How to extract single Header value from multiple values extracted using regular expression extractor in JMeter?

Question

I need to extract this highlighted value as authorization token:

Response headers:
HTTP/1.1 200 OK
Server: GlassFish Server Open Source Edition  4.1 
X-Powered-By: Servlet/3.1 JSP/2.3 (GlassFish Server Open Source Edition  4.1  Java/Oracle Corporation/1.8)
Access-Control-Allow-Origin: *
Access-Control-Allow-Methods: GET, POST, DELETE, PUT, OPTIONS
Access-Control-Allow-Headers: Content-Type, Authorization
Access-Control-Expose-Headers: Authorization
Authorization: **eyJhbGciOiJkaXIiLCJlbmMiOiJBMTI4Q0JDLUhTMjU2IiwiY3R5IjoiSldUIn0..ghNqO8N_J_y6FrxTPf03Aw.UwbOxNenbLL8qxoD89AY0Z89190AbiJh6xVlF20RLA3XN5orf3qX9AXoNNSf_qzj3dcu2G5RVdW9DZ2ERez0HEvMkYj871nvDoca4-V1WaeAOkSI3b72UbMoWA4RLnIfAHY64ELJJowXNAS5m0K8MePzHXtAbsQYR0F_jPlPwKIUozOhA4idbMy_YjmmYq6s4PEzM-FURJJVmvO9H7OneXwR01e2S5TVb8AUOVkEk_BeRz5oUsQEl3orb-5it-lmd6upDR_DZqsVJxdlrtH57QexhNZPhLuISCk3YeN_pfXqE7RCv6UrUibSYLSAzVkg3A5TLcRoLtf3Es5e4ubh0RVoCElU1gLBVRQCc2INAdFLBDpqchZgavm2RllsDp9c1AQTv8pOWrNqMX2qQUO_uXF9JZpeJP8YnAC7e1XXtF3DWX-9waXg_g2JrbKxGLu3xTGau5g0IvL5DCTNR4uCIfVgTsS8tBbQKSBgN07qJOgB8prM_a5dAE5Y6F3Rd12-YXC37zwIngYWQ7ka_pOKdB98g6xXOKLWeltuZRvpqyQ32CYMKQXJpwubUh0xWAdND0kOQHj56Kyv2zGy2eOazS5v_68PrY4OYTqKBUEeh_AhO1TUYWj3X9vkDtcKye03d_nArxMstoHkaRE-3dwB3DmbYOKtGmfivQ1dwdW7dAEpj4zsuK49wKtu-ooH6rLxd8N2Z8owUQ6wPeOtfPgRb8VKl1tkgFIiE5hupHn-sXuC9ies_QaONKgOoaLt7uXOiIAx5ULw8jtv0iRL9wlkAQzcIv2U2cAy-QSlfzpczM8yUbBhtQOBs0DaF1iLBzztodvZvkvcG4CJXwCjnFaYwbDkI6yPipus8_0kilbJUzyBtG8NKhTseGgYqbdcA4T9t5WoIb2rKjiK1EdQuGysMjHy_H1hy8C7BK1Id5jlSOPTiZS6z4rWnzEjYupiHiAp8LR5_MWIjjaW9IjSanvZdS_zBUvrCiGDb549ep3PVLcD_tzyH49LDnwbW-NArsNwByiXRNFKD72RN_I8F0GSB-poi0fE4_EAg254xkGUvdVTEJSVC1Kcwe8bUetC9Bhn_27bxPf5EadTJK6lfA5uwDoZqfhB1bI5CIxEw1ylLSX1e4w-babjmAbRoBIos2dPms2PJqKQ9I0XTXOgEmN0JRg16UWQ9jSyZaF5zBG9PP_PLCbOJ20RnLXdxV76ohLuIE7TGI9JfJr5aC3y3cdxj8TqXZVnwArXwKSfKz_VeAKjwt1Aw7f0X98N17L872Tb9U7u_MVB89FqHkxD98pUvMUnW7-9pJQkhD8I-fWcP-bWf6KmfWnFywHrrpAnmPGu9pNFkzEHRLbT_bmj3JQxOQkrba7o9Eu1WHNw8tfHS1NOiP5evey5gZB7Ur8Ski83W3GCfmwxnuuj6aB58tsHJXaFbmwo-T1ILm_Dsdw6CRZyu68F4FPAvu60yrX2YLHS-N1xqsXV-emHp0wbAA5P_Hk_D0BHTYCntAMGyTE-gMoNXRLS_XfcztEkhjGam5TP07n8XBMo11tvX7xmCHievH0riF7L1zEf7AoUbBrA5MsBqeD9BjD8WVUF1IlQ_lBEZpPRxSTmoRkZFuWokmos-TiufquqlQlgs-4YfwYfCgCC2TOM7cWAYw4UV0mequ0nv2fFA972uaIuqOa2W0dkfxX434DTmb4_RupNevyi3JgQxWY9uuuC9enOGf5VpCDhz7sFsbrmSA55rH-EKdizNa7nvlCXC2HAY-u_8M6wxDCeQhC84QAlFfjWp3YaewPdvN3lXDLfN9iaW_voSFX_vv7OYDdU24l8ZaPn6fAJ5WcjlGtCFUPLIPHXGiBZI2EO-n4MZ9ftFJAWYk3VCiXjnRvP1Cqd2m_SuPP-GCUzEF2p1NnqsXZ4Q57YeUBCIydSNa02a4Ss1Ab4t2sg_hLqj0SRUith6oho-HB5w65-5BlepuymJPgq0b1YqpSVnuyAgyiyYQNE9LctNgms2AQeSw4QVMdyTFajf2-fry0CL8WqOad1bfo64TCrpVE28CwVroJ-t_YKI_w1NROzy_TRiRmmmtICvVurfmwtQB4oPgc7wlS2UDrppEvnQ_GeBeMEXFqO_EH-GHrugGmi33iz3ZrILdHJJH_O1eKa6EOREZ9mvJ3aiR23zagp07qZ7lOSCz_GIFY8S3hBQNgfYuZCYhWiaJGDkMwRsqG8_6o08P4sHJMLP2UTy6B_JNVvzDFlWo3FFXxESKdA2hyRe2Z6Y8C9aNgfpP7YrpM8rDk_UehyUwGBuYMgxCd3R9AeK7hkX7MNYB2rPl3dUQnVZiAaXkgE-YLtjN_e9QUy6TlebrF2-FEpN9OhTYi-WbEpSsagVm717IB3xBo7f1RFt5i_lxf2fuqAa_I5Lo8qU_bD8M_kZCL4Sh2bE2i8wkbTbuHnF1Gtaj6i5iuLSx_6q4anSbaxqSTWhaym5VDWTksV1cr7PJsga_3MPic26EZc1tlTbmVjeDmoHdSv99f1GDBK2hogqSrud-7gbMMQppofC8-7pjlEL_z-9_0oKlHhHVXCYg0yiQqk_w07-CfJ4cehU1LeC6nu-6NyU1iGVmJumxIkHT1FCa6ZPYRBcWGSw-MjBNp0l3l3jIOfsSWfoLOQVmbKze1Br4rHuB922J0Dwh8.0YAiHJMnOfXFeATSs_vKJg**
Content-Type: application/json
Date: Thu, 13 Sep 2018 10:28:51 GMT
Content-Length

My regular expression is : regular expression extractor but i am getting multiple values using this expression . How to get only one value of Authorization Token ? Please let me know .

Answer 1

Authorization: "(.*?)"

And then use the Template $1$

Answer 2

Your issue can occur due to white space(s), change your Regular expression:

Authorization:(\s+)(.*)

And then use Template $2$, this will ignore any white spaces before the values

Answer 3

From what I can see using "RegExp Tester" mode of the View Results Tree listener there is only one match for your headers:

Make sure to place the Regular Expression Extractor as a child of the HTTP Request sampler which header value you want to extract as the Regular Expression Extractor is sensitive to the Scoping Rules therefore if it is located at the same level as HTTP Request samplers - it will extract the headers from all of them.