In JMeter, using a post processor Regular Expression Extractor, i want to extract the form's action attribute. What regular expression should i use?
You should not be using regular expression to parse HTML, go for XPath Extractor instead and use query like
//form/#action
See XPath Tutorial and Using the XPath Extractor in JMeter for more details.
I could not get the XPath Extractor to work; from reading the JMeter log, it looks like the XPath Extractor will not work if the html being parsed is not well-formed xml.
But, I was able to extract the form action using a CSS Selector Extractor with the following values:
CSS Selector expression: form
Attribute: action
Match No. (0 for Random): 1
Related
We have html response in which need to extract content/text from paragraph html tag and store to compare with xml text like below. In this text, there is tag in between of the content/text which should be ignored hence trying to achieve this using Regular Expression.
xml content:
<p>testing content<italic>text</italic>testing content</p>
html content:
<p>testing content<i>text</i>testing content</p>
For this used:
Reg Exp in Jmeter:
<p>(.*)</p)
This will fetch entire text and when tried to match with beanshell assertion, it fails since tag is showing as in html response.
If tried as:
<p>(.*)<i
Then also the same issue.
How to ignore/eliminate italic tag using Regular expression of Jmeter, or any other way to achieve the same in Jmeter.
You should not be using Regular Expressions in order to extract data from HTML/XML responses
JMeter provides XPath Extractor which is way more handy for extracting data from XML/HTML responses.
The relevant XPath query would be as simple as //p/text()
Using Beanshell is not recommended way of scripting, if you need advanced comparison logic consider JSR223 Assertion instead. If you just need to compare 2 variables normal Response Assertion will be more than enough.
<input
name="formToken" type="hidden"
value="19225544fb878c9a8c77dafdfe616454a13e3c96"
/>
above is the line having lot of space in between. i want to extract value using regular expression in Jmeter. so please help me for regular expression to extract.
Try doing a find on this regex:
value="([^"]+)"
And then access the following in the template:
$1$
See the demo link below for an example of this working.
Demo
Be informed that using Regular Expression Extractor for parsing HTML is not the best idea, I would recommend going for CSS Selector Extractor instead, the relevant configuration would be as simple as:
Selector: input[name=formToken]
Attribute: value
Demo:
More information: How to Use the CSS/JQuery Extractor in JMeter
Try with the following Regex:
value="(.+?)"
I want to use jmeters regular expression extractor to catch a link from an HTTP response I have. How do I catch only whats inside the ? I want the TEXT.
<a([^>]+)>(.+?)<\/a>
The expression above gives me the whole link with the a tag and href.
I would rather recommend not using regular expressions for getting data from HTML as href attribute may be located in differently, at new line, etc. See the epic comment on SO for detailed explanation.
JMeter provides 2 test elements which can be used to extract href attribute from HTML page links:
XPath Extractor
CSS/JQuery Extractor
XPath Example
Add XPath Extractor as a child of the request (just like Regular Expression Extractor)
Configure it as follows:
If your response is not XHTML compliant - check Use Tidy box
Reference name - anything meaningful, i.e. href
XPath query - //a/#href
You can refer to extracted link URL as ${href} anywhere in current thread group.
In case of multiple matches URLs can be accessed as ${href_1} ${href_2} etc.
For more information on the XPath Extractor see Using the XPath Extractor in JMeter guide
CSS/JQuery Example
Add CSS/JQuery Extractor as a child of the request
Configure it as follows:
Reference name - any variable name, i.e. href
CSS/JQuery expression - a
Attribute - href
Match no:
default is blank - will return the first link
any number > 0 - will return match number
0 - will return random link URL
-1 - will return all link URLs and store them as ${href_1} ${href_2} etc.
For CSS/JQuery expressions building information refer to JSOUP selector syntax guide
Try with this:
<a[^>]* href="([^"]*)"
regular expression for finding 'href' value of a <a> link
Try this.
use group 1 to get the content from tag.
