![]() You can use XPATH extractor to extract them instead. It is very difficult to extract such values using Regular expressions. If you build a regex expression ( value=”(.+?)”>), it captures all the values of fromPort and toPort in a single array. We can extract fromPort values and toPort values into two different variables and then pass it on to the next request. To demonstrate the use of the XPath extractor, let us assume the following response for one of my HTTP requests in JMeter: XPath is used to find the location of any element on a webpage using the HTML DOM structure. It is a syntax or language for finding any element on the web page using an XML path expression. To know more about writing JSON path expressions please refer to Extract using XPath Extractor The response is in JSON format: to reuse this variable. If you click on this link or copy paste into a browser, you will see the response. To demonstrate the use of the JSON post processor, let’s use the rest service, which allows you to demo sending requests and getting responses. It will allow you to extract text content in a very easy way. It must be placed as a child of HTTP Sampler or any other sampler that has responses. This post processor is very similar to Regular expression extractor. The JSON post processor enables you extract data from responses using JSON-PATH syntax. Since JMeter 3.0, it is far easier to extract data from JSON responses using the JSON post processor extractor. An increasing number of REST APIs and servers are using JSON as their primary data exchange format. JSON is an extremely simple data format, which has overtaken XML in popularity. This is also part of JMeter Extract and re-use. This new section will explain how you can also use a JSON extractor or Xpath extractor to extract the key from the response of your first request and use the extracted key for subsequent requests. More Extractors – JMeter Extract and Re-use You can run a JMeter Load Test with your JMX script of any mobile application, web application, or API on RedLine13. For example, it is used in “Current weather by city ID” request. ![]() “cityid” variable is sent in the subsequent requests.I have added a regular expression extractor which will extract the city id and extracted value will save in “cityid” variable name. In response of this request, it returns the city id. Let’s suppose “Current weather by city” is your first request.We are using OpenWeather API for example and will extract the cityid You can use this variable in subsequent requests.Įxample Test Plan – JMeter Extract and Re-use.The extracted value will be saved in the variable given as reference name.Please refer to JMeter component reference for more details. Create your regular expression and provide values in other required fields.Right click on the first request and add post processor: Regular Expression Extractor.You can use the regular expression extractor to extract the key from the response of your first request and use the extracted key for subsequent requests. We’ve added that to the end of this blog post. Now you can use additional extractors, the JSON extractor and Xpath extractor. This post explains how to use the regular expression extractor to extract the key from the response of your first request and use the extracted key for subsequent requests. This is our most popular blog post and we’ve added more extractors.
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