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README
Apache-2.0

jpassport

1.概述

jpassport是根据token机制实现的登录权限校验模块。经历了大型社交网络的生产环境考验,能应对高并发场景,可以集群化部署
Passport for Java project via userId and token

GitHub地址为https://github.com/liushaoming/jpassport

建议访问GitHub以获取作者的更多分布式项目源码https://github.com/liushaoming?tab=repositories

jseckill是怎么诞生的?

作者liushaoming 之前在做公司的一个大型社交类App后台项目中,开发了这个登录模块。当时是用Spring MVC做的,
后来开源出来,现在改成了最新的Spring Boot2.X 。经过大型社交网络系统的高并发场景的长期考验。说明了
jseckill能够支撑起大型互联网项目

为什么需要token机制来进行权限校验呢?

在分布式环境中,因为站点是集群的,不可能使用tomcat的session来保存用户的登录状态。微服务架构也需要
做成无状态的服务,这就需要token机制来做用户权限校验了。
这里,基于Spring的Interceptor来拦截指定的需要权限验证的
Controller里的method,去校验userId + token。就可以实现它。

2.技术选型

1.Spring + Spring Boot 2.X + MyBatis. 可用于SpringMVC或者SpringBoot项目
2.maven3.0
3.Jdk1.8+
4.mysql或者其他的数据库
5.Redis

3.jpassport-lib权限认证模块的使用

如何使用jpassport-lib库,参考项目jpassport-web

Usage:
Step1:

git clone https://github.com/liushaoming/jpassport.git 

Step2: 安装fpassport-lib.jar到本地的maven仓库
进入fpassport-lib目录
cd jpassport-lib
mvn install

Step3: 在你自己的SpringMVC或者SpringBoot项目中引用fpassport-lib.jar
在自己的项目的pom.xml中增加下面的依赖

<dependency>
    <groupId>com.appjishu</groupId>
    <artifactId>jpassport-lib</artifactId>
    <version>1.0.0-SNAPSHOT</version>
</dependency>

Step4. 数据库建表SQL在doc/db/xxx.sql
根据fly_token.sql和fly_user.sql建立两个表fly_token和fly_user
把flylib-site里面的resources/property/jdbc.properties和redis.properties改成自己的数据库和redis配置

Step5. 启动jpassport-web项目(或者你自己的项目) 在IDEA/eclipse里,找到jpassport-web下的App.java, 右键--Debug

打开浏览器,访问

http://localhost:20100/

正常情况,浏览器会显示文本如下

this is jpassport home page.

4.测试

下面是一些测试url

注册账号-- http://localhost:20100/passport/register?username=13011111111&password=123456&accountType=1
用手机号作为用户名登录,并获取token--

http://localhost:20100/passport/login?username=13011111111&password=123456&accountType=1

登录成功后,后台会返回token给前端, 前端调用任何需要认证的所有http接口都需要在请求头(headers)带上参数userId和token 例如--

url: http://localhost:20100/account/getInfo
type: post
headers: 
        userId=5
        token=069473bedcc609b0d25d6746c11760e5

你可以用postman来测试,效果图如下





5.源码分析

核心原理概述 使用Spring Web的Interceptor来拦截http request里的header里的参数userId,token

后台认证, 对比存在Redis中的token (持久化到了MySQL里)

token,在注册时候生成,在用户修改密码后,token会被后台更新,踢掉别的客户端操作。

token存在Redis里,适合分布式认证的场景。属于轻量级的可靠认证。

5.1 指定特定的Controller,让它里面的所有的action都被登录校验

使用了注解@AuthController
同时使用了org.flylib.passport.intercepter.LoginInterceptor

LoginInterceptor的主要代码

@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
        throws Exception {

    if (handler.getClass().isAssignableFrom(HandlerMethod.class)) {
        HandlerMethod handlerMethod = (HandlerMethod) handler;
        logger.info("进入拦截器...........");
        Object controller = handlerMethod.getBean();
        printParameters(request, controller);
        // 访问需要登录的接口那些
        // 被@AuthController注解的Controller
        boolean present = controller.getClass().isAnnotationPresent(AuthController.class);
        if (!present) {
            return true;
        }

        String userIdStr = request.getHeader("userId");
        String token = request.getHeader("token");

        if (!StringUtils.isEmpty(userIdStr)) {
            logger.info("访问需要登录的接口(Authed)...........");
            if (StringUtils.isEmpty(token)) {
                flushError(response, AuthResponseCode.TOKEN_IS_NULL, AuthResponseCode.TOKEN_IS_NULL_DESC);
                return false;
            }
            Passport passport = loginIntercepterService.getPassport(Long.valueOf(userIdStr));
            String storedToken = passport.getToken();
            if (StringUtils.isEmpty(storedToken)) {
                flushError(response, AuthResponseCode.TOKEN_EXPIRED, AuthResponseCode.TOKEN_EXPIRED_DESC);
                return false;
            } else if (!storedToken.equals(token)) {
                flushError(response, AuthResponseCode.TOKEN_INVALID, AuthResponseCode.TOKEN_INVALID_DESC);
                return false;
            }

        } else {
            flushError(response, AuthResponseCode.USER_ID_IS_NULL, AuthResponseCode.USER_ID_IS_NULL_DESC);
            return false;
        }
        // 被@AuthController注解的 结束

    }

    boolean flag = isPermission(request, response);
    logger.info("isPermission:" + flag);
    return flag;
}

会去判断客户端当前访问的Controller是否被@AuthController注解
如果被它注解,了就会进入权限鉴定逻辑。
鉴权逻辑,会提取http headers里面的userId和token值。
后台根据userId去redis查询正确的token(如果没有就去数据库中查询,redis提高了访问数据速度)
如果存储的token跟header里的token相等,则LoginInterceptor给与放行,继续执行MVC里的业务逻辑;
否则,拒绝放行,就是直接把报错的code和codeDes描述以json字符串返回给http客户端。

6. Q&A 答疑

6.1 关于为什么把userId和token放在header里

本来可以放在http parameter(http body)里。 因为http参数里面可能有很多用户自己的参数
都放在一起会比较混乱。 比较规范的做法是把这些权限认证之类的放在请求头headers里

6.2 userId和token在客户端存放在哪里

http客户端,需要存放在cookie中,每次请求的时候,需要从cookie中读取;
Android客户端,可以存放在SharedPreferences里面;

6.3 为什么使用Spring Boot 2.X ?

因为Spring Boot适合快速构建Spring应用。 而且这里及时更新到Spring Boot 2.X。 免去了获取代码的程序员自己去升级。开箱即用。

联系作者

联系方式
Leader liushaoming
email liushaomingdev@163.com
QQ 944147540

有代码改进优化的建议的统一在Issues里面提
加群讨论

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简介

token登录模块, SpringBoot2 展开 收起
Java
Apache-2.0
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