SpringSecurity实战(八)-通用第三方登陆-自定义认证配置实现

た入场券 2022-12-27 07:43 249阅读 0赞

### 文章目录 ###

*   *  目标
     *  通用第三方登陆设计
     *   *  思路
         *   *  自定义登陆流程
     *  代码实现
     *   *  核心依赖
         *  创建第三方授权应用
         *  调用第三方平台部分
         *   *  login.html
             *  controller 层
             *  service 层
             *  核心配置
             *  通用第三方登陆配置
         *  本系统的授权认证部分
         *  认证流程一：已经绑定现有用户流程
         *   *  OtherSysOauth2LoginFilter
             *  OtherSysOauth2LoginAuthenticationToken
             *  OtherSysOauth2LoginProvider
             *  OtherSysOauth2LoginUserDetailsServiceImpl
             *  认证成功事件或者失败事件
         *  认证流程二：没有绑定现有用户流程
         *   *  绑定用户页面
             *  UserBindFilter
             *  BindAuthenticationToken
             *  BindLoginProvider
             *  UserDetailsServiceImpl
         *  核心配置
     *  综上所述

## 目标 ##

*  了解JustAuth对接SpringSecurity通用第三方登陆

参考：[JustAuth][]

[SpringSecurity实战(五)-认证流程源码分析][SpringSecurity_-]

[查看github账户授予权限的应用][github]

[markdown画流程图，流程图语法][markdown]

上篇已经介绍了第三方登陆相关概念和一些流行框架。

## 通用第三方登陆设计 ##

需求：参考Gitee 网站的第三方登陆实现流程，将其他第三方平台接入系统，并融入SpringSecurity的管理中。

选用框架：基于Justauth框架的实现，对接Spring Security。（如果不使用Spring Security，只需要使用justauth框架即可。）

登陆流程：

回调本系统

Yes

用户输入用户名密码进行绑定

第三方登陆

触发第三方平台授权

判断第三方平台数据存在本系统

触发本系统登陆流程

触发用户绑定流程

第三方登陆分两种情况：  
1，（已绑定用户）第三方平台授权，直接登陆  
2，（未绑定用户）第三方平台授权，用户绑定后，登陆

![20201208221222783.png][] ![2020120822125021.png][] ![20201208221318245.png][]

### 思路 ###

关于第三方登陆实现：

直接参考 JustAuth 提供的说明文档，简单明了。[JustAuth][]

关于对接Spring Security的思路：

在前几篇介绍中，我们使用了Spring Security 进行系统的认证和授权，提供了基于用户名和密码表单登陆的方式，并且使用了Spring Session 和 Redisson 框架来管理会话信息。那么第三方登录将作为本系统用户登陆方式的一种扩展，我们期望不要由于第三方登录的出现，修改之前的认证授权流程和会话管理。所以自定义一套认证流程是一个不错的选择。

有一个大家比较关心的问题：

**第三方用户信息怎么与现有用户系统整合？**

最简单的就是设计一张第三方用户信息表，将第三方用户信息绑定到现有用户信息上。在登陆过程后，将第三方用户信息替换为现有用户信息实现登陆。

-- 第三方系统用户表
    CREATE TABLE `other_sys_user` (
      `id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT '主键',
      `scope` varchar(64) DEFAULT NULL COMMENT '第三方系统',
      `uuid` varchar(64) DEFAULT NULL COMMENT '第三方系统唯一账户',
      `user_id` bigint(20) DEFAULT NULL COMMENT '关联系统用户表的id',
      `username` varchar(64) DEFAULT NULL COMMENT '登陆用户名',
      `create_time` datetime DEFAULT NULL COMMENT '绑定时间（创建时间）',
      `update_time` datetime DEFAULT NULL COMMENT '更新时间',
      PRIMARY KEY (`id`),
      KEY `idx_user_id` (`user_id`) USING BTREE COMMENT '用户id索引'
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8;

一个现有用户可能会匹配多个第三方系统的用户信息（1：n）。

JustAuth也给出一种登陆方案： [JustAuth与用户系统整合流程图][JustAuth 1] 可以参考学习

**怎么设计一个通用的第三方登陆实现呢？**

无论是要对接哪个平台，只需简单的配置，就可以实现第三方系统登陆。

每个平台厂商对OAuth2的实现不同，api接口等会不一样。JustAuth框架提供了大多数平台的对接接口，在一定程度上屏蔽了登陆的平台差异。对于我们实现的难点，在于怎么知道用户选择了那个第三方平台授权登陆。想知道这个很easy，用户使用哪个平台登陆，就将对应平台的syscode（比如 qq，github等等），当做参数传入。

#### 自定义登陆流程 ####

根据上述的登陆流程，会细分出两个认证流程：

1.  已经绑定现有用户的情况下（说明之前已经使用第三方登陆，登陆本系统）。
    
    点击第三方登陆，直接登陆本系统
2.  没有绑定现有用户的情况下（说明第一次使用第三方登陆，登陆本系统）。
    
    点击第三方登陆，判断没有绑定用户，跳转绑定用户界面，绑定后登陆

Created with Raphaël 2.2.0开始OAuth2LoginController/api/login/\{sys\} 重定向第三方登陆页面用户选择是否授权？第三方登陆发起回调AbstractAuthenticationProcessingFilter -- doFilter()  OtherSysOauth2LoginFilter -- attemptAuthentication() 用户是否已经绑定？  OtherSysOauth2LoginAuthenticationToken ProviderManager  OtherSysOauth2LoginProvider -- authenticate()    OtherSysOauth2LoginUserDetailsServiceImpl -- loadUserByUsername() 执行认证成功事件或者失败事件结束跳转到绑定登陆页面用户输入用户名和密码绑定登陆AbstractAuthenticationProcessingFilter -- doFilter()  UserBindFilter -- attemptAuthentication()    BindAuthenticationToken ProviderManager  BindLoginProvider -- authenticate() UserDetailsService -- loadUserByUsername()执行认证成功事件或者失败事件结束yesyesno

平行四边形中就是需要创建的类。

**其实OtherSysOauth2LoginAuthenticationToken 以及后面的认证（Provider）用户详情服务可以不用重新创建，直接使用UsernamePasswordAuthenticationToken那一套就可以了。但是为了演示整个认证流程，我还是重写了Token以及认证（Provider）和用户详情服务，万一用上了呢。**

## 代码实现 ##

项目环境：spring boot 2.2.7 Jpa java8 mysql5.7 JustAuth1.15.8

代码参考：https://github.com/gengzi/gengzi\_spring\_security/tree/master/gengzi\_spring\_security

### 核心依赖 ###

<dependency>
                <groupId>me.zhyd.oauth</groupId>
                <artifactId>JustAuth</artifactId>
                <version>1.15.8</version>
            </dependency>

JustAuth 官方文档参考： https://justauth.wiki/\#/

数据库文件：[sys\_manager.sql][sys_manager.sql]

### 创建第三方授权应用 ###

不介绍了，直接参考把，写的非常清楚。

https://justauth.wiki/\# 集成第三方部分。

主要是配置一下回调地址（redirectUri ），例如：http://localhost:8081/api/v1/oauth/callback/\{sysCode\}

注意最后一个参数sysCode ，就是对应平台的code，这也是实现通用第三方登陆的关键。

比如Github网站OAuth2应用，配置：http://localhost:8081/api/v1/oauth/callback/github

比如Gitee网站OAuth2应用，配置：http://localhost:8081/api/v1/oauth/callback/gitee

### 调用第三方平台部分 ###

页面：

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI4ODE3NzM5_size_16_color_FFFFFF_t_70]

#### login.html ####

代码参考：[**login.html**][login.html]

