JSON at the log out put time! ➤ Access Log ➤ Write configuration by hand server.tomcat.accesslog.pattern={"@timestamp":"%{yyyy-MM- dd'T'HH:mm:ss.SSSZ}t","service":"$ {spring.application.name}","type":"access","method":"%m","rem ote":"%a","path":"%U","query":"%q","duration":"%D","status":" %s","bytes":"%B","user-agent":"%{User-Agent}i","referer":"% {Referer}i","session-id":"%S"}