问题
I would like to know why regular expression extractor in JMeter is not extracting the data after parameterization. Response message: Internal Server Error
Expression added are:
name="__EVENTVALIDATION" id="__EVENTVALIDATION" value="(.+?)"
name="__VIEWSTATE" id="__VIEWSTATE" value="(.+?)"
POST data:
__VIEWSTATE=%24%7BviewState%7D&__EVENTVALIDATION=%24%7BeventValidation%7D&txtUserID=1001201&txtPWD=CFL&BtnSubmit=Submit&hdnE=5&hdnN=323&hdnD=173回答1:
Your regexp is probably wrong.
To debug it, run your test then use View Results Tree and select Regexp Tester:
You can then test your regexps and see what happens.
As I don't have the response content that contains the 2 tokens, I can only guess that regexp should be :
name="__EVENTVALIDATION" id="__EVENTVALIDATION" value="([^"]+?)" , see https://regex101.com/r/aG1gX2/1
name="__VIEWSTATE" id="__VIEWSTATE" value="([^"]+?)" , see https://regex101.com/r/iM5cZ3/1
来源：https://stackoverflow.com/questions/32797774/jmeter-how-to-know-why-my-regular-expression-extractor-in-jmeter-is-not-extract