个性化Token 目的

• 默认通过调用 /oauth/token 返回的报文格式包含以下参数

{
    "access_token": "e6669cdf-b6cd-43fe-af5c-f91a65041382",
    "token_type": "bearer",
    "refresh_token": "da91294d-446c-4a89-bdcf-88aee15a75e8",
    "expires_in": 43199, 
    "scope": "server"
}

并没包含用户的业务信息比如用户信息、租户信息等。

• 扩展生成包含业务信息（如下）,避免系统多次调用，直接可以通过认证接口获取到用户信息等，大大提高系统性能

{
    "access_token":"a6f3b6d6-93e6-4eb8-a97d-3ae72240a7b0",
    "token_type":"bearer",
    "refresh_token":"710ab162-a482-41cd-8bad-26456af38e4f",
    "expires_in":42396,
    "scope":"server",
    "tenant_id":1,
    "license":"made by pigx",
    "dept_id":1,
    "user_id":1,
    "username":"admin"
}

密码模式生成Token 源码解析

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​ 主页参考红框部分

• ResourceOwnerPasswordTokenGranter （密码模式）根据用户的请求信息，进行认证得到当前用户上下文信息

  protected OAuth2Authentication getOAuth2Authentication(ClientDetails client, TokenRequest tokenRequest) {
      Map<String, String> parameters = new LinkedHashMap<String, String>(tokenRequest.getRequestParameters());
    String username = parameters.get("username");
    String password = parameters.get("password");
    // Protect from downstream leaks of password
    parameters.remove("password");
      Authentication userAuth = new UsernamePasswordAuthenticationToken(username, password);
     ((AbstractAuthenticationToken) userAuth).setDetails(parameters);
        
      userAuth = authenticationManager.authenticate(userAuth);
  
      OAuth2Request storedOAuth2Request =  getRequestFactory().createOAuth2Request(client, tokenRequest);       
        return new OAuth2Authentication(storedOAuth2Request, userAuth);
  }
  

• 然后调用AbstractTokenGranter.getAccessToken() 获取OAuth2AccessToken

  protected OAuth2AccessToken getAccessToken(ClientDetails client, TokenRequest tokenRequest) {
     return tokenServices.createAccessToken(getOAuth2Authentication(client, tokenRequest));
  }
  

• 默认使用DefaultTokenServices来获取token

  public OAuth2AccessToken createAccessToken(OAuth2Authentication authentication) throws AuthenticationException {
  
    ... 一系列判断 ，合法性、是否过期等判断  
    OAuth2AccessToken accessToken = createAccessToken(authentication, refreshToken);
        tokenStore.storeAccessToken(accessToken, authentication);
        // In case it was modified
        refreshToken = accessToken.getRefreshToken();
        if (refreshToken != null) {
            tokenStore.storeRefreshToken(refreshToken, authentication);
        }
        return accessToken;
  }
  
  

• createAccessToken 核心逻辑

  // 默认刷新token 的有效期
  private int refreshTokenValiditySeconds = 60 * 60 * 24 * 30; // default 30 days.
  // 默认token 的有效期
  private int accessTokenValiditySeconds = 60 * 60 * 12; // default 12 hours.
  
  private OAuth2AccessToken createAccessToken(OAuth2Authentication authentication, OAuth2RefreshToken refreshToken) {
      DefaultOAuth2AccessToken token = new DefaultOAuth2AccessToken(uuid);
      token.setExpiration(Date)
      token.setRefreshToken(refreshToken);
      token.setScope(authentication.getOAuth2Request().getScope());
      return accessTokenEnhancer != null ? accessTokenEnhancer.enhance(token, authentication) : token;
  }
  

  如上代码，在拼装好token对象后会调用认证服务器配置TokenEnhancer( 增强器) 来对默认的token进行增强。

• TokenEnhancer.enhance 通过上下文中的用户信息来个性化Token

  public OAuth2AccessToken enhance(OAuth2AccessToken accessToken, OAuth2Authentication authentication) {
      final Map<String, Object> additionalInfo = new HashMap<>(8);
      PigxUser pigxUser = (PigxUser) authentication.getUserAuthentication().getPrincipal();
      additionalInfo.put("user_id", pigxUser.getId());
      additionalInfo.put("username", pigxUser.getUsername());
      additionalInfo.put("dept_id", pigxUser.getDeptId());
      additionalInfo.put("tenant_id", pigxUser.getTenantId());
      additionalInfo.put("license", SecurityConstants.PIGX_LICENSE);
      ((DefaultOAuth2AccessToken) accessToken).setAdditionalInformation(additionalInfo);
      return accessToken;
  }
  

基于pig 看下最终的实现效果

Pig 基于Spring Cloud、oAuth2.0开发基于Vue前后分离的开发平台，支持账号、短信、SSO等多种登录，提供配套视频开发教程。
https://gitee.com/log4j/pig

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