#Html regex data extractor how to
#Html regex data extractor code

#Html regex data extractor code

Body (unescaped): The search includes all the HTML escaped code like &, ", < etc.The header of the response does not include in the search scope. Body: This option instructs JMeter to search in the body of the response.Field to check : It refines the search scope and instructs JMeter to search the dynamic value in the specific part of a sample, sub-sample or JMeter variable depends on the option you selected in “Apply to” section.JMeter Variable Name to use: If the dynamic value needs to be extracted from the value of any JMeter variable then you need to select this option and provide the JMeter Variable name in the text field.Sub-samples only: When the request is re-directed and dynamic value is available in the response of re-directed request then you can use this search scope.Main sample only: When the request is not re-directed or dynamic value is present only in the response of the main request then use this search scope.Main sample and sub-samples: In case, the request is redirected then use this search scope, so that dynamic content can be searched in the response of both main and re-directed request.Apply to : To define the search scope of dynamic value.Comments : To provide arbitrary comments (if any).Name : To provide the name of the post-processor.‘Regular Expression Extractor’ has the following input fields: What are the input fields of ‘Regular Expression Extractor’? Select the ‘Sampler’ element whose response contains the dynamic value and you want to capture it.

#Html regex data extractor how to

How to add ‘Regular Expression Extractor’? Regular Expression Extractor is a post processor (execute after the response arrives) and it is always added under a sampler whose response contains dynamic value(s) and you need to capture and pass that dynamic value(s) in the next request (where required). Now, come back to the regular expression extractor element of JMeter. Learn – How to write a regular expression? If you want to learn how to write regular expression then refer to my post where you can learn regular expression token in a simple way along with examples. Here, I will not discuss too much about regular expression syntax (token), otherwise, it will be distracted us from our original topic. To prepare a regular expression, it is important to learn how we can create it using metacharacter and literal character. In Microfocus Performance Center/LoadRunner, dynamic values are captured by Correlation. Regular Expression is a pattern which is used to specify a set of strings required for getting dynamic value. Regular Expression is used to identify dynamic values come in a response. In JMeter, Regular Expression plays an important role. Keep in mind your ultimate goal must be to find out all the dynamic values which cause the failure of the script and correlate them. There could be more values which depend on the type of the application and the term used to denote them. Now, the second thing that you should know is: What are the common values which require correlation? I am using rubular.Hope you understood, why correlation is so important in VuGen scripting. Step 4 : Now use any REGEX editor tool to write and test your REGEX pattern. Step 3 : Go to the example page (or the page you want to extract) and open the HTML source code in a editor or using “View source” option in browser

Step 2 : Edit the agent in agent editor and go to the Collection > Fields section. Step 1 : Create a new web scraping agent using chrome extension or use an example agent from samples. In this example, I am going to use this example page : Let’s see how we can parsing HTML using Regular Expressions. Note : Agenty chrome extension can’t be used to set up RegEx match fields, so we need to create a dummy agent or use one from samples agent and then edit that agent in agent editor to add RegEx match fields. In this example, I’ll show you how to extract HTML table fields using Regular Expressions to learn how the RegEx option can be used to extract anything you want from the page content. While it’s recommended to use CSS selectors when possible, we can’t deny the fact that sometimes Regular Expression(RegEx) is required to extract some content which is not part of HTML but needs to be parsed to get an agent result.įor example, some JavaScript variable values are inside a script tag. There are multiple extract options available in Agenty to extract data from websites and one of them is RegEx.