How to use

getJson

method

in

com.jfinal.json.FastJson

public String createJwtToken(Map map) {
  SecretKey secretKey = generalKey();
  SignatureAlgorithm signatureAlgorithm = SignatureAlgorithm.HS256;
  long nowMillis = System.currentTimeMillis();
  Date now = new Date(nowMillis);
  map.put("isuuedAt", nowMillis);
  String subject = FastJson.getJson().toJson(map);
  JwtBuilder builder = Jwts.builder()
      .setIssuedAt(now)
      .setSubject(subject)
      .signWith(signatureAlgorithm, secretKey);
  if (jwtConfig.getValidityPeriod() > 0) {
    long expMillis = nowMillis + jwtConfig.getValidityPeriod();
    builder.setExpiration(new Date(expMillis));
  }
  return builder.compact();
}

/**
 * 将 json字符串 转为Object
 * @param jsonString json字符串
 * @param valueType 结果类型
 * @param <T> 泛型标记
 * @return T 结果
 */
public static <T> T parse(String jsonString, Class<T> valueType) {
  if (jsonFactory == null) {
    // return Json.getJson().parse(jsonString, valueType);
      
      Json json = Json.getJson();
      // JFinalJson 不支持 parse
      if (json instanceof com.jfinal.json.JFinalJson) {
        return FastJson.getJson().parse(jsonString, valueType);
      } else {
        return json.parse(jsonString, valueType);
      }
  }
  return jsonFactory.getJson().parse(jsonString, valueType);
}

public Map parseJwtToken(String token) {
  SecretKey secretKey = generalKey();
  try {
    Claims claims = Jwts.parser()
        .setSigningKey(secretKey)
        .parseClaimsJws(token).getBody();
    String subject = claims.getSubject();
    if (StrUtils.isBlank(subject)) {
      return null;
    }
    return FastJson.getJson().parse(subject, HashMap.class);
  } catch (SignatureException | MalformedJwtException e) {
    // don't trust the JWT!
    // jwt 签名错误或解析错误，可能是伪造的，不能相信
  } catch (ExpiredJwtException e) {
    // jwt 已经过期
  } catch (Throwable ex) {
    //其他错误
  }
  return null;
}