<h2>其他方式登录</h2>
    <button class="but" onClick="other_login('github');" type="button" style="margin-top:10px">github授权登陆</button>
    <button class="but" onClick="other_login('gitee');" type="button" style="margin-top:10px" >gitee授权登陆</button>
     
    <script> // 第三方登陆 function other_login(sys) { window.location.href = "/api/v1/oauth/login?oauthSysCode="+sys; } </script>

--------------------

#### controller 层 ####

代码参考：[Oauth2LoginController][]

@Api(value = "第三方登陆", tags = { "第三方登陆"})
    @Controller
    @RequestMapping("/api/v1/oauth")
    public class Oauth2LoginController { 
     
        @Autowired
        private AuthRequestService authRequestService;
     
        @ApiOperation(value = "登陆接口", notes = "登陆接口")
        @ApiImplicitParams({ @ApiImplicitParam(name = "oauthSysCode", value = "第三方系统syscode", required = true)})
        @GetMapping("/login")
        public String oauthLogin(@RequestParam("oauthSysCode") String oauthSysCode) { 
            // 根据code ，获取对应第三方系统的 AuthRequest
            AuthRequest authRequest = authRequestService.getAuthRequest(oauthSysCode);
            // 重定向认证地址
            return "redirect:" + authRequest.authorize(AuthStateUtils.createState());
        }
     
    }

#### service 层 ####

这里就是通用第三方登陆，根据syscode，构造对应平台请求。

代码参考：[AuthRequestServiceImpl.java][]

@Service
    public class AuthRequestServiceImpl implements AuthRequestService { 
     
        // 读取第三方登陆配置的实体类
        @Autowired
        private AuthRequestConfigEntity authRequestConfigEntity;
     
        @SneakyThrows
        @Override
        public AuthRequest getAuthRequest(String sys) { 
            AuthRequest authRequest = null;
            List<AuthRequestConfigEntity.AuthRequestInfo> othersys = authRequestConfigEntity.getOthersys();
            // 如果配置多个相同名称的 第三方系统，仅获取第一个配置信息
            Optional<AuthRequestConfigEntity.AuthRequestInfo> info = othersys.stream().
                    filter(authRequestInfo -> authRequestInfo.getName().equalsIgnoreCase(sys))
                    .findFirst();
            AuthRequestConfigEntity.AuthRequestInfo authRequestInfo = info.orElseThrow(() -> new RrException("不存在" + sys + "该系统的第三方登陆配置，请在yml文件中加入该系统的配置", RspCodeEnum.ERROR.getCode()));
            // 构造 AuthConfig
            AuthConfig config = AuthConfig.builder()
                    .clientId(authRequestInfo.getClientId())
                    .clientSecret(authRequestInfo.getClientSecret())
                    .redirectUri(authRequestInfo.getRedirectUri())
                    .build();
            // 反射，使用有参的构造方法，创建对象
            Class aClass = Oauth2LoginConstant.sysMappingClazz.get(sys);
            Constructor constructor = aClass.getConstructor(AuthConfig.class);
            Object obj = constructor.newInstance(config);
            if (obj instanceof AuthRequest) { 
                authRequest = (AuthRequest) obj;
            }
            return authRequest;
        }
    }

再引入一个常量类, syscode 匹配 对应平台的请求类，就是通过Map 来实现的。还有一种更加简单彻底的做法，全部有配置文件控制，可以发挥下思路，也是同样的道理。

/** * <h1>第三方登陆的全局静态变量</h1> * * @author gengzi * @date 2020年11月28日18:15:35 */
    public class Oauth2LoginConstant { 
     
        // TODO 懒得写了，有需要增加的第三方系统，增加属性配置就可以了
        public static final String SYS_GITHUB = "github";
        public static final String SYS_GITEE = "gitee";
     
        // 映射的class
        public static HashMap<String, Class> sysMappingClazz = new HashMap<>();
     
        // 允许第三方登陆的系统
        public static final String SYS_SOURCE[] = { Oauth2LoginConstant.SYS_GITHUB, Oauth2LoginConstant.SYS_GITEE};
     
        static { 
            sysMappingClazz.putIfAbsent(SYS_GITHUB, AuthGithubRequest.class);
            sysMappingClazz.putIfAbsent(SYS_GITEE, AuthGiteeRequest.class);
        }
     
     
    }

#### 核心配置 ####

[application.yml][]

**如果你还需要增加其他第三方登陆，继续追加配置即可。**

oauth2:
      othersys:
        - name: github
          client_id: # 客户端身份标识符（应用id），一般在申请完Oauth应用后，由第三方平台颁发，唯一
          client_secret: #配置 客户端密钥，一般在申请完Oauth应用后，由第三方平台颁发
          redirectUri: http://localhost:8081/api/v1/oauth/callback/github # 回调地址
        - name: gitee
          client_id: # 客户端身份标识符（应用id），一般在申请完Oauth应用后，由第三方平台颁发，唯一
          client_secret: #配置 客户端密钥，一般在申请完Oauth应用后，由第三方平台颁发
          redirectUri: http://localhost:8081/api/v1/oauth/callback/gitee # 回调地址

可以参数： [配置转对象][Link 1]

配置对象：将配置转换为对象实体，方便我们使用。

代码参考：[AuthRequestConfigEntity.java][]

@Configuration
    @ConfigurationProperties(prefix = "oauth2")
    @Data
    @AllArgsConstructor
    @NoArgsConstructor
    public class AuthRequestConfigEntity<T> implements Serializable { 
     
        // 所有的第三方登陆的客户端信息
        private List<AuthRequestInfo> othersys = new ArrayList<>();
     
        /** * 具体信息 */
        @Data
        @AllArgsConstructor
        @NoArgsConstructor
        public static class AuthRequestInfo { 
            // 第三方系统名称
            private String name;
            // 客户端id
            private String clientId;
            // 客户端密钥
            private String clientSecret;
            // 回调地址
            private String redirectUri;
        }
     
    }

上述步骤，仅仅到了第三方授权页面。（图示第二个）

#### 通用第三方登陆配置 ####

对于如果需要增加其他第三方平台登陆支持：

只需要增加 application.yml 中的oauth2的配置和常量类 Oauth2LoginConstant 中的，系统code 与认证请求类的匹配。

### 本系统的授权认证部分 ###

当用户点击“同意授权”，第三方平台就开始回调之前配置的本系统的回调地址，也就要进入认证登陆流程了。

### 认证流程一：已经绑定现有用户流程 ###

#### OtherSysOauth2LoginFilter ####

代码参考： [OtherSysOauth2LoginFilter.java][]

只粘核心代码，这里上述中的 AuthRequestServiceImpl 用来返回对应平台的，认证请求类。

public class OtherSysOauth2LoginFilter extends AbstractAuthenticationProcessingFilter { 
     
        // 拦截路径，触发该filter 的执行
        private static final String REDIRECTURI = "/api/v1/oauth/callback/**";
     
        /** * 初始化拦截路径 */
        public OtherSysOauth2LoginFilter() { 
            super(new AntPathRequestMatcher(REDIRECTURI));
        }
     