<a(?: [^>]+)?>((?:(?!<\/?a[ >]).)*)<\/a>
SEE DEMO: http://regex101.com/r/rV3eH6/1
Using Jmeter I was trying to extract the value of a token from the following, using the regular expression extractor:
<input name="__RequestVerificationToken" type="hidden"
value="BeRYiSIRjZoQHq4VW8qbkgXlnnzdUINpFNoYF_ugx-FRk0tkImbQPhwyYjyz_0Q-w6F2A0gDOfMZrdklD6rVn6-QnYggfImb55f90V7nrD_kbSkT3-y3gPqoTFg0ynTBLyX5Lw2" />
When I used the following expression:
name="__RequestVerificationToken" type="hidden" value="(.+?)"
the value was not extracted.
After a few searches I used the following expression:
name="__RequestVerificationToken" type="hidden" value="([A-Za-z0-9-_]+?)"
which worked, but I don't know why :d.
My question: why the first expression didn't worked since basically tells to extract any character that matches one or more times.
use this
name="__RequestVerificationToken" type="hidden"\s*value="(.+?)"
or the best is
name="__RequestVerificationToken" type="hidden"\s*value="([^"]*)"
Both of yours will not work as between type and value there is a \n which you have not taken care of.Now it works.See demo.
http://regex101.com/r/dK1xR4/14
First of all, don't use Regular Expressions to extract data from HTML. It is complicated and very fragile in case of even slight DOM changes.
JMeter provides the following components to extract data from HTML responses:
XPath Extractor
CSS/JQuery Extractor
XPath Extractor Guide
Add Xpath Extractor as a child of the request which produces that response
Configure it as follows:
Reference name: anything meaningful, i.e. token
XPath query: //input[#name='__RequestVerificationToken']/#value
If your response is not valid XHTML check Use Tidy box
Refer to extracted value as ${token} or ${__V(token)} where required. Remember that JMeter Variables scope is limited to current thread group only.
For more information see Using the XPath Extractor in JMeter
CSS/JQuery Extractor Guide
Add CSS/JQuery Extractor as a child of the request which produces that authentication token response
Configure it as follows:
Reference name: anything meaningful, i.e. token
CSS/JQuery expression: input[name=__RequestVerificationToken]
Attribute: value
Refer to extracted value as ${token} or ${__V(token)} where required. Same restriction on JMeter Variables scope apply.
See JSoup selector syntax guide for a reference on how to build CSS selectors.
Hope this helps.
This is my html
<input name="__RequestVerificationToken" type="hidden" value="A9y6Ndf7Q2XP2Yz6zhaVChoIvpQGUrZRTvu9D_HnHnUcFBVInerxCjU4vpOXQYVhFwnzl-zAzkvtto7BLAVVr">
I want to extract value in jmeter Regular Expression Extractor.
This is my regx window but when i post it i will not get expected token it is something like this __RequestVerificationToken=%24%7Bauth_token%7D.
Try using $1$ as a Template, it should resolve your issue.
Looking into your request I can see that you're sending %24%7Bauth_token%7D which being decoded looks like ${auth_token} so you use case is not correct.
You need 2 requests:
GET request to get the page and extract RequestVerificationToken and store it to auth_token variable.
POST Request which will use auth_token variable.
See Using Regular Expressions in JMeter guide for more details.
By the way, you can use combination of Debug Sampler and View Results Tree listener to see if there are any matches. It should be more convenient w.r.t. groups and variables.
In general, it isn't recommended to use Regular Expressions to parse HTML. I would suggest to use XPath Extractor instead. Relevant XPath expression will look like:
//input[#name='__RequestVerificationToken']/#value
Few things to notice:
If you page isn't XHTML compliant you'll need to check Use Tidy box in XPath Extractor
JMeter 2.11 provides nice XPath Tester right in View Results Tree Listener
We need to set the following Regular Expression Extractor values to extract the auth token values
Reference Name : Auth_Token
Regular Expression : <input\sname="__RequestVerificationToken"\stype="hidden"\svalue="(.+)">
Template : $1$
Match No : 1
Default values : NOT FOUND TOKENS