我正在构建一个服务器端REST服务应用程序。我对JWT身份验证令牌有问题。签到后，我可以很容易地拿到钱(这里我用邮递员)。
但是，当我试图验证使用相同令牌访问受保护的REST控制器的请求时，我会得到以下错误：
代码语言：javascript运行复制io.jsonwebtoken.SignatureException: JWT signature does not match locally computed signature. JWT validity cannot be asserted and should not be trusted.
at io.jsonwebtoken.impl.DefaultJwtParser.parse(DefaultJwtParser.java:354)
at io.jsonwebtoken.impl.DefaultJwtParser.parse(DefaultJwtParser.java:481)
at io.jsonwebtoken.impl.DefaultJwtParser.parseClaimsJws(DefaultJwtParser.java:541)
at com.configuration.jwt.JwtTokenUtil.extractClaims(JwtTokenUtil.java:104)
at com.configuration.jwt.JwtTokenUtil.getUsernameFromToken(JwtTokenUtil.java:39)
at com.configuration.jwt.JwtAuthenticationFilter.doFilterInternal(JwtAuthenticationFilter.java:44)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
...这就好像应用程序不记得它生成的令牌。下面是生成此错误的Postman的get请求：
我想异常的来源是我的类extractClaims的JwtTokenUtil方法。
代码语言：javascript运行复制@Component
public final class JwtTokenUtil {
public static final int EXPIRATION_IN_SECONDS = 120;
private static final String JWT_SECRET = "Some$ecretKey";
private Clock clock = DefaultClock.INSTANCE;
@Value("${jwt.secret}")
private String secret;
@Value("${jwt.expiration}")
private Long expiration;
private JwtTokenUtil() {
// Hide default constructor
}
public String getUsernameFromToken(String token) {
return extractClaims(token).getSubject();
}
public Boolean validateToken(String token, UserDetails userDetails) {
UserDetailsImp user = (UserDetailsImp) userDetails;
final String username = getUsernameFromToken(token);
return (username.equals(user.getUsername()) && !isTokenExpired(token));
}
public Date getIssuedAtDateFromToken(String token) {
return extractClaims(token).getIssuedAt();
}
public String generateToken(UserDetails userDetails) {
Map
return doGenerateToken(claims, userDetails.getUsername());
}
private String doGenerateToken(Map
final Date createdDate = clock.now();
final Date expirationDate = calculateExpirationDate(createdDate);
return Jwts.builder().setClaims(claims).setSubject(subject).setIssuedAt(createdDate)
.setExpiration(expirationDate).signWith(SignatureAlgorithm.HS512, secret).compact();
}
private Date calculateExpirationDate(Date createdDate) {
return new Date(createdDate.getTime() + expiration * 1000);
}
public static String createToken(String username, Date issueDate) {
String jwtToken = Jwts.builder().setSubject(username).setIssuedAt(issueDate)
.setExpiration(new Date(issueDate.getTime() + EXPIRATION_IN_SECONDS))
.signWith(SignatureAlgorithm.HS512, JWT_SECRET).compact();
return jwtToken;
}
public static String getSubject(String token) {
Claims claims = extractClaims(token);
return claims.getSubject();
}
public static String refreshToken(String token, long expirationInSeconds) {
final Claims claims = extractClaims(token);
Date now = new Date();
claims.setIssuedAt(now);
claims.setExpiration(new Date(now.getTime() + EXPIRATION_IN_SECONDS));
return createTokenFromClaims(claims);
}
public static boolean isTokenExpired(String token) {
final Claims claims = extractClaims(token);
Date now = new Date();
return now.after(claims.getExpiration());
}
private static String createTokenFromClaims(Claims claims) {
return Jwts.builder().setClaims(claims).signWith(SignatureAlgorithm.HS512, JWT_SECRET).compact();
}
private static Claims extractClaims(String token) {
return Jwts.parser().setSigningKey(JWT_SECRET).parseClaimsJws(token).getBody();
}
}这是我的JwtAuthenticationFilter课程：
代码语言：javascript运行复制public class JwtAuthenticationFilter extends OncePerRequestFilter {
@Autowired
private UserDetailsService userDetailsService;
@Autowired
private JwtTokenUtil jwtTokenUtil;
@Override
protected void doFilterInternal(HttpServletRequest req, HttpServletResponse res, FilterChain chain)
throws IOException, ServletException {
String header = req.getHeader("Authorization");
String username = null;
String authToken = null;
if (header != null && header.startsWith("Bearer ")) {
authToken = header.replace("Bearer ", "");
try {
username = jwtTokenUtil.getUsernameFromToken(authToken);
} catch (IllegalArgumentException e) {
logger.error("an error occured during getting username from token", e);
} catch (ExpiredJwtException e) {
logger.warn("the token is expired and not valid anymore", e);
}
} else {
logger.warn("couldn't find bearer string, will ignore the header");
}
if (username != null && SecurityContextHolder.getContext().getAuthentication() == null) {
UserDetails userDetails = userDetailsService.loadUserByUsername(username);
if (jwtTokenUtil.validateToken(authToken, userDetails)) {
String role = "";
role = userDetails.getAuthorities().size() > 1 ? "ROLE_ADMIN" : "ROLE_TOURIST";
UsernamePasswordAuthenticationToken authentication = new UsernamePasswordAuthenticationToken(
userDetails, null, Arrays.asList(new SimpleGrantedAuthority(role)));
authentication.setDetails(new WebAuthenticationDetailsSource().buildDetails(req));
logger.info("authenticated user " + username + ", setting security context");
SecurityContextHolder.getContext().setAuthentication(authentication);
}
}
chain.doFilter(req, res);
}
}我不知道控制器的登录是否与这个问题有关，但这是它的代码：
代码语言：javascript运行复制@PostMapping(value = "/signin")
public ResponseEntity signin(@Valid @RequestBody LoginForm loginForm) throws AuthenticationException {
final Authentication authentication = authenticationManager.authenticate(
new UsernamePasswordAuthenticationToken(loginForm.getUsername(), loginForm.getPassword()));
SecurityContextHolder.getContext().setAuthentication(authentication);
final UserDetails user = userService.loadUserByUsername(loginForm.getUsername());
final String token = jwtTokenUtil.generateToken(user);
return ResponseEntity.ok(new JwtResponse(token, user.getUsername(), user.getAuthorities()));
}我希望有人能帮忙。