        // 预验证方法 
        public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response) throws AuthenticationException, IOException, ServletException { 
            OtherSysOauth2LoginAuthenticationToken token = null;
            // 解析地址，获得第三方平台syscode
            String path = request.getServletPath();
            String[] sysArr = path.split("/api/v1/oauth/callback/");
            String sys = sysArr[sysArr.length - 1];
            // 判断当前系统是否支持该平台登陆
            boolean contains = Arrays.asList(Oauth2LoginConstant.SYS_SOURCE).contains(sys);
            if (!contains) { 
                throw new AuthenticationServiceException(
                        "暂不支持此系统登录（This system login is not currently supported）");
            }
            // 构造AuthRequest
            AuthRequest authRequest = this.getAuthRequest(sys);
            if (authRequest == null) { 
                throw new AuthenticationServiceException(
                        "暂不支持此系统登录（This system login is not currently supported）");
            }
            // 去第三方平台获取用户信息
            AuthResponse<AuthUser> authResponse = authRequest.login(this.getCallback(request));
            if (authResponse.ok()) { 
                // 获取第三方登陆信息成功
                AuthUser data = authResponse.getData();
                // 用户id 一般是唯一的。建议通过uuid + source的方式唯一确定一个用户，这样可以解决用户身份归属的问题。
                String id = data.getUuid();
                // 根据当前系统和uuid，查询数据库，获取绑定本系统的用户信息
                OtherSysUser otherSysUser = this.getOtherUsersService().getOtherSysUserByUUIDAndScope(sys, id);
                if (otherSysUser == null) { 
                    // 未绑定过，第一次使用这个第三方平台登陆
                    String uuid = UUID.randomUUID().toString();
                    // 缓存一下第三方平台的用户信息，方便后续使用
                    redisUtil.set(Oauth2LoginRedisKeysConstant.OTHER_SYS_USER_INFO + uuid, data, 300);
                    // 跳转到绑定页面
                    response.sendRedirect("/oauthlogin.html?token=" + uuid + "&scope=" + sys);
                    return null;
                } else { 
                    // 存在绑定用户信息，说明不是第一次使用这个第三方平台登陆，执行认证流程
                    ReturnData returnData = this.getUsersService().loadUserByUsername(otherSysUser.getUsername());
                     // 这里直接使用了 user 的全部信息，设置到了 principal 主体中，方便使用
                    token = new OtherSysOauth2LoginAuthenticationToken(returnData.getInfo());
                }
            }
            // 设置额外参数
            this.setDetails(request, token);
            // 去认证
            return this.getAuthenticationManager().authenticate(token);
        } 
     
     
       }

#### OtherSysOauth2LoginAuthenticationToken ####

这里要注意还没有进入认证时， setAuthenticated(false); 要设置为false。

认证完毕后，如果认证成功，再设置为 true。super.setAuthenticated(true); // must use super, as we override

代码参考：[OtherSysOauth2LoginAuthenticationToken.java][]

public class OtherSysOauth2LoginAuthenticationToken extends AbstractAuthenticationToken { 
     
        private final Object principal;
        private Object credentials;
     
     
        public OtherSysOauth2LoginAuthenticationToken(Object principal, Object credentials) { 
            super(null);
            this.principal = principal;
            this.credentials = credentials;
            setAuthenticated(false);
        }
     
        public OtherSysOauth2LoginAuthenticationToken(Object authUser) { 
            super(null);
            this.principal = authUser;
            setAuthenticated(false);
        }
     
        /** * 使用提供的权限数组创建令牌。 * * @param authorities 权限集合 * @param principal 用户名 * @param credentials 密码 */
        public OtherSysOauth2LoginAuthenticationToken(Collection<? extends GrantedAuthority> authorities, Object principal, Object credentials) { 
            super(authorities);
            this.principal = principal;
            this.credentials = credentials;
            super.setAuthenticated(true); // must use super, as we override
     
        }
     
     
        // 密码
        @Override
        public Object getCredentials() { 
            return this.credentials;
        }
     
     
        // 用户名
        @Override
        public Object getPrincipal() { 
            return this.principal;
        }
     
    }

#### OtherSysOauth2LoginProvider ####

代码参考：[OtherSysOauth2LoginProvider.java ][OtherSysOauth2LoginProvider.java]

/** * <h1>第三方登陆的提供者</h1> * <p> * 参考： {@link AbstractUserDetailsAuthenticationProvider} 实现 * 一些方法直接默认使用。 * 可以将AbstractUserDetailsAuthenticationProvider 整个类拷贝后，仅修改一些参数和方法 * <p> * 作用： * 判断token类型是否一致，不是OtherSysOauth2LoginAuthenticationToken ，不执行认证流程。这样将表单登陆，绑定用户登陆，还是第三方直接登录（已经绑定） * 认证过程区分开。 * <p> * 校验基本的信息后，就赋予认证成功的标识。 * <p> * <p> * 注意： 该Provider 并没有提供对密码的校验。因为第三方登陆，不会输入本系统用户名和密码。只要数据库表能找到该用户，默认该用户已经认证成功了。 * 如果需要真正执行密码校验的操作，请参阅{@link DaoAuthenticationProvider} 的 additionalAuthenticationChecks 方法实现。 * * @author gengzi * @date 2020年12月5日12:41:07 */
    @Slf4j
    public class OtherSysOauth2LoginProvider implements AuthenticationProvider, InitializingBean, MessageSourceAware { 
     
        protected MessageSourceAccessor messages = SpringSecurityMessageSource.getAccessor();
        private UserCache userCache = new NullUserCache();
        private boolean forcePrincipalAsString = false;
        protected boolean hideUserNotFoundExceptions = true;
        private UserDetailsChecker preAuthenticationChecks = new DefaultPreAuthenticationChecks();
        private UserDetailsChecker postAuthenticationChecks = new DefaultPostAuthenticationChecks();
        private GrantedAuthoritiesMapper authoritiesMapper = new NullAuthoritiesMapper();
        // 用户详情服务，用于查询用户详情信息
        private OtherSysOauth2LoginUserDetailsServiceImpl userDetailsService;
     
        @Override
        public void afterPropertiesSet() throws Exception { 
        }
     
        @Override
        public void setMessageSource(MessageSource messageSource) { 
            this.messages = new MessageSourceAccessor(messageSource);
        }
     
        /** * 认证方法 * * @param authentication {@link OtherSysOauth2LoginAuthenticationToken} token * @return * @throws AuthenticationException */
        @Override
        public Authentication authenticate(Authentication authentication) throws AuthenticationException { 
            // 判断认证方式是否属于 OtherSysOauth2LoginAuthenticationToken
            Assert.isInstanceOf(OtherSysOauth2LoginAuthenticationToken.class, authentication, "仅支持OtherSysOauth2LoginAuthenticationToken类型的认证");
            boolean cacheWasUsed = true;
            // 根据信息获取 UserDetails 的信息
            UserDetail principal = (UserDetail) authentication.getPrincipal();
            String id = principal.getUsername();
            UserDetails user = this.userCache.getUserFromCache(String.valueOf(id));
            if (user == null) { 
                cacheWasUsed = false;
                user = retrieveUser(String.valueOf(id),
                        (OtherSysOauth2LoginAuthenticationToken) authentication);
            }
            try { 
                preAuthenticationChecks.check(user);
            } catch (AuthenticationException exception) { 
                throw exception;
            }
            postAuthenticationChecks.check(user);
            if (!cacheWasUsed) { 
                this.userCache.putUserInCache(user);
            }
            Object principalToReturn = user;
            if (forcePrincipalAsString) { 
                principalToReturn = user.getUsername();
            }
            return createSuccessAuthentication(principalToReturn, authentication, user);
        }
     
        /** * 创建成功认证 * * @param principal 主体 * @param authentication token * @param user 用户详情 * @return */
        protected Authentication createSuccessAuthentication(Object principal,
                                                             Authentication authentication, UserDetails user) { 
            // Ensure we return the original credentials the user supplied,
            // so subsequent attempts are successful even with encoded passwords.
            // Also ensure we return the original getDetails(), so that future
            // authentication events after cache expiry contain the details
            OtherSysOauth2LoginAuthenticationToken result = new OtherSysOauth2LoginAuthenticationToken(
                    authoritiesMapper.mapAuthorities(user.getAuthorities()),
                    principal, authentication.getCredentials());
            result.setDetails(authentication.getDetails());
            return result;
        }
     
