Want to extract particular value from the response and pass it on to next request

Have the following JSON body fetched from JSON extractor using a expression $.namespaces[?(@.type=='account_id')].permissions,

Result[0]=
{
"query_view_only_own": 0,
"location_view": 1,
"user_modify_notifications": 1,
"customcode_edit": 0,
"link_edit": 0,
"dictionary_view": 0,
"study_field_customfield_6385aa2c-f79f-4670-b8b7-9136ebd75ed5": "F",
"study_field_patientid": "F",
"study_field_customfield_9bff67fb-f18e-4de1-982c-1798376881b1": "H",
"study_report_hl7_view_unapproved": 0,
"customfield_edit": 1,
"study_push": 1,
"message_edit": 1,
"radreport_edit": 0,
"destination_search_mwl": 0,
"site_qualify": 1,
"group_view": 1,
"hl7_template_edit": 0,
"study_field_customfield_77bd643b-28fe-4306-b08b-33ea96bfa200": "F",
"study_merge": 0,
"route_edit": 1,
"study_report_delete_approved": 1,
"site_delete": 0,
"study_report_view_unapproved": 0,
"site_edit": 0,
"terminology_edit": 1,
"query_view_meta": 1,
"query_attachment_view": 1,
"study_report_detail": 1,
"role_edit": 1,
"radreport_view_only_own": 0,
"case_edit": 0,
"qctask_prioritize": 1,
"study_duplicate": 0,
"query_view": 1,
"study_field_study_description": "F",
"destination_edit": 1,
"scanner_view": 0,
"analytics_view": 1,
"case_view": 0,
"validate_view": 0,
"case_edit_only_own": 0,
"job_view": 1,
"hl7_transform_view": 0,
"ui_json": "",
"appointment_edit": 0,
"dicomdata_view": 1,
"user_modify_others_email": 1,
"audit_view": 1,
"study_share_group": 1,
"account_user_edit": 1,
"account_view": 1,
"meeting_view": 1,
"patient_view": 0,
"webhook_run": 1,
"customfield_view": 1,
"customfield_list": 1,
"study_download": 1,
"message_view": 1,
"radreport_view": 0,
"study_share_rsna": 0,
"study_thin": 0,
"qctask_add": 1,
"study_browse": 1,
"study_sync": 0,
"hl7_message_view": 0,
"study_delete_image": 0,
"user_modify_others_pkey": 0,
"viewer_config": "",
"study_view": 1,
"account_user_invite": 1,
"study_request_view_inbound": 0,
"study_share_user": 1,
"qctask_edit": 1,
"study_field_patient_birth_date": "F",
"site_view": 0,
"study_report_hl7_view": 1,
"study_upload": 1,
"study_field_customfield_987eb6cd-6e63-4605-812a-06600e721493": "H",
"study_field_customfield_4b2e868b-2438-4597-a8fd-d639ccff942c": "F",
"dictionary_edit": 0,
"route_view": 1,
"study_clone": 0,
"study_share_location": 1,
"location_edit": 1,
"user_setting_set": 0,
"role_view": 1,
"study_status_edit": 0,
"study_report_delete_unapproved": 0,
"study_star": 1,
"user_modify_others_notifications": 0,
"query_edit": 1,
"pathology_upload": 1,
"study_report_delete": 1,
"channel_activity": 1,
"study_field_customfield_8d1fbaeb-c9f2-420c-ad53-73ebc5dfb425": "F",
"destination_search": 0,
"user_modify_defaults": 1,
"patient_edit": 0,
"sharing_rule_edit": 1,
"study_field_customfield_f3caaa4d-ec29-4148-9055-90ca3594a276": "F",
"study_approve": 1,
"node_edit_own": 0,
"site_user_delete": 0,
"query_attachment_delete": 1,
"link_edit_upload": 0,
"terminology_view": 1,
"dicomdata_edit": 1,
"query_add": 1,
"study_report_upload": 1,
"study_take": 0,
"link_view": 0,
"study_comment_view": 0,
"customcode_deploy": 0,
"hl7_transform_edit": 0,
"qctask_delete": 1,
"hl7_template_view": 0,
"webhook_edit": 1,
"site_user_add": 0,
"link_direct": 1,
"study_report_view_only_own": 0,
"namespace_question": 1,
"study_search_require_patient_birth_date": 0,
"node_view": 1,
"purge_edit": 0,
"study_request_view": 0,
"study_edit_unapproved": 1,
"study_send_status_view": 1,
"study_comment_edit": 0,
"study_duplicate_request": 0,
"case_view_only_own": 0,
"study_delete": 0,
"study_report_view": 1,
"annotation_view": 1,
"account_user_view": 1,
"study_field_referring_physician": "F",
"study_share_share_code": 1,
"case_delete": 0,
"study_field_customfield_1fe37b5d-c830-41cd-9beb-06df42c69eb0": "F",
"study_field_patient_name": "F",
"study_edit_approved": 1,
"setting_ip_whitelist": 1,
"filter_edit_only_own": 0,
"study_report_hl7_view_approved": 1,
"location_clone": 0,
"site_user_view": 0,
"study_manual_route": 0,
"query_attachment_add": 1,
"can_proxy_login": 0,
"study_move": 0,
"appointment_view_only_own": 0,
"study_search_require_patient_sex": 0,
"query_attachment_delete_only_own": 1,
"radreport_html_format": 0,
"study_field_modality": "F",
"user_view_others_notifications": 0,
"study_status_view": 0,
"setting_pacs_config_customized": 1,
"study_report_view_approved": 1,
"order_edit": 0,
"group_clone": 0,
"annotation_view_only_own": 0,
"study_share": 1,
"webhook_view": 1,
"study_download_viewer": 1,
"keyimage_view": 1,
"study_tag": 1,
"study_request_view_only_own": 0,
"study_share_email": 0,
"study_report_upload_unapproved": 0,
"research_edit": 0,
"scanner_add": 0,
"accelerator_edit": 1,
"qctask_view": 1,
"study_download_iso": 1,
"sharing_rule_view": 1,
"study_edit": 1,
"scanner_delete": 0,
"user_request_access": 1,
"research_view": 0,
"study_field_customfield_6480baa2-cd2c-4c60-be92-ddcd09675c45": "H",
"link_edit_pin": 0,
"annotation_edit_only_own": 1,
"study_timing_view": 0,
"site_user_edit": 0,
"study_field_customfield_2ac756f4-c7be-4bb4-90ed-78e36266ade5": "F",
"hl7_message_delete": 0,
"study_request_edit": 0,
"annotation_edit": 1,
"study_split": 0,
"appointment_view": 0,
"study_audio_play": 0,
"node_edit": 1,
"channel_study": 1,
"role_setting_edit": 1,
"query_reply": 1,
"scanner_validate": 1,
"group_edit": 1,
"purge_view": 0,
"query_delete": 1,
"study_status_tags_ignore_rules": 1,
"scanner_edit": 0,
"study_field_accession_number": "F",
"customcode_view": 0,
"user_modify_sharecode": 1,
"study_field_patient_sex": "F",
"study_field_study_date": "F",
"study_search_require_patientid": 0,
"user_edit_shared_filter": 0,
"patient_merge": 0,
"viewer3_config": "",
"study_share_request": 0,
"accelerator_view": 1,
"filter_share": 1,
"user_edit": 1,
"study_field_customfield_dfb98397-2a6d-4075-a4d0-8684cdcde9d9": "F",
"study_freeze": 0,
"study_audio_record": 0,
"study_search_require_patient_name": 0,
"node_approve_connect": 1,
"account_edit": 1,
"study_share_account": 1,
"meeting_edit": 0,
"study_status_manual_edit": 1,
"node_connect": 1,
"order_view": 0,
"validate_edit": 0,
"keyimage_edit": 1,
"study_search_require_accession_number": 0,
"site_add": 0,
"study_upload_validate": 0,
"destination_view": 1,
"study_share_npi": 0,
"study_report_upload_approved": 1
}

