正则表达式提取器 Jmeter

Question

Hi All I am trying to extract the token from the below mentioned JSON Response (only Token value no prefix or suffix is required).

The regular ex what is used is: "token":"(.*?)"

but below is the returned value after using the reg ex.

"token":"eyJpZCI6IjgzNjg4IiwiZXhwIjoxNDYzMDQ2NDg3LCJzdWIiOiJhdXRoTmF1dGhvcjJAaGlkZ2xvYmFsLmNvbSIsImV4dGVybmFsaWQiOiJhdXRoTmF1dGhvcjJAaGlkZ2xvYmFsLmNvbSIsInJvbGVzIjpbIkhJRFN5c0FkbWluIl0sImF1ZCI6InN5c1JNMyIsImlzcyI6Imh0dHBzOlwvXC91c2Jvc3MtdHN0NHRyZXNzOjQ0M1wvYWMuNHRyZXNzLnNhbWxpZHBcL1NJU0RPTUFJTlwvYXV0aG4iLCJwcmVmZXJyZWRfdXNlcm5hbWUiOiJhdXRoTmF1dGhvcjJAaGlkZ2xvYmFsLmNvbSIsImlhdCI6MTQ2Mjk2MDA4NywiZ3JvdXBpZHMiOlsiMTAwMCJdfQasddds12"

But I don't want "token":" and the last " to be returned.

Please help me in writing the regular expression that meets my criteria.

Actual JSON Response

{  
   "statusCode":200,
   "result":{  
      "list":[  
         {  
            "provider":"openID",
            "token":"eyJpZCI6IjgzNjg4IiwiZXhwIjoxNDYzMDQ2NDg3LCJzdWIiOiJhdXRoTmF1dGhvcjJAaGlkZ2xvYmFsLmNvbSIsImV4dGVybmFsaWQiOiJhdXRoTmF1dGhvcjJAaGlkZ2xvYmFsLmNvbSIsInJvbGVzIjpbIkhJRFN5c0FkbWluIl0sImF1ZCI6InN5c1JNMyIsImlzcyI6Imh0dHBzOlwvXC91c2Jvc3MtdHN0NHRyZXNzOjQ0M1wvYWMuNHRyZXNzLnNhbWxpZHBcL1NJU0RPTUFJTlwvYXV0aG4iLCJwcmVmZXJyZWRfdXNlcm5hbWUiOiJhdXRoTmF1dGhvcjJAaGlkZ2xvYmFsLmNvbSIsImlhdCI6MTQ2Mjk2MDA4NywiZ3JvdXBpZHMiOlsiMTAwMCJdfQasddds12",
            "username":"authNauthor2@adasd.com",
            "audience":"sysRM3",
            "expires":1463046487,
            "roles":[  
               "asdasd"
            ],
            "groups":[  
               "1000"
            ]
         },
         {  
            "EMAIL":"authNauthor2@asdasd.com",
            "ENDPOINT_ID":null,
            "KEY_AUTHORIZATIONS":"IqweQWQCE-001, asdasd-002",
            "EU_COMPANY_NAME":"asdasdasd"
         }
      ]
   }
}

Answer 1

Looking into RegExp Tester mode of the View Results Tree listener:

Your regular expression is valid, so you just need to use $1$ as Template in the Regular Expression Extractor. Full configuration:

• Reference Name: anything meaningful, ie token
• Regular Expression: "token":"(.*?)"
• Template: $1$

Refer extracted value as ${token} where required.

You can check extracted variable value using Debug Sampler :

---

It might be easier to use JSON Path Extractor available via JMeter Plugins in order to deal with JSON data, it is extremely convenient when it comes to conditional selection like "extract token where email is authNauthor2@asdasd.com"

Relevant JSON Path Expression will be as simple as $..token[0] .

See:

• JSONPath - XPath for JSON for overview and syntax reference
• Advanced Usage of the JSON Path Extractor in JMeter for some scenarios covered.

Answer 2

I think you misunderstood the difference between a match and a capturing group . Let's lighten your data a bit and just consider:

"token":"eyJpZCI6IjgzN"

Your pattern : "token":"(.*)" will match the whole line while the capturing group will capture the content inside the parenthesis (here, the token value : eyJpZCI6IjgzN ).

Your need to get the value of the capturing group:

 var re = /"token":"(.*)"/; var str = '{ \\n "statusCode":200,\\n "result":{ \\n "list":[ \\n { \\n "provider":"openID",\\n "token":"eyJpZCI6IjgzNjg4IiwiZXhwIjoxNDYzMDQ2NDg3LCJzdWIiOiJhdXRoTmF1dGhvcjJAaGlkZ2xvYmFsLmNvbSIsImV4dGVybmFsaWQiOiJhdXRoTmF1dGhvcjJAaGlkZ2xvYmFsLmNvbSIsInJvbGVzIjpbIkhJRFN5c0FkbWluIl0sImF1ZCI6InN5c1JNMyIsImlzcyI6Imh0dHBzOlwvXC91c2Jvc3MtdHN0NHRyZXNzOjQ0M1wvYWMuNHRyZXNzLnNhbWxpZHBcL1NJU0RPTUFJTlwvYXV0aG4iLCJwcmVmZXJyZWRfdXNlcm5hbWUiOiJhdXRoTmF1dGhvcjJAaGlkZ2xvYmFsLmNvbSIsImlhdCI6MTQ2Mjk2MDA4NywiZ3JvdXBpZHMiOlsiMTAwMCJdfQasddds12",\\n "username":"authNauthor2@adasd.com",\\n "audience":"sysRM3",\\n "expires":1463046487,\\n "roles":[ \\n "asdasd"\\n ],\\n "groups":[ \\n "1000"\\n ]\\n },\\n { \\n "EMAIL":"authNauthor2@asdasd.com",\\n "ENDPOINT_ID":null,\\n "KEY_AUTHORIZATIONS":"IqweQWQCE-001, asdasd-002",\\n "EU_COMPANY_NAME":"asdasdasd"\\n }\\n ]\\n }\\n}'; var m; if ((m = re.exec(str)) !== null) { if (m.index === re.lastIndex) { re.lastIndex++; } document.body.innerHTML += m[1]; }

Here, m[0] holds the match while m[1] hold the capturing group value