        /** * 检索用户详情 * <p> * 从数据库中查询 * * @param username 用户名 * @param authentication * @return * @throws AuthenticationException */
        protected UserDetails retrieveUser(String username, OtherSysOauth2LoginAuthenticationToken authentication) throws AuthenticationException { 
            try { 
                UserDetails loadedUser = this.getUserDetailsService().loadUserByUsername(username);
                if (loadedUser == null) { 
                    throw new InternalAuthenticationServiceException(
                            "UserDetailsService returned null, which is an interface contract violation");
                }
                return loadedUser;
            } catch (InternalAuthenticationServiceException ex) { 
                throw ex;
            } catch (Exception ex) { 
                throw new InternalAuthenticationServiceException(ex.getMessage(), ex);
            }
        }
     
        public void setUserDetailsService(OtherSysOauth2LoginUserDetailsServiceImpl userDetailsService) { 
            this.userDetailsService = userDetailsService;
        }
     
        protected OtherSysOauth2LoginUserDetailsServiceImpl getUserDetailsService() { 
            return userDetailsService;
        }
     
        @Override
        public boolean supports(Class<?> authentication) { 
            return (OtherSysOauth2LoginAuthenticationToken.class
                    .isAssignableFrom(authentication));
        }
     
        /** * 默认的预身份验证检查 */
        private class DefaultPreAuthenticationChecks implements UserDetailsChecker { 
            @Override
            public void check(UserDetails user) { 
                if (!user.isAccountNonLocked()) { 
                    log.debug("User account is locked");
     
                    throw new LockedException(messages.getMessage(
                            "AbstractUserDetailsAuthenticationProvider.locked",
                            "User account is locked"));
                }
     
                if (!user.isEnabled()) { 
                    log.debug("User account is disabled");
     
                    throw new DisabledException(messages.getMessage(
                            "AbstractUserDetailsAuthenticationProvider.disabled",
                            "User is disabled"));
                }
     
                if (!user.isAccountNonExpired()) { 
                    log.debug("User account is expired");
     
                    throw new AccountExpiredException(messages.getMessage(
                            "AbstractUserDetailsAuthenticationProvider.expired",
                            "User account has expired"));
                }
            }
        }
     
        private class DefaultPostAuthenticationChecks implements UserDetailsChecker { 
            @Override
            public void check(UserDetails user) { 
                if (!user.isCredentialsNonExpired()) { 
                    log.debug("User account credentials have expired");
     
                    throw new CredentialsExpiredException(messages.getMessage(
                            "AbstractUserDetailsAuthenticationProvider.credentialsExpired",
                            "User credentials have expired"));
                }
            }
        }
    }

#### OtherSysOauth2LoginUserDetailsServiceImpl ####

代码参考：[**OtherSysOauth2LoginUserDetailsServiceImpl.java** ][OtherSysOauth2LoginUserDetailsServiceImpl.java_]

其实跟之前实现的 UserDetailsService 没啥差别。

/** * <h1>用户详细服务impl</h1> * <p> * 用于返回根据用户名返回用户详细信息，以便于供 security 使用 * * @author gengzi * @date 2020年11月3日15:24:43 */
    @Service("otherSysOauth2LoginUserDetailsServiceImpl")
    public class OtherSysOauth2LoginUserDetailsServiceImpl { 
     
        @Autowired
        private UsersService usersService;
     
        public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException { 
            ReturnData result = usersService.loadUserByUsername(username);
            if (RspCodeEnum.NOTOKEN.getCode() == result.getStatus()) { 
                throw new RrException(RspCodeEnum.ACCOUNT_NOT_EXIST.getDesc());
            }
            UserDetail userDetail = (UserDetail) result.getInfo();
            if (userDetail == null) { 
                throw new RrException(RspCodeEnum.ACCOUNT_NOT_EXIST.getDesc());
            }
            //账号不可用
            if (userDetail.getStatus() == UserStatusEnum.DISABLE.getValue()) { 
                userDetail.setEnabled(false);
            }
            return userDetail;
        }
    }

#### 认证成功事件或者失败事件 ####

当认证完成后，就会执行默认或者自定义的认证成功事件或者失败事件。

可以根据业务需求修改，这里都返回的是 json 的数据

失败：

/** * <h1>用户认证失败处理器</h1> * 响应失败的json 信息 * * * @author gengzi * @date 2020年11月24日13:23:40 */
    @Component
    public class UserAuthenticationFailureHandler extends SimpleUrlAuthenticationFailureHandler { 
     
        @SneakyThrows
        @Override
        public void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response, AuthenticationException e) { 
            response.setContentType("application/json;charset=UTF-8");
            ReturnData ret = ReturnData.newInstance();
            ret.setFailure(e.getMessage());
            response.getWriter().write(JSON.toJSONString(ret));
        }
    }

成功：

/** * <h1>用户认证成功处理器</h1> * 从session中获取，响应脱敏的用户信息 * * @author gengzi * @date 2020年11月24日13:23:40 */
    @Component
    @Slf4j
    public class UserAuthenticationSuccessHandler extends SimpleUrlAuthenticationSuccessHandler { 
     
        @SneakyThrows
        @Override
        public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) { 
            response.setContentType("application/json;charset=UTF-8");
            ReturnData ret = ReturnData.newInstance();
            ret.setSuccess();
            ret.setInfo(authentication);
            response.getWriter().write(JSON.toJSONString(ret));
        }
    }

### 认证流程二：没有绑定现有用户流程 ###

依然要执行 OtherSysOauth2LoginFilter ，只不过判断用户未绑定后，跳转到了绑定页面

#### 绑定用户页面 ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI4ODE3NzM5_size_16_color_FFFFFF_t_70 1]

跳转绑定用户页面

绑定页面地址："/oauthlogin.html?token=" + uuid + “&scope=” + sys

例如：http://localhost:8081/oauthlogin.html?token=3db4aa22-0aea-4604-9c6e-56fe7ffc86ce&scope=github

代码参考：[oauthlogin.html][]

<h1>绑定系统账号</h1>
        <form method="post" action="/otherlogin">
            <input type="hidden" name="scope" id="scope" value="github">
            <input type="hidden" name="token" id="token" value="">
            <input type="text" required="required" placeholder="用户名" name="username"></input>
            <input type="password" required="required" placeholder="密码" name="password"></input>
            <button class="but" type="submit">绑定并登陆账户</button>
        </form>
     
    <script> $(function () { // 获取路径中的参数 function getUrlParms(name) { var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)"); var r = window.location.search.substr(1).match(reg); if (r != null) return unescape(r[2]); return null; } var token = getUrlParms("token"); var scope = getUrlParms("scope"); $("#token").val(token); $("#scope").val(scope); }); </script>

#### UserBindFilter ####

代码参考：[UserBindFilter.java ][UserBindFilter.java]

/** * <h1>用户绑定过滤器</h1> * <p> * 触发条件： 当第三方登陆用户与本系统用户绑定时，执行该过滤器 * <p> * 匹配路径：/otherlogin Post 请求 * <p> * 根据绑定用户入参，将第三方用户信息入库，与本系统用户关联 * <p> * 参见：UsernamePasswordAuthenticationFilter 实现 * <p> * 使用示例： * * UserBindFilter userBindFilter = new UserBindFilter(); * userBindFilter.setAuthenticationManager(builder.getSharedObject(AuthenticationManager.class)); * userBindFilter.setRedisUtil(redisUtil); * userBindFilter.setOtherSysUserDao(otherSysUserDao); * userBindFilter.setSysUsersDao(sysUsersDao); * // 再加入到 spring security 的过滤器链中 * httpSecurity.addFilterBefore(userBindFilter, UsernamePasswordAuthenticationFilter.class); * * @author gengzi * @date 2020年11月24日10:45:17 */
    public class UserBindFilter extends
            AbstractAuthenticationProcessingFilter { 
        // ~ Static fields/initializers
        // =====================================================================================
     