What fetch all the study_field_customfield_ and the corresponding value "H" and pass is inside next json request object how to do it in JMeter ?

part of next request JSON is,

"study_field_accession_number": "F",
"study_field_modality": "F",
"study_field_patientid": "F",
"study_field_patient_birth_date": "F",
"study_field_patient_name": "F",
"study_field_patient_sex": "F",
"study_field_referring_physician": "F",
"study_field_study_date": "F",
"study_field_study_description": "F",
"study_field_customfield_90eb00fa-ae75-4125-bd03-f8793b2a8ef0": "F",
"study_field_customfield_fcfca2fe-308d-48ac-80a6-e2f49e313151": "F",
"study_field_customfield_4420ac5e-6d4f-4b02-8a44-24871f97861b": "H",
"study_field_customfield_70d1c4de-dbd4-47e5-9f1f-4f3e323e25ed": "H",
"study_field_customfield_c3243b67-4982-40c5-b5c9-ce64811425e2": "F",
"study_field_customfield_c3fb12a2-d89b-4427-be45-7c92a9c7ef70": "F",
"study_field_customfield_89755cc7-8df0-44c4-98bb-6e0767684bd4": "F",
"study_field_customfield_a46034ac-2bf9-4d9d-a815-20cf86155a37": "H",
"study_field_customfield_f4095a86-12cf-4482-958d-1a3b012f83be": "F",
"study_field_customfield_b0ba863e-5f8c-43a6-8890-8afc1af2d460": "F",
"study_field_customfield_4a41f25b-677e-4f81-bb74-00c54a010833": "F",
"setting_pacs_config_customized": 1

Cannot hardcoded it as study_field_customfield_4a41f25b-677e-4f81-bb74-00c54a010833 they keep on changing for every other request.

I tried with following but it is giving me blank value,

import groovy.json.JsonSlurper;
def extractedValue = vars.get("pre_responseJSON");
def customeField = new groovy.json.JsonSlurper().parseText(extractedValue).permissions.findAll{
it.getKey().startsWith('study_field_customfield_')
};
log.info(":"+customeField+":"); 

There is no permissions object in your variable, you should remove it from the filtering code snippet like:

def customeField = new groovy.json.JsonSlurper().parseText(extractedValue).findAll{
it.getKey().startsWith('study_field_customfield_')
}

More information:

• Apache Groovy: Parsing and producing JSON
• Apache Groovy: What Is Groovy Used For?