Jmeter json路径提取器 - 如何从提取的值中删除[]

Question

From json

token_id="token_id":"82903430-f9b3-4f4b-9efa-ee1b991cb735"

I am extracting token_id using json path extractor $..token_id .

And then using the variable in next post request, but it's showing extra brackets in call

"token_id":["82903430-f9b3-4f4b-9efa-ee1b991cb735"]

Answer 1

I belive that it is caused by changes introduced in jmeter Plugins version 1.3.0 where JSONPath extractor support of returning multiple matching values was introduced .

You can work it around using one of 3 below approaches:

1. You can change your JSONPath Expression to

    $..token_id[0] 

   So you won't have to remove brackets and quotation marks manually

2. I believe you have something like:

    getToken=["82903430-f9b3-4f4b-9efa-ee1b991cb735"] getToken_1=82903430-f9b3-4f4b-9efa-ee1b991cb735 getToken_matchNr=1 

   So just using ${getToken_1} should work like a charm

3. You can use Beanshell PostProcessor to remove brackets and quotation marks. Add it after the JSONPath Extractor and put the following code into "Script" area:

    String getToken = vars.get("getToken"); getToken = getToken.replaceAll("\\\\[\\"(.*?)\\"\\\\]", "$1"); vars.put("getToken",getToken); 

Answer 2

In JSON, brackets means array of strings, numbers, booleans, objects and arrays.

"token_id" is interpreted like a string array. Example:

"token_id":["82903430-f9b3-4f4b-9efa-ee1b991cb735"]

Make sure to change "token_id" to string.

Answer 3

Use getToken_1 as suggested by Dmitri T to remove extra brackets, because in jmeter regex uses array to store the regex response.

${getToken_1} is the proper Regex to remove the [] brackets from above response.