        public static final String SPRING_SECURITY_FORM_USERNAME_KEY = "username";
        public static final String SPRING_SECURITY_FORM_PASSWORD_KEY = "password";
        public static final String SPRING_SECURITY_FORM_TOKEN_KEY = "token";
        public static final String SPRING_SECURITY_FORM_SCOPE_KEY = "scope";
     
        private String usernameParameter = SPRING_SECURITY_FORM_USERNAME_KEY;
        private String passwordParameter = SPRING_SECURITY_FORM_PASSWORD_KEY;
        private String tokenParameter = SPRING_SECURITY_FORM_TOKEN_KEY;
        private String scopeParameter = SPRING_SECURITY_FORM_SCOPE_KEY;
        private boolean postOnly = true;
     
        private RedisUtil redisUtil;
     
        private OtherUsersService otherUsersService;
     
        private OtherSysUserDao otherSysUserDao;
     
        private SysUsersDao sysUsersDao;
     
        public SysUsersDao getSysUsersDao() { 
            return sysUsersDao;
        }
     
        public void setSysUsersDao(SysUsersDao sysUsersDao) { 
            this.sysUsersDao = sysUsersDao;
        }
     
        public OtherSysUserDao getOtherSysUserDao() { 
            return otherSysUserDao;
        }
     
        public void setOtherSysUserDao(OtherSysUserDao otherSysUserDao) { 
            this.otherSysUserDao = otherSysUserDao;
        }
     
        public OtherUsersService getOtherUsersService() { 
            return otherUsersService;
        }
     
        public void setOtherUsersService(OtherUsersService otherUsersService) { 
            this.otherUsersService = otherUsersService;
        }
     
        public RedisUtil getRedisUtil() { 
            return redisUtil;
        }
     
        public void setRedisUtil(RedisUtil redisUtil) { 
            this.redisUtil = redisUtil;
        }
        // ~ Constructors
        // ===================================================================================================
     
        public UserBindFilter() { 
            super(new AntPathRequestMatcher("/otherlogin", "POST"));
        }
     
        // ~ Methods
        // ========================================================================================================
     
        @Override
        public Authentication attemptAuthentication(HttpServletRequest request,
                                                    HttpServletResponse response) throws AuthenticationException { 
            // 校验请求方式
            if (postOnly && !request.getMethod().equals("POST")) { 
                throw new AuthenticationServiceException(
                        "Authentication method not supported: " + request.getMethod());
            }
            // 获取请求的入参
            String username = obtainUsername(request);
            String password = obtainPassword(request);
            String token = obtainToken(request);
            String sys = obtainScope(request);
     
            // 参数校验部分
            if (username == null) { 
                username = "";
            }
     
            if (password == null) { 
                password = "";
            }
     
            if (token == null) { 
                throw new AuthenticationServiceException(
                        "token 参数缺失（The token parameter is missing）");
            }
            // 从redis 缓存中获取第三方用户信息
            AuthUser authUser = (AuthUser) this.getRedisUtil().get(Oauth2LoginRedisKeysConstant.OTHER_SYS_USER_INFO + token);
            if (authUser == null) { 
                throw new AuthenticationServiceException(
                        "绑定超时，请重新登陆绑定（Binding timed out, please log in again to bind）");
            }
     
            SysUsers sysUser = this.getSysUsersDao().findByUsername(username);
     
            if (sysUser == null) { 
                throw new AuthenticationServiceException(
                        "输入用户名不存在（Enter username does not exist）");
            }
     
            // 将用户信息构造为 OtherSysUser 对象
            String uuid = authUser.getUuid();
            OtherSysUser otherSysUser = new OtherSysUser();
            otherSysUser.setScope(sys);
            otherSysUser.setUuid(uuid);
            otherSysUser.setCreateTime(new Date());
            otherSysUser.setUserId(sysUser.getId());
            otherSysUser.setUsername(sysUser.getUsername());
     
            username = username.trim();
            // 构造token
            BindAuthenticationToken bindAuthenticationToken = new BindAuthenticationToken(username, password,otherSysUser);
            // 设置额外数据
            setDetails(request, bindAuthenticationToken);
            // 移除缓存的用户数据，以防用户下次继续使用
            this.getRedisUtil().del(Oauth2LoginRedisKeysConstant.OTHER_SYS_USER_INFO + token);
            // 执行认证
            return this.getAuthenticationManager().authenticate(bindAuthenticationToken);
        }
     
        // 获取密码
        @Nullable
        protected String obtainPassword(HttpServletRequest request) { 
            return request.getParameter(passwordParameter);
        }
     
        // 获取用户名
        @Nullable
        protected String obtainUsername(HttpServletRequest request) { 
            return request.getParameter(usernameParameter);
        }
     
        // 获取token
        @Nullable
        protected String obtainToken(HttpServletRequest request) { 
            return request.getParameter(tokenParameter);
        }
     
        // 获取scope
        @Nullable
        protected String obtainScope(HttpServletRequest request) { 
            return request.getParameter(scopeParameter);
        }
     
        protected void setDetails(HttpServletRequest request,
                                  BindAuthenticationToken authRequest) { 
            authRequest.setDetails(authenticationDetailsSource.buildDetails(request));
        }
     
        public void setUsernameParameter(String usernameParameter) { 
            Assert.hasText(usernameParameter, "Username parameter must not be empty or null");
            this.usernameParameter = usernameParameter;
        }
     
        public void setPasswordParameter(String passwordParameter) { 
            Assert.hasText(passwordParameter, "Password parameter must not be empty or null");
            this.passwordParameter = passwordParameter;
        }
     
        public void setPostOnly(boolean postOnly) { 
            this.postOnly = postOnly;
        }
     
        public final String getUsernameParameter() { 
            return usernameParameter;
        }
     
        public final String getPasswordParameter() { 
            return passwordParameter;
        }
    }

#### BindAuthenticationToken ####

代码参考：[BindAuthenticationToken.java ][BindAuthenticationToken.java]

/** * <h1>绑定登陆认证令牌</h1> * <p> * 参考： UsernamePasswordAuthenticationToken 实现 * <p> * 将登录信息构造一个成认证令牌，传递数据 * * @author gengzi * @date 2020年12月5日10:49:24 */
    public class BindAuthenticationToken extends AbstractAuthenticationToken { 
     
        private final Object principal;
        private Object credentials;
        // 绑定信息
        private Object bindInfo;
     
        public Object getBindInfo() { 
            return bindInfo;
        }
     
        public void setBindInfo(Object bindInfo) { 
            this.bindInfo = bindInfo;
        }
     
        public BindAuthenticationToken(Object principal, Object credentials) { 
            super(null);
            this.principal = principal;
            this.credentials = credentials;
            setAuthenticated(false);
        }
     
        public BindAuthenticationToken(Object principal, Object credentials, Object bindInfo) { 
            super(null);
            this.principal = principal;
            this.credentials = credentials;
            this.bindInfo = bindInfo;
            setAuthenticated(false);
        }
     
        public BindAuthenticationToken(Object authUser) { 
            super(null);
            this.principal = authUser;
            setAuthenticated(false);
        }
     
        /** * 使用提供的权限数组创建令牌。 * * @param authorities 权限集合 * @param principal 用户名 * @param credentials 密码 */
        public BindAuthenticationToken(Collection<? extends GrantedAuthority> authorities, Object principal, Object credentials) { 
            super(authorities);
            this.principal = principal;
            this.credentials = credentials;
            super.setAuthenticated(true); // must use super, as we override
     
        }
     
        // 密码
        @Override
        public Object getCredentials() { 
            return this.credentials;
        }
     
     
        // 用户名 或者 主体
        @Override
        public Object getPrincipal() { 
            return this.principal;
        }
     
    }

#### BindLoginProvider ####

代码参考[BindLoginProvider.java][]

