzing a website that returns text (JSON array), which I'm using HTTP Request element for. What I'm trying to do is check the number of times a string appears in the response, for example a field called "itemname". So I have added a Regular Expression Extractor, put ItemNameVar as the Reference Name, ^itemname$ as the Regular Expression, $1$ for the Template, -1 for Match No, and "NOT FOUND" for Default Value. I've also added an If Controller, which says "${ItemNameVar_matchNr}" == "1", because I expect it to occur only one time. However, it never fails if I set it to a different number. What am I doing wrong here? Thank you.
It looks like to be an issue with your regular expression.
I would suggest using Beanshell Post Processor instead of Regular Expression Extractor as JSON structures aren't very handy to parse with regexes.
Reference Beanshell code will look as follows:
import org.apache.commons.lang3.StringUtils;
int matches = StringUtils.countMatches(new String(data), "itemname");
vars.put("ItemNameVar_matchNr", String.valueOf(matches));
Explanation:
First line - import necessary helper class
Second line - data is a short-hand for byte-array representation of Sampler response. Method countMatches counts number of occurrences of itemname criteria in string representation of response data. Result is saved as matches integer variable
Third line - value of matches is saved as JMeter Variable called ItemNameVar_matchNr
See How to use BeanShell: JMeter's favorite built-in component guide for more detailed explanation of Beanshell scripting in JMeter and small Beanshell cookbook containing JMeter API usage examples.
The approach you are following is absolutely correct.
Please check your Jmeter script. Make sure the next request you are trying to execute after
IF Controller is branch or within Controller
Jmeter IF Controller
Hope this will help.
I'm using JMeter 2.7 to load test a web application. I have a HTTP Request Sampler that returns a JSON document that has two values I want to extract from it. To do that, I have two RegEx PostProcessors assigned to the Sampler with the following configuration:
Regular Expression Extractor
Apply to: Main Sample Only
Response Field to Check: Body
Reference Name: val_1
Regular Expression: "val_1": "(\S+)"
Template: $1$
Match No.: 1
The configuration for the second is the same, just substituting val_2 for val_1. These seem like they should work.
Now, I also have a JSR223 PreProcessor script on a subsequent HTTP request that I want to use to transform the values I'm grabbing with the regex. However, the output of vars.get('val_1') and vars.get('val_2') are both null values. Tinkering with user-defined variables and "Apply to" settings haven't yielded any useful results.
Can anyone explain what I'm doing incorrectly? How can I use data retrieved through a RegEx extractor in my JSR223 script? Thanks in advance.
Edit - 9/26/2012
It was requested that I explain the structure a bit more, so here's an outline.
Thread Group
Once Only Controller
HTTP Sampler
Regular Expression Extractor (for val_1)
Regular Expression Extractor (for val_2)
Some Additional Simple Controllers with HTTP Samplers Here
Throughput Controller (80%)
HTTP Sampler
JSR223 PreProcessor (This is the PreProcessor in question)
Regular Expression Extractor (to grab an unrelated value from the response)
Some Additional Controllers with HTTP Samplers Here
Hopefully this is more helpful.
Is your regexp "val_1": "(\S+)"?
can you add a debug sampler just after Http sampler to check that the 2 vars are defined.
To do that add a tree result listener and see what debug sampler shows.