request.getItems().get(0).getUserId();
时间: 2024-05-24 21:11:28 浏览: 13
As an AI language model, I do not have access to the specific context of this code snippet. However, based on what I can infer from the code, this line of code is likely retrieving the user ID of the first item in the list of items obtained from a request object.
The `getItems()` method is likely returning a list of items, and `get(0)` is used to retrieve the first item in the list. Finally, the `getUserId()` method is likely a method of the item object that returns the user ID associated with the item.
Overall, this line of code is likely used to retrieve the user ID of the first item in a list of items obtained from a request object.
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if(tokenEntity != null) { request.getSession().setAttribute("userId", tokenEntity.getUserid()); request.getSession().setAttribute("role", tokenEntity.getRole()); request.getSession().setAttribute("tableName", tokenEntity.getTablename()); request.getSession().setAttribute("username", tokenEntity.getUsername()); return true; }
这段代码用于将获取的TokenEntity信息存储到HTTP会话(Session)中,以便后续的请求可以获取用户信息。具体来说,它首先判断变量tokenEntity是否为空,如果不为空,则将TokenEntity中的userid、role、tablename、username等字段取出来,并将它们存储到HTTP会话中的相应属性中。
通过将用户信息存储到HTTP会话中,后续的请求就可以通过获取HTTP会话中的相应属性来获取用户信息,从而判断请求是否合法。
最后,返回true,表示当前请求已经通过身份认证,可以继续处理。
try { //获取用户载荷 authorizationToken = authorizationToken.substring(7); //检查redis 只要有就继续 Long remainTime = redisUtils.getExpiredTime(BusinessConstant.JWT_REDIS_KEY.getKey() +authorizationToken, TimeUnit.SECONDS); if (remainTime <= 0) { throw new AuthorizationException(BusinessCode.NOT_AUTHORIZED.getCode(), BusinessCode.JWT_SIGNATURE_EXCEPTION.getMsg()); } //检查签名 JwtPayLoad<UserVo> payLoadFromJwt = JwtUtils.getPayLoadFromJwt(authorizationToken, publicKey, UserVo.class, BusinessConstant.SYSTEM_JWT_PAYLOAD_KEY.getKey()); //redis续期时间 min long now = System.currentTimeMillis(); long jwtExpiredTime = payLoadFromJwt.getExpiredTime().getTime(); long reNewTime = Long.parseLong(BusinessConstant.JWT_RENEW_TIME.getKey()) * 60 * 1000; //判断是否需要续期 if (jwtExpiredTime - now <= reNewTime) { //获取旧的用户属性 UserVo user = payLoadFromJwt.getPayLoadData(); //过期时间 int expiredTime = Integer.parseInt(BusinessConstant.JWT_EXPIRED_TIME.getKey()); String jwtTokenWithExpireTimeMinutes = JwtUtils.createJwtTokenWithExpireTimeMinutes(user, rsaProperties.getPrivateKey(), expiredTime, BusinessConstant.SYSTEM_JWT_PAYLOAD_KEY.getKey(), BusinessConstant.SYSTEM_JWT_ISS.getKey()); redisUtils.setNewAndDeleteOldWithExpiredTime(BusinessConstant.JWT_REDIS_KEY.getKey() + jwtTokenWithExpireTimeMinutes, user.getName() + ":" + user.getUserId(),BusinessConstant.JWT_REDIS_KEY.getKey() +authorizationToken, expiredTime, TimeUnit.MINUTES); response.setHeader(BusinessConstant.JWT_REQUEST_HEAD.getKey(), jwtTokenWithExpireTimeMinutes); log.info("====客户端:" + ipAddr + " 用户:" + user.getName() + " -- (" + user.getUserId() + ") token续期成功!!!!"); }
这段代码是一个 Java 代码块,其中包含了一些逻辑代码。这段代码主要是用于实现用户认证和 JWT Token 的续期功能。下面是对代码块中各行代码的解释:
1. `authorizationToken = authorizationToken.substring(7);`:从请求头中获取 JWT Token,去掉前缀 "Bearer ",并将其赋值给变量 authorizationToken。
2. `Long remainTime = redisUtils.getExpiredTime(BusinessConstant.JWT_REDIS_KEY.getKey() +authorizationToken, TimeUnit.SECONDS);`:从 Redis 中获取 JWT Token 的剩余过期时间,单位为秒,并将其赋值给变量 remainTime。
3. `if (remainTime <= 0) {throw new AuthorizationException(BusinessCode.NOT_AUTHORIZED.getCode(), BusinessCode.JWT_SIGNATURE_EXCEPTION.getMsg());}`:如果 JWT Token 已经过期,则抛出一个自定义异常 AuthorizationException,该异常包含了错误码和错误信息。
4. `JwtPayLoad<UserVo> payLoadFromJwt = JwtUtils.getPayLoadFromJwt(authorizationToken, publicKey, UserVo.class, BusinessConstant.SYSTEM_JWT_PAYLOAD_KEY.getKey());`:使用公钥 publicKey 解析 JWT Token,并获取其中的 Payload 数据,即 JWT Token 中携带的用户信息。
5. `long jwtExpiredTime = payLoadFromJwt.getExpiredTime().getTime();`:从 Payload 中获取 JWT Token 的过期时间,并将其赋值给变量 jwtExpiredTime。
6. `long reNewTime = Long.parseLong(BusinessConstant.JWT_RENEW_TIME.getKey()) * 60 * 1000;`:从配置文件中获取 JWT Token 续期时间,单位为分钟,并将其转换为毫秒,并将其赋值给变量 reNewTime。
7. `if (jwtExpiredTime - now <= reNewTime) {...}`:如果 JWT Token 的过期时间与当前时间的差值小于等于续期时间,则进行续期操作。
8. `UserVo user = payLoadFromJwt.getPayLoadData();`:从 Payload 中获取用户信息,并将其赋值给变量 user。
9. `int expiredTime = Integer.parseInt(BusinessConstant.JWT_EXPIRED_TIME.getKey());`:从配置文件中获取 JWT Token 的过期时间,单位为分钟,并将其转换为整数,并将其赋值给变量 expiredTime。
10. `String jwtTokenWithExpireTimeMinutes = JwtUtils.createJwtTokenWithExpireTimeMinutes(user, rsaProperties.getPrivateKey(), expiredTime, BusinessConstant.SYSTEM_JWT_PAYLOAD_KEY.getKey(), BusinessConstant.SYSTEM_JWT_ISS.getKey());`:使用私钥 rsaProperties.getPrivateKey() 生成新的 JWT Token,并指定其过期时间和 Payload 数据。
11. `redisUtils.setNewAndDeleteOldWithExpiredTime(BusinessConstant.JWT_REDIS_KEY.getKey() + jwtTokenWithExpireTimeMinutes, user.getName() + ":" + user.getUserId(), BusinessConstant.JWT_REDIS_KEY.getKey() + authorizationToken, expiredTime, TimeUnit.MINUTES);`:将新生成的 JWT Token 和 Redis 中旧的 JWT Token 进行替换,并设置过期时间为 expiredTime 分钟。
12. `response.setHeader(BusinessConstant.JWT_REQUEST_HEAD.getKey(), jwtTokenWithExpireTimeMinutes);`:将新生成的 JWT Token 放入响应头中,以便客户端获取。
13. `log.info("====客户端:" + ipAddr + " 用户:" + user.getName() + " -- (" + user.getUserId() + ") token续期成功!!!!");`:记录续期操作的日志信息,包括客户端 IP 地址、用户名称和用户 ID。