关注注释部分的代码即可。其他代码都是 AbstractUserDetailsAuthenticationProvider 的

/** * <h1>绑定登陆的提供者</h1> * <p> * 参考：AbstractUserDetailsAuthenticationProvider 实现 * <p> * 作用： * 1，校验用户信息，用户名和密码是否正确 * 2，用户信息正确，再将第三方用户信息存入数据库 * * @author gengzi * @date 2020年12月5日10:55:59 */
    @Slf4j
    public class BindLoginProvider implements AuthenticationProvider, InitializingBean, MessageSourceAware { 
     
        protected final Log logger = LogFactory.getLog(getClass());
     
        // ~ Instance fields
        // ================================================================================================
     
        protected MessageSourceAccessor messages = SpringSecurityMessageSource.getAccessor();
        private UserCache userCache = new NullUserCache();
        private boolean forcePrincipalAsString = false;
        protected boolean hideUserNotFoundExceptions = true;
        private UserDetailsChecker preAuthenticationChecks = new BindLoginProvider.DefaultPreAuthenticationChecks();
        private UserDetailsChecker postAuthenticationChecks = new BindLoginProvider.DefaultPostAuthenticationChecks();
        private GrantedAuthoritiesMapper authoritiesMapper = new NullAuthoritiesMapper();
        // 用户详情服务
        private UserDetailsServiceImpl userDetailsService;
        // 保存第三方用户信息的dao
        private OtherSysUserDao otherSysUserDao;
        // 密码encoder
        private PasswordEncoder passwordEncoder;
     
        public PasswordEncoder getPasswordEncoder() { 
            return passwordEncoder;
        }
     
        public void setPasswordEncoder(PasswordEncoder passwordEncoder) { 
            this.passwordEncoder = passwordEncoder;
        }
     
        public OtherSysUserDao getOtherSysUserDao() { 
            return otherSysUserDao;
        }
     
        public void setOtherSysUserDao(OtherSysUserDao otherSysUserDao) { 
            this.otherSysUserDao = otherSysUserDao;
        }
     
     
        public UserDetailsServiceImpl getUserDetailsService() { 
            return userDetailsService;
        }
     
        public void setUserDetailsService(UserDetailsServiceImpl userDetailsService) { 
            this.userDetailsService = userDetailsService;
        }
        // ~ Methods
        // ========================================================================================================
     
    // protected abstract void additionalAuthenticationChecks(UserDetails userDetails,
    // BindAuthenticationToken authentication)
    // throws AuthenticationException;
     
        @Override
        public final void afterPropertiesSet() throws Exception { 
            Assert.notNull(this.userCache, "A user cache must be set");
            Assert.notNull(this.messages, "A message source must be set");
            doAfterPropertiesSet();
        }
     
        @Override
        public Authentication authenticate(Authentication authentication)
                throws AuthenticationException { 
            Assert.isInstanceOf(BindAuthenticationToken.class, authentication,
                    () -> messages.getMessage(
                            "AbstractUserDetailsAuthenticationProvider.onlySupports",
                            "Only BindAuthenticationToken is supported"));
     
            // Determine username
            String username = (authentication.getPrincipal() == null) ? "NONE_PROVIDED"
                    : authentication.getName();
     
            boolean cacheWasUsed = true;
            UserDetails user = this.userCache.getUserFromCache(username);
     
            if (user == null) { 
                cacheWasUsed = false;
     
                try { 
                    user = retrieveUser(username,
                            (BindAuthenticationToken) authentication);
                } catch (UsernameNotFoundException notFound) { 
                    logger.debug("User '" + username + "' not found");
     
                    if (hideUserNotFoundExceptions) { 
                        throw new BadCredentialsException(messages.getMessage(
                                "AbstractUserDetailsAuthenticationProvider.badCredentials",
                                "Bad credentials"));
                    } else { 
                        throw notFound;
                    }
                }
     
                Assert.notNull(user,
                        "retrieveUser returned null - a violation of the interface contract");
            }
     
            try { 
                preAuthenticationChecks.check(user);
                additionalAuthenticationChecks(user,
                        (BindAuthenticationToken) authentication);
            } catch (AuthenticationException exception) { 
                if (cacheWasUsed) { 
                    cacheWasUsed = false;
                    user = retrieveUser(username,
                            (BindAuthenticationToken) authentication);
                    preAuthenticationChecks.check(user);
                    additionalAuthenticationChecks(user,
                            (BindAuthenticationToken) authentication);
                } else { 
                    throw exception;
                }
            }
     
            postAuthenticationChecks.check(user);
     
            if (!cacheWasUsed) { 
                this.userCache.putUserInCache(user);
            }
     
            Object principalToReturn = user;
     
            if (forcePrincipalAsString) { 
                principalToReturn = user.getUsername();
            }
     
            // 增加保存第三方用户信息
            BindAuthenticationToken bind = (BindAuthenticationToken) authentication;
            OtherSysUser bindInfo = (OtherSysUser) bind.getBindInfo();
            this.getOtherSysUserDao().save(bindInfo);
     
            return createSuccessAuthentication(principalToReturn, authentication, user);
        }
     
     
        protected Authentication createSuccessAuthentication(Object principal,
                                                             Authentication authentication, UserDetails user) { 
            BindAuthenticationToken result = new BindAuthenticationToken(
                    principal, authentication.getCredentials(),
                    authoritiesMapper.mapAuthorities(user.getAuthorities()));
            result.setDetails(authentication.getDetails());
     
            return result;
        }
     
        protected void doAfterPropertiesSet() throws Exception { 
        }
     
        public UserCache getUserCache() { 
            return userCache;
        }
     
        public boolean isForcePrincipalAsString() { 
            return forcePrincipalAsString;
        }
     
        public boolean isHideUserNotFoundExceptions() { 
            return hideUserNotFoundExceptions;
        }
     
     
        protected UserDetails retrieveUser(String username, BindAuthenticationToken authentication) throws AuthenticationException { 
            try { 
                UserDetails loadedUser = this.getUserDetailsService().loadUserByUsername(username);
                if (loadedUser == null) { 
                    throw new InternalAuthenticationServiceException(
                            "UserDetailsService returned null, which is an interface contract violation");
                }
                return loadedUser;
            } catch (InternalAuthenticationServiceException ex) { 
                throw ex;
            } catch (Exception ex) { 
                throw new InternalAuthenticationServiceException(ex.getMessage(), ex);
            }
        }
     
        public void setForcePrincipalAsString(boolean forcePrincipalAsString) { 
            this.forcePrincipalAsString = forcePrincipalAsString;
        }
     
     
        public void setHideUserNotFoundExceptions(boolean hideUserNotFoundExceptions) { 
            this.hideUserNotFoundExceptions = hideUserNotFoundExceptions;
        }
     
        @Override
        public void setMessageSource(MessageSource messageSource) { 
            this.messages = new MessageSourceAccessor(messageSource);
        }
     
        public void setUserCache(UserCache userCache) { 
            this.userCache = userCache;
        }
     
