报错：

[2021/02/02-10:05:39] [http-nio-8080-exec-8] [ERROR] [org.apache.catalina.core.ContainerBase.[Tomcat].[localhost].[/].[dispatcherServlet]] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.IllegalArgumentException: JWT String argument cannot be null or empty.] with root cause

java.lang.IllegalArgumentException: JWT String argument cannot be null or empty.

这是TestController里面的源码：

@Autowired

private CommentDao commentDao;

@PostMapping("/comment")

public ResponseResult testComment(@RequestBody Comment comment, HttpServletRequest request){

String content = comment.getContent();

log.info("comment content == > " + content);

//还有得知评论的是谁，对这个评论，身份进行确定

String tokenKey = getCookie(Constants.User.COOKIE_TOKE_KEY, request);

if(tokenKey == null){

return ResponseResult.FAILED("账号未登录");

}

String token = (String) redisUtils.get(Constants.User.KEY_TOKEN + tokenKey);

if (token == null) {

//为空就是过期了，但是可能登陆过了，可以去查refreshToken

//如果refreTokem不存在或者已经过期

//告诉用户账号未登录

}

//已经登录过，解析token

Claims claims = JwtUtil.parseJWT(token);

String userId = (String) claims.get("id");

comment.setUserId(userId);

String avatar = (String) claims.get("avatar");

comment.setUserAvatar(avatar);

String userName = (String) claims.get("userName");

comment.setUserName(userName);

comment.setCreateTime(new Date());

comment.setUpdateTime(new Date());

comment.setId(idWorker.nextId() + "");

commentDao.save(comment);

return ResponseResult.SUCCESS("评论成功!");

}

这是JwtUtil里面的源码：

/**

* @param claims 载荷内容

* @param ttl 有效时长

* @return

*/

public static String createToken(Map<String, Object> claims, long ttl) {

JwtUtil.ttl = ttl;

return createToken(claims);

}

public static String createRefreshToken(String userId, long ttl) {

long nowMillis = System.currentTimeMillis();

Date now = new Date(nowMillis);

JwtBuilder builder = Jwts.builder().setId(userId)

.setIssuedAt(now)

.signWith(SignatureAlgorithm.HS256, key);

if (ttl > 0) {

builder.setExpiration(new Date(nowMillis + ttl));

}

return builder.compact();

}

/**

* @param claims 载荷

* @return token

*/

public static String createToken(Map<String, Object> claims) {

long nowMillis = System.currentTimeMillis();

Date now = new Date(nowMillis);

JwtBuilder builder = Jwts.builder()

.setIssuedAt(now)

.signWith(SignatureAlgorithm.HS256, key);

if (claims != null) {

builder.setClaims(claims);

}

if (ttl > 0) {

builder.setExpiration(new Date(nowMillis + ttl));

}

return builder.compact();

}

public static Claims parseJWT(String jwtStr) {

return Jwts.parser()

.setSigningKey(key)

.parseClaimsJws(jwtStr)

.getBody();

}