PROSAGA码农传奇-可信计算-如何将JwtFilter异常传递给服务器JSON答案？

我的JwtFilter：
<pre><code> public class JWTAuthorizationFilter extends BasicAuthenticationFilter {

public JWTAuthorizationFilter(AuthenticationManager authManager) {
        super(authManager);
    }

@Override
    protected void doFilterInternal(HttpServletRequest req,
                                    HttpServletResponse res,
                                    FilterChain chain) throws IOException, ServletException {
        String header = req.getHeader("Authorization");

if (header == null || !header.startsWith("Bearer ")) {
            chain.doFilter(req, res);
            return;
        }

UsernamePasswordAuthenticationToken authentication = getAuthentication(req);

SecurityContextHolder.getContext().setAuthentication(authentication);
        chain.doFilter(req, res);
    }

private UsernamePasswordAuthenticationToken getAuthentication(HttpServletRequest request) {
        String token = request.getHeader("Authorization");
        if (token != null) {
            // parse the token.

byte[] keyBytes = Decoders.BASE64.decode("kaslsafdhlkjsdfhlksjdafhlaksjdfhlaskajdhflaksdaf87687687asdafasdhfasdfsdfdfjalskjfhlaskdhflasdjhl3434");
            Key key = Keys.hmacShaKeyFor(keyBytes);

String cleanToken = token.replace("Bearer ", "");
            String user = Jwts.parser().setSigningKey(key).parseClaimsJws(cleanToken).getBody().getSubject();

if (user != null) {
 return new UsernamePasswordAuthenticationToken(user, null, new ArrayList<>());
 }
 return null;
 }
 return null;
 }
}
</code></pre>并抛出“ JWT签名与本地计算的签名不匹配。JWT有效性无法断言并且不应被信任。” 例外。我试图抓住它authenticationEntryPoint(new JwtAuthenticationEntryPoint())：
<pre><code> @Component("restAuthenticationEntryPoint")
public class JwtAuthenticationEntryPoint implements AuthenticationEntryPoint {

public void commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException authenticationException) throws IOException, ServletException {

response.setContentType("application/json");
        response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
        response.getOutputStream().println("{ \"error\": \"" + authenticationException.getMessage() + "\" }");

}

}
</code></pre>但是我得到：
<pre><code>{
 "error": "Full authentication is required to access this resource"
}
</code></pre>如何从过滤器获取异常并传递给http答案？