        @Override
        public boolean supports(Class<?> authentication) { 
            return (BindAuthenticationToken.class
                    .isAssignableFrom(authentication));
        }
     
        protected UserDetailsChecker getPreAuthenticationChecks() { 
            return preAuthenticationChecks;
        }
     
     
        public void setPreAuthenticationChecks(UserDetailsChecker preAuthenticationChecks) { 
            this.preAuthenticationChecks = preAuthenticationChecks;
        }
     
        protected UserDetailsChecker getPostAuthenticationChecks() { 
            return postAuthenticationChecks;
        }
     
        public void setPostAuthenticationChecks(UserDetailsChecker postAuthenticationChecks) { 
            this.postAuthenticationChecks = postAuthenticationChecks;
        }
     
        public void setAuthoritiesMapper(GrantedAuthoritiesMapper authoritiesMapper) { 
            this.authoritiesMapper = authoritiesMapper;
        }
     
        private class DefaultPreAuthenticationChecks implements UserDetailsChecker { 
            @Override
            public void check(UserDetails user) { 
                if (!user.isAccountNonLocked()) { 
                    logger.debug("User account is locked");
     
                    throw new LockedException(messages.getMessage(
                            "AbstractUserDetailsAuthenticationProvider.locked",
                            "User account is locked"));
                }
     
                if (!user.isEnabled()) { 
                    logger.debug("User account is disabled");
     
                    throw new DisabledException(messages.getMessage(
                            "AbstractUserDetailsAuthenticationProvider.disabled",
                            "User is disabled"));
                }
     
                if (!user.isAccountNonExpired()) { 
                    logger.debug("User account is expired");
     
                    throw new AccountExpiredException(messages.getMessage(
                            "AbstractUserDetailsAuthenticationProvider.expired",
                            "User account has expired"));
                }
            }
        }
     
        private class DefaultPostAuthenticationChecks implements UserDetailsChecker { 
            @Override
            public void check(UserDetails user) { 
                if (!user.isCredentialsNonExpired()) { 
                    logger.debug("User account credentials have expired");
     
                    throw new CredentialsExpiredException(messages.getMessage(
                            "AbstractUserDetailsAuthenticationProvider.credentialsExpired",
                            "User credentials have expired"));
                }
            }
        }
     
     
        /** * 密码验证部分 * <p> * 根据密码的加密策略，对比用户输入密码和系统中存储的密码是否一致 * 如果不一致，将抛出 BadCredentialsException * * @param userDetails * @param authentication * @throws AuthenticationException */
        protected void additionalAuthenticationChecks(UserDetails userDetails,
                                                      BindAuthenticationToken authentication)
                throws AuthenticationException { 
            if (authentication.getCredentials() == null) { 
                logger.debug("Authentication failed: no credentials provided");
     
                throw new BadCredentialsException(messages.getMessage(
                        "AbstractUserDetailsAuthenticationProvider.badCredentials",
                        "Bad credentials"));
            }
     
            String presentedPassword = authentication.getCredentials().toString();
     
            if (!passwordEncoder.matches(presentedPassword, userDetails.getPassword())) { 
                logger.debug("Authentication failed: password does not match stored value");
     
                throw new BadCredentialsException(messages.getMessage(
                        "AbstractUserDetailsAuthenticationProvider.badCredentials",
                        "Bad credentials"));
            }
        }
    }

#### UserDetailsServiceImpl ####

这也是最开始实现对接 数据库的用户详情服务。

/** * <h1>用户详细服务impl</h1> * <p> * 用于返回根据用户名返回用户详细信息，以便于供 security 使用 * * @author gengzi * @date 2020年11月3日15:24:43 */
    @Service
    public class UserDetailsServiceImpl implements UserDetailsService { 
     
        @Autowired
        private UsersService usersService;
     
        @Autowired
        private PasswordEncoder passwordEncoder;
     
        @Override
        public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException { 
            ReturnData result = usersService.loadUserByUsername(username);
            if (RspCodeEnum.NOTOKEN.getCode() == result.getStatus()) { 
                throw new RrException(RspCodeEnum.ACCOUNT_NOT_EXIST.getDesc());
            }
            UserDetail userDetail = (UserDetail) result.getInfo();
            if (userDetail == null) { 
                throw new RrException(RspCodeEnum.ACCOUNT_NOT_EXIST.getDesc());
            }
            //账号不可用
            if (userDetail.getStatus() == UserStatusEnum.DISABLE.getValue()) { 
                userDetail.setEnabled(false);
            }
            return userDetail;
        }
    }

### 核心配置 ###

上述的代码写好后，都要加入Spring Security 的核心配置中。具体代码如下：

主要是把需要的类，都set进去。

代码参考：[OtherSysOauth2LoginAuthenticationSecurityConfig][]

/** * <h1>第三方登陆的认证配置</h1> * <p> * 主要配置： * 1，加载第三方登陆的认证过滤器 ，主要提供路径拦截和基础判断 * 设置认证管理器 * 设置用户服务类 * <p> * 2，加载登陆提供者 * 设置用户详细服务实现 * 设置登陆成功事件 * 设置登陆失败事件 * <p> * 将提供提供者和过滤器加入 HttpSecurity 中，并在 UsernamePasswordAuthenticationFilter 前执行逻辑判断 * <p> * 用户过滤器配置 * * @author gengzi * @date 2020年11月24日10:52:39 */
    @Configuration
    public class OtherSysOauth2LoginAuthenticationSecurityConfig extends SecurityConfigurerAdapter<DefaultSecurityFilterChain, HttpSecurity> { 
     
        @Autowired
        private OtherSysOauth2LoginUserDetailsServiceImpl extendUserDetailsService;
        // ------------ 用户认证失败处理程序 -------------
        @Autowired
        private UserAuthenticationFailureHandler userAuthenticationFailureHandler;
     
        // ------------ 用户认证成功处理程序 -------------
        @Autowired
        private UserAuthenticationSuccessHandler userAuthenticationSuccessHandler;
     
        @Autowired
        private UsersService usersService;
     
        @Autowired
        private RedisUtil redisUtil;
     
        @Autowired
        private OtherSysUserDao otherSysUserDao;
     
        @Autowired
        private SysUsersDao sysUsersDao;
     
        @Autowired
        private OtherUsersService otherUsersService;
     
        @Autowired
        private AuthRequestService authRequestService;
     
        @Autowired
        private UserDetailsServiceImpl userDetailsService;
     
        @Autowired
        private PasswordEncoder passwordEncoder;
     
        @Override
        public void configure(HttpSecurity builder) throws Exception { 
            // 第三方登陆过滤器
            OtherSysOauth2LoginFilter filter = new OtherSysOauth2LoginFilter();
            filter.setAuthenticationManager(builder.getSharedObject(AuthenticationManager.class));
            filter.setUsersService(usersService);
            filter.setRedisUtil(redisUtil);
            filter.setOtherUsersService(otherUsersService);
            filter.setAuthenticationSuccessHandler(userAuthenticationSuccessHandler);
            filter.setAuthenticationFailureHandler(userAuthenticationFailureHandler);
            filter.setAuthRequestService(authRequestService);
            // 认证
            OtherSysOauth2LoginProvider provider = new OtherSysOauth2LoginProvider();
            provider.setUserDetailsService(extendUserDetailsService);
            builder.authenticationProvider(provider).addFilterBefore(filter, UsernamePasswordAuthenticationFilter.class);
            // 绑定用户Filter
            UserBindFilter userBindFilter = new UserBindFilter();
            userBindFilter.setAuthenticationManager(builder.getSharedObject(AuthenticationManager.class));
            userBindFilter.setRedisUtil(redisUtil);
            userBindFilter.setOtherSysUserDao(otherSysUserDao);
            userBindFilter.setSysUsersDao(sysUsersDao);
            userBindFilter.setAuthenticationFailureHandler(userAuthenticationFailureHandler);
            userBindFilter.setAuthenticationSuccessHandler(userAuthenticationSuccessHandler);
            // 认证
            BindLoginProvider bindLoginProvider = new BindLoginProvider();
            bindLoginProvider.setOtherSysUserDao(otherSysUserDao);
            bindLoginProvider.setUserDetailsService(userDetailsService);
            bindLoginProvider.setPasswordEncoder(passwordEncoder);
            builder.authenticationProvider(bindLoginProvider).addFilterBefore(userBindFilter, UsernamePasswordAuthenticationFilter.class);
        }
    }

并加入SpringSecurity 核心配置：

代码参考：[**WebSecurityConfig.java** ][WebSecurityConfig.java_]

