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    copied!<p>It may be worth to use <a href="http://jmeter.apache.org/usermanual/best-practices.html#bsh_scripting" rel="nofollow noreferrer">BeanShell scripting</a> to process JSON response.</p> <p>So if you need to get ALL the "name/description" pairs from response (for each section) you can do the following:<br> 1. extract all the "name/description" pairs from response in loop;<br> 2. save extracted pairs in csv-file in handy format;<br> 3. read saved pairs from csv-file later in code - using <a href="http://jmeter.apache.org/usermanual/component_reference.html#CSV_Data_Set_Config" rel="nofollow noreferrer">CSV Data Set Config</a> in loop, e.g.<br></p> <p>JSON response processing can be implemented using BeanShell scripting (~ java) + any json-processing library (e.g. <a href="http://repo1.maven.org/maven2/com/metaparadigm/json-rpc/1.0/json-rpc-1.0.jar" rel="nofollow noreferrer">json-rpc-1.0</a>):<br> - either in <a href="http://jmeter.apache.org/usermanual/component_reference.html#BeanShell_Sampler" rel="nofollow noreferrer">BeanShell Sampler</a> or in <a href="http://jmeter.apache.org/usermanual/component_reference.html#BeanShell_PostProcessor" rel="nofollow noreferrer">BeanShell PostProcessor</a>;<br> - all the required beanshell libs are currently provided in default jmeter delivery;<br> - to use json-processing library place jar into JMETER_HOME/lib folder. <br><br></p> <p>Schematically it will look like:</p> <ol> <li><p>in case of BeanShell PostProcessor:</p> <pre> Thread Group . . . <b>YOUR HTTP Request</b> BeanShell PostProcessor // added as child . . . </pre></li> <li><p>in case of BeanShell Sampler:</p> <pre> Thread Group . . . <b>YOUR HTTP Request</b> BeanShell Sampler // added separate sampler - after your . . . </pre></li> </ol> <p>In this case there is no difference which one use.</p> <p><img src="https://i.stack.imgur.com/ThHF6.png" alt="bsh-sampler_extract-json-data"></p> <p>You can either put the code itself into the sampler body ("Script" field) or store in external file, as shown below. <br><br></p> <p>Sampler code:</p> <pre><code>import java.io.*; import java.util.*; import org.json.*; import org.apache.jmeter.samplers.SampleResult; ArrayList nodeRefs = new ArrayList(); ArrayList fileNames = new ArrayList(); String extractedList = "extracted.csv"; StringBuilder contents = new StringBuilder(); try { if (ctx.getPreviousResult().getResponseDataAsString().equals("")) { Failure = true; FailureMessage = "ERROR: Response is EMPTY."; throw new Exception("ERROR: Response is EMPTY."); } else { if ((ResponseCode != null) &amp;&amp; (ResponseCode.equals("200") == true)) { SampleResult result = ctx.getPreviousResult(); JSONObject response = new JSONObject(result.getResponseDataAsString()); FileOutputStream fos = new FileOutputStream(System.getProperty("user.dir") + File.separator + extractedList); if (response.has("items")) { JSONArray items = response.getJSONArray("items"); if (items.length() != 0) { for (int i = 0; i &lt; items.length(); i++) { String name = items.getJSONObject(i).getString("name"); String description = items.getJSONObject(i).getString("description"); int list_id = items.getJSONObject(i).getInt("list_id"); if (i != 0) { contents.append("\n"); } contents.append(name).append(",").append(description).append(",").append(list_id); System.out.println("\t " + name + "\t\t" + description + "\t\t" + list_id); } } } byte [] buffer = contents.toString().getBytes(); fos.write(buffer); fos.close(); } else { Failure = true; FailureMessage = "Failed to extract from JSON response."; } } } catch (Exception ex) { IsSuccess = false; log.error(ex.getMessage()); System.err.println(ex.getMessage()); } catch (Throwable thex) { System.err.println(thex.getMessage()); } </code></pre> <p>As well a set of links on this:</p> <ul> <li><a href="http://theworkaholic.blogspot.com/2012/05/json-in-jmeter.html" rel="nofollow noreferrer">JSON in JMeter</a></li> <li><a href="http://www.havecomputerwillcode.com/blog/?p=500" rel="nofollow noreferrer">Processing JSON Responses with JMeter and the BSF Post Processor</a></li> </ul> <hr> <p><strong>Upd. on 08.2017:</strong></p> <p>At the moment JMeter has set of built-in components (merged from 3rd party projects) to handle JSON without scripting:</p> <ul> <li><a href="https://jmeter-plugins.org/wiki/JSONPathExtractor/" rel="nofollow noreferrer">JSON Path Extractor</a> (contributed from <a href="https://github.com/ATLANTBH/jmeter-components/" rel="nofollow noreferrer">ATLANTBH jmeter-components</a> project);</li> <li><a href="http://jmeter.apache.org/usermanual/component_reference.html#JSON_Extractor" rel="nofollow noreferrer">JSON Extractor</a> (contributed from <a href="https://ubikloadpack.com/" rel="nofollow noreferrer">UBIK Load Pack</a> since JMeter 3.0) - see answer below.</li> </ul>
 

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