使用正则表达式从jmeter中的HTML响应中提取值

Question

I have a problem to extract a value from an HTML response of HTTP request using jmeter.

This source html code to extract from:

<input type="text" name="ifu" size="32" value="1600553" class="champ_texte">

I'm using the following regular expression:

name of reference = ifu 
regular expression = //input[@type="text"][@name="ifu"][@ size="32"][@value="1600553"][@class="champ_texte"]

There is any problem in my expression.
NB: my html response is an response of an Action struts.

Answer 1

1. If you are using XPath Extractor to parse HTML response ensure that Use Tidy (tolerant parser) option is CHECKED.

2. Your xpath query should return value you want to extract.
   So to get eg 'value' of your 'input' you have to use query like:
   //input[@type="text"][@name="ifu"][@class="champ_texte"]/@value
   Extracted value (if any) will be stored in jmeter variable pointed in 'Reference Name' field (${ifu} in your case).

3. You can first test your xpath query using any other tool - Firefox addons at least:

   • XPath Checker
   • XPather
   • XPath Finder

Answer 2

The regular expression could be

input type=\"text\" name=\"ifu\" size=\"32\" value=\"(\\d+)\" class=\"champ_texte

In more details,

String x  ="<input type=\"text\" name=\"ifu\" size=\"32\" value=\"1600553\" class=\"champ_texte\">";
Pattern p = Pattern.compile("input type=\"text\" name=\"ifu\" size=\"32\" value=\"(\\d+)\" class=\"champ_texte");
Matcher m = p.matcher(x);
if (m.find())
   System.out.println(m.group(1));

Answer 3

If what you want to extract is the value property it is way better to use Css/Jquery Extractor:

• http://jmeter.apache.org/usermanual/component_reference.html#CSS/JQuery_Extractor

With config:

• Css/Jquery expression : input[name=ifu]

• Attrbute: value