TokenProvider.java 文件源码

public Authentication getAuthentication(String token) {
    Claims claims = Jwts.parser()
        .setSigningKey(secretKey)
        .parseClaimsJws(token)
        .getBody();

    Collection<? extends GrantedAuthority> authorities =
        Arrays.stream(claims.get(AUTHORITIES_KEY).toString().split(","))
            .map(SimpleGrantedAuthority::new)
            .collect(Collectors.toList());

    User principal = new User(claims.getSubject(), "", authorities);

    return new UsernamePasswordAuthenticationToken(principal, token, authorities);
}