JMeter:正则表达式提取器未提取令牌 [英] JMeter: Regex Extractor not Pulling Token
问题描述
我需要从网页中提取CSRF令牌，然后通过BeanShell进行记录.由于我在
I need to extract a CSRF token from a webpage, then log it via BeanShell. The latter part is working thanks to the help I received in this thread, but now I need to figure out how to get ${token} to populate with the right data.
注意:我知道正则表达式提取器不是首选方法，但是在这种情况下，我必须保持练习的参数范围之内.
Note: I know the Regular Expression Extractor is not the preferred method, but I have to stay within the parameter of the exercise, in this case.
首先，我设置了一个HTTP请求以针对www.blazedemo.com/register执行GET.
First, I have a HTTP Request set to perform a GET against www.blazedemo.com/register.
第二，我检查了响应树中显示的响应数据以找到CSRF令牌:
Second, I checked the response data shown in the response tree to find the CSRF token:
<!-- CSRF Token -->
<meta name="csrf-token" content="4ZCKKqQgwJH5lT5dQSeAwgeyOr7plAe7IOVRGmQm">
我有一个Regex Extractor设置来抓取它:
I have a Regex Extractor setup to grab it:
万一失败了，我默认设置为"NOT_FOUND".
In case it fails to do so, I have default set as "NOT_FOUND".
最后，我有一个后处理器记录给$ {token}的任何值.
Finally, I have a post processor logging whatever value is given to ${token}.
我在日志中找到以下内容:
I find the following in my log:
2017-10-31 15:12:31,975 INFO o.a.j.u.BeanShellTestElement:令牌 是:NOT_FOUND
2017-10-31 15:12:31,975 INFO o.a.j.u.BeanShellTestElement: The token is: NOT_FOUND
推荐答案
请记住，不建议使用正则表达式来解析HTML ，我建议您使用 CSS/JQuery提取器代替.
Remember that it is not recommended to use regular expressions for parsing HTML, I would recommend going for CSS/JQuery Extractor instead.
- 将具有此CSRF令牌的CSS/JQuery Extractor添加为请求的子项
-
配置如下:
- Add CSS/JQuery Extractor as a child of the request which has this CSRF token
Configure it as follows:
- 参考名称:任何有意义的内容，即
token - CSS/JQuery表达式:
meta[name=csrf-token] -
属性:
content
- Reference Name: anything meaningful, i.e.
token - CSS/JQuery Expression:
meta[name=csrf-token] Attribute:
content
演示:
更多信息:如何在JMeter中使用CSS/JQuery提取器
如果您仍然想使用正则表达式-将要检查的字段"更改为Body，但是我不建议您这样做，因为在解析HTML响应时正则表达式的开发和/或支持非常麻烦.对任何标记更改非常敏感，即，如果属性顺序更改或属性转到新行，则将破坏您的测试.
If you still want to go for Regular Expressions - change "Field to check" to Body, however I wouldn't recommend this as when it comes to parsing HTML responses regular expressions are headache to develop and/or support and very sensitive to any markup change, i.e. if order of attributes changes or an attribute goes to a new line it will ruin your test.
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