只粘核心配置部分， 将OtherSysOauth2LoginAuthenticationSecurityConfig 加入SpringSecurity的过滤器链中

@Configuration
    // 启用web 认证
    @EnableWebSecurity
    // 启用全局的方法安全
    @EnableGlobalMethodSecurity(prePostEnabled = true)
    public class WebSecurityConfig extends WebSecurityConfigurerAdapter { 
     
        // ------------ 第三方登陆的认证安全配置 -------------
        @Autowired
        private OtherSysOauth2LoginAuthenticationSecurityConfig otherSysOauth2LoginAuthenticationSecurityConfig;
     
            protected void configure(HttpSecurity http) throws Exception { 
            // 自定义表单认证方式
                // ----------------- 关键配置 --------------------------
            http.apply(otherSysOauth2LoginAuthenticationSecurityConfig).and().
                // ----------------- 关键配置 --------------------------
                    addFilterBefore(validateCodeFilter, UsernamePasswordAuthenticationFilter.class)
                    .authorizeRequests()
                    // 放行swagger-ui相关的路径
                    .antMatchers(IgnoringUrlConstant.IGNORING_URLS).permitAll()
                    .antMatchers(IgnoringUrlConstant.IGNORING_STATIC_URLS).permitAll()
                    .antMatchers(IgnoringUrlConstant.OAUTH2_URLS).permitAll()
                    .antMatchers("/getLoginCode").permitAll()
                    .antMatchers("/codeBuildNew/**").permitAll()  // 都可以访问
                    .anyRequest().authenticated().and().formLogin().loginPage("/login.html").loginProcessingUrl("/login").permitAll().and()
                    .csrf().disable()// csrf 防止跨站脚本攻击
                    .formLogin()
                    .successHandler(userAuthenticationSuccessHandler)
                    .failureHandler(userAuthenticationFailureHandler).and()
                    .sessionManagement((sessionManagement) -> sessionManagement
                            .maximumSessions(100)
                            .sessionRegistry(sessionRegistry()));
     
        }
    }

## 综上所述 ##

第三方登陆的实现依靠于JustAuth框架还是很简单的，对接SpringSecurity需要了解认证流程执行的类。上述的实现，只是作为第三方登陆演示的一种，需要优化的地方有很多，大家对于不同的需求，再修改适配即可，理解流程才是关键。

上述代码虽然能实现功能，但是编写的类还是太多，有没有更加简化的配置呢？当然有，SpringSecurity OAuth2 框架提供了第三方登陆更加优雅的解决方式，也是一种不错的选择。

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> ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI4ODE3NzM5_size_16_color_FFFFFF_t_70_pic_center]

[JustAuth]: https://justauth.wiki/#/quickstart/explain
[SpringSecurity_-]: https://gengzi.github.io/Code-animal/#/./docs/SpringSecurity/SpringSecurity%E5%AE%9E%E6%88%98%28%E4%BA%94%29-%E8%AE%A4%E8%AF%81%E6%B5%81%E7%A8%8B%E6%BA%90%E7%A0%81%E5%88%86%E6%9E%90
[github]: https://github.com/settings/applications
[markdown]: https://blog.csdn.net/qq_42874547/article/details/97801216
[20201208221222783.png]: https://img-blog.csdnimg.cn/20201208221222783.png
[2020120822125021.png]: https://img-blog.csdnimg.cn/2020120822125021.png
[20201208221318245.png]: /images/20221120/3d9addeb8f8e42bb9fc896b94095a9eb.png
[JustAuth 1]: https://justauth.wiki/#/ext/justauth_integrated_with_the_existing_account_system
[sys_manager.sql]: https://github.com/gengzi/gengzi_spring_security/tree/master/gengzi_spring_security/src/main/resources/db
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI4ODE3NzM5_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20201208221426730.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI4ODE3NzM5,size_16,color_FFFFFF,t_70
[login.html]: https://github.com/gengzi/gengzi_spring_security/blob/master/gengzi_spring_security/src/main/resources/templates/login.html
[Oauth2LoginController]: https://github.com/gengzi/gengzi_spring_security/blob/master/gengzi_spring_security/src/main/java/fun/gengzi/gengzi_spring_security/sys/controller/Oauth2LoginController.java
[AuthRequestServiceImpl.java]: https://github.com/gengzi/gengzi_spring_security/blob/master/gengzi_spring_security/src/main/java/fun/gengzi/gengzi_spring_security/sys/service/impl/AuthRequestServiceImpl.java
[application.yml]: https://github.com/gengzi/gengzi_spring_security/blob/master/gengzi_spring_security/src/main/resources/application.yml
[Link 1]: https://docs.spring.io/spring-boot/docs/2.2.11.RELEASE/reference/html/spring-boot-features.html#boot-features-external-config
[AuthRequestConfigEntity.java]: https://github.com/gengzi/gengzi_spring_security/blob/master/gengzi_spring_security/src/main/java/fun/gengzi/gengzi_spring_security/sys/entity/AuthRequestConfigEntity.java
[OtherSysOauth2LoginFilter.java]: https://github.com/gengzi/gengzi_spring_security/blob/master/gengzi_spring_security/src/main/java/fun/gengzi/gengzi_spring_security/filter/OtherSysOauth2LoginFilter.java
[OtherSysOauth2LoginAuthenticationToken.java]: https://github.com/gengzi/gengzi_spring_security/blob/master/gengzi_spring_security/src/main/java/fun/gengzi/gengzi_spring_security/token/OtherSysOauth2LoginAuthenticationToken.java
[OtherSysOauth2LoginProvider.java]: https://github.com/gengzi/gengzi_spring_security/blob/master/gengzi_spring_security/src/main/java/fun/gengzi/gengzi_spring_security/provider/OtherSysOauth2LoginProvider.java
[OtherSysOauth2LoginUserDetailsServiceImpl.java_]: https://github.com/gengzi/gengzi_spring_security/blob/master/gengzi_spring_security/src/main/java/fun/gengzi/gengzi_spring_security/service/impl/OtherSysOauth2LoginUserDetailsServiceImpl.java
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI4ODE3NzM5_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20201208221455928.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI4ODE3NzM5,size_16,color_FFFFFF,t_70
[oauthlogin.html]: https://github.com/gengzi/gengzi_spring_security/blob/master/gengzi_spring_security/src/main/resources/templates/oauthlogin.html
[UserBindFilter.java]: https://github.com/gengzi/gengzi_spring_security/blob/master/gengzi_spring_security/src/main/java/fun/gengzi/gengzi_spring_security/filter/UserBindFilter.java
[BindAuthenticationToken.java]: https://github.com/gengzi/gengzi_spring_security/blob/master/gengzi_spring_security/src/main/java/fun/gengzi/gengzi_spring_security/token/BindAuthenticationToken.java
[BindLoginProvider.java]: https://github.com/gengzi/gengzi_spring_security/blob/master/gengzi_spring_security/src/main/java/fun/gengzi/gengzi_spring_security/provider/BindLoginProvider.java
[OtherSysOauth2LoginAuthenticationSecurityConfig]: https://github.com/gengzi/gengzi_spring_security/blob/master/gengzi_spring_security/src/main/java/fun/gengzi/gengzi_spring_security/config/OtherSysOauth2LoginAuthenticationSecurityConfig.java
[WebSecurityConfig.java_]: https://github.com/gengzi/gengzi_spring_security/blob/master/gengzi_spring_security/src/main/java/fun/gengzi/gengzi_spring_security/config/WebSecurityConfig.java
[Link 2]: https://gengzi.github.io/Code-animal/#/./docs/fuli/README
[gengzi]: https://github.com/gengzi
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI4ODE3NzM5_size_16_color_FFFFFF_t_70_pic_center]: https://img-blog.csdnimg.cn/20201111233905992.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI4ODE3NzM5,size_16,color_FFFFFF,t_70#pic_center