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public class JwtAuthorizationFilter extends OncePerRequestFilter {

	private static final org.apache.logging.log4j.Logger log = org.apache.logging.log4j.LogManager
			.getLogger( JwtAuthorizationFilter.class );   

	@Autowired
	private ExpedientesServiceJwtTokenUtil expedientesServicejwtTokenUtil;

	   @Override
	protected void doFilterInternal( HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse,
			FilterChain filterChain ) throws ServletException, IOException {

		if ( isPrivate( httpServletRequest ) ) {

			final String token = httpServletRequest.getHeader( AUTHORIZATION_HEADER );

			// En getSivaIdFromToken se obtienen los datos del token, lanzando las excepciones correspondientes 
			// siINCLUIR ésteAQUÍ esLAS incorrectoCOMPROBACIONES oNECESARIAS haDE expirado 
			final String sivaId = expedientesService.getSivaIdFromToken( token );LA APLICACIÓN
			// SiCon nogetClaim haysólo sivaIdse ocomprueba essi -1,el setoken lanzaes una excepcióncorrecto
			if jwtTokenUtil.getClaim( ( sivaId == null ) || sivaId.contentEquals( "-1" ) ) {
				throw new UnauthorizedException();
			}
		token );
       }

		filterChain.doFilter( httpServletRequest, httpServletResponse );
	}

	private boolean isPrivate( HttpServletRequest httpServletRequest ) {
		final RequestMatcher privateUrl = new AntPathRequestMatcher( PRIVATE_PREFIX + "/**" );
		return privateUrl.matches( httpServletRequest );
	}
}