How to make regular expression unique for multiple values

My response having same values at 2 places like

http://images.123456_120*75 http://images.123456_120*75 http://images.784217_120*75 http://images.784217_120*75

In this I need to capture 123456 & 784217 only one time.

I was using regex as http://images.(.+?)_120*75 which extracting all 4 values .But my concern is I need one value among 2 for each. Can u pls help me
thanks in advance ?

http://images.(.+?)_120*75

4 Answers
4

One way, is to have 2 post processor with the same regex. Now, in the 1st regular extractor use Match No: value as 1 and in 2nd use Match No: value as 4.

enter image description here

Hope this helps.

But if the index number of each value isn't known?
– user7294900
Aug 28 at 13:35

it is ok but we need to pass each variable once as u shown in the image. but not only 2 values are in my response there are a lot actually I want to make them unique and want to pass at once
– biyyapu
Aug 29 at 5:02

Doing it using regular expressions is quite tricky, I would recommend going for JSR223 PostProcessor and Groovy language instead.

Put the following code into "Script" area

(prev.getResponseDataAsString() =~ "http://images.(\d+)_120\*75").findAll().unique().eachWithIndex match, idx -> vars.put('image_' + idx,match.get(1))

If everything goes well you should see the following JMeter Variables generated:

image_0=123456 image_1=784217 etc.

thnku Dmitri i'll try this and let u know.
– biyyapu
Aug 30 at 6:48

it is giving regex.patternsyntaxexception: illegeal/unsupported escape sequence near index 75
– biyyapu
Aug 30 at 7:22

This should work, it captures unique values only once:

(d+)(?:_)(?![sS]*1)

Try Demo here

Explanation

(d+)(?:_)(?![sS]*1)

1st Capturing Group (d+)

(d+)

d+ matches a digit (equal to [0-9])

d+

[0-9]

Non-capturing group (?:_)

(?:_)

_ matches the character _ literally (case sensitive)

_

Negative Lookahead (?![sS]*1)

(?![sS]*1)

Assert that the Regex below does not match
Match a single character present in the list below [sS]*

[sS]*

s matches any whitespace character (equal to [rntfv ])

s

[rntfv ]

S matches any non-whitespace character (equal to [^rntfv ])

S

[^rntfv ]

1 matches the same text as most recently matched by the 1st capturing group

1

The ids to capture are dynamic
– user7294900
Aug 28 at 15:06

@user7294900 but your question reads like that. do you know their range?
– The Scientific Method
Aug 28 at 15:12

the above expression is ok but I don know the values which should come in the response and there are no only 2 values there are a lot of multiple repeted one I wan to make all unique
– biyyapu
Aug 29 at 5:00

@biyyapu you can try it now, it is capturing multiple unique values.
– The Scientific Method
Aug 29 at 5:56

@biyyapu I'm not the OP, biyyapu should say if it work
– user7294900
Aug 29 at 13:20

Perhaps you could capture the whole match in a group and capture the digits in a second group. Then use a negative lookahead to assert that what is captured in group 1 does not occur anymore giving you the unique values.

The digits you want to match are in capturing group 2. Note that to match the dot . and the asterix * literally you have to escape them.

.

*

(http://images.(d+)_120*75)(?![sS]*1)

Regex demo

Required, but never shown

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