Ċ import Ġcz . pe tr bal at . k lib . spring . jwt . mvc . JWT Authentication Filter Ċ import Ġcz . pe tr bal at . k lib . spring . jwt . mvc . JWT Authorization Filter Ċ import Ġio . json web token . security . Keys Ċ import Ġorg . springframework . security . config . annotation . web . builders . Http Security Ċ import Ġorg . springframework . security . web . authentication . Username Password Authentication Filter Ċ import Ġjava . util .* Ċ import Ġjavax . crypto . SecretKey Ċ import Ġjavax . servlet . http . HttpServletResponse Ċ Ċ internal Ġfun ĠString . to Key (): ĠSecret Key Ġ{ ĊĠĠĠ Ġval Ġto ByteArray Ġ= ĠBase 6 4 . get Encoder (). encode ( toByteArray ()) ĊĠĠĠ Ġreturn ĠKeys . hmac Sha Key For ( toByteArray ) Ċ } Ċ Ċ fun ĠHttp Security . add Exception Handling () Ġ= Ġexception Handling (). authentication EntryPoint Ġ{ Ġ_, Ġresponse , Ġ_ Ġ-> ĊĠĠĠ Ġresponse ?. send Error ( HttpServletResponse . SC _ UN AUTHORIZ ED , Ġ" Unauthorized ") Ċ } ĊĊ Ċ fun ĠHttp Security . add Filters ( authentication Filter : ĠJWT Authentication Filter , Ġauthorization Filter : ĠJWT Authorization Filter ): ĠHttp Security Ġ{ ĊĠĠĠ Ġreturn Ġadd Filter Before ( authentication Filter , ĠUsername Password Authentication Filter :: class . java ) ĊĠĠĠĠĠĠĠĠĠĠĠ Ġ. add Filter After ( authorization Filter , ĠJWT Authentication Filter :: class . java ) Ċ } Ċ