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public class JwtFilter extends BasicHttpAuthenticationFilter {
@Value("${config.refreshToken-expireTime}")
private String refreshTokenExpireTime;
@Autowired
private RedisClient redis;
@Override
protected boolean isAccessAllowed(ServletRequest request, ServletResponse response, Object mappedValue) {
if (this.isLoginAttempt(request, response)) {
try {
this.executeLogin(request, response);
} catch (Exception e) {
String msg = e.getMessage();
Throwable throwable = e.getCause();
if (throwable != null && throwable instanceof SignatureVerificationException) {
msg = "token或者密钥不正确(" + throwable.getMessage() + ")";
} else if (throwable != null && throwable instanceof TokenExpiredException) {
if (this.refreshToken(request, response)) {
return true;
} else {
msg = "token已过期(" + throwable.getMessage() + ")";
}
} else {
if (throwable != null) {
msg = throwable.getMessage();
}
}
this.response401(request, response, msg);
return false;
}
}
return true;
}
@Override
protected boolean onAccessDenied(ServletRequest request, ServletResponse response) throws Exception {
this.sendChallenge(request, response);
return false;
}
@Override
protected boolean isLoginAttempt(ServletRequest request, ServletResponse response) {
return true;
}
@Override
protected boolean executeLogin(ServletRequest request, ServletResponse response) throws Exception {
JwtToken token = new JwtToken(this.getAuthzHeader(request));
this.getSubject(request, response).login(token);
return true;
}
private boolean refreshToken(ServletRequest request, ServletResponse response) {
String token = this.getAuthzHeader(request);
String account = JwtUtil.getClaim(token, JwtConstant.ACCOUNT);
if (redis.hasKey(RedisConstant.PREFIX_SHIRO_REFRESH_TOKEN + account)) {
String currentTimeMillisRedis = redis.get(RedisConstant.PREFIX_SHIRO_REFRESH_TOKEN + account).toString();
if (JwtUtil.getClaim(token, JwtConstant.CURRENT_TIME_MILLIS).equals(currentTimeMillisRedis)) {
String currentTimeMillis = String.valueOf(System.currentTimeMillis());
redis.set(RedisConstant.PREFIX_SHIRO_REFRESH_TOKEN + account, currentTimeMillis,
Integer.parseInt(refreshTokenExpireTime));
token = JwtUtil.sign(account, currentTimeMillis);
JwtToken jwtToken = new JwtToken(token);
this.getSubject(request, response).login(jwtToken);
HttpServletResponse httpServletResponse = (HttpServletResponse) response;
httpServletResponse.setHeader("Authorization", token);
httpServletResponse.setHeader("Access-Control-Expose-Headers", "Authorization");
return true;
}
}
return false;
}
private void response401(ServletRequest req, ServletResponse resp, String msg) {
HttpServletResponse httpServletResponse = (HttpServletResponse) resp;
httpServletResponse.setStatus(HttpStatus.UNAUTHORIZED.value());
httpServletResponse.setCharacterEncoding("UTF-8");
httpServletResponse.setContentType("application/json; charset=utf-8");
PrintWriter out = null;
try {
out = httpServletResponse.getWriter();
String data = JsonConvertUtil.objectToJson(new Result(ResultCode.NOT_LOGIN, msg));
out.append(data);
} catch (IOException e) {
throw new CustomException("直接返回Response信息出现IOException异常:" + e.getMessage());
} finally {
if (out != null) {
out.close();
}
}
}
@Override
protected boolean preHandle(ServletRequest request, ServletResponse response) throws Exception {
HttpServletRequest httpServletRequest = (HttpServletRequest) request;
HttpServletResponse httpServletResponse = (HttpServletResponse) response;
httpServletResponse.setHeader("Access-control-Allow-Origin", httpServletRequest.getHeader("Origin"));
httpServletResponse.setHeader("Access-Control-Allow-Methods", "GET,POST,OPTIONS,PUT,DELETE");
httpServletResponse.setHeader("Access-Control-Allow-Headers",
httpServletRequest.getHeader("Access-Control-Request-Headers"));
if (httpServletRequest.getMethod().equals(RequestMethod.OPTIONS.name())) {
httpServletResponse.setStatus(HttpStatus.OK.value());
return false;
}
return super.preHandle(request, response);
}
}
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