so on the header...you write localhost:8080/structs 2. 3-15.blank/example/login.action
https://pentest-tools.com/blog/exploiting-ognl-injection-in-apache-struts
https://www.publico.pt/2012/12/03/jornal/angelo-correia-e-marques-mendes-surpreendidos-por-terem-sido-fundadores-25688684