基于Spring Security的Oauth2授权实现方法

前言

经过一段时间的学习Oauth2，在网上也借鉴学习了一些大牛的经验，推荐在学习的过程中多看几遍阮一峰的《理解OAuth 2.0》，经过对Oauth2的多种方式的实现，个人推荐Spring Security和Oauth2的实现是相对优雅的，理由如下：

1、相对于直接实现Oauth2，减少了很多代码量，也就减少的查找问题的成本。

2、通过调整配置文件，灵活配置Oauth相关配置。

3、通过结合路由组件（如zuul），更好的实现微服务权限控制扩展。

Oauth2概述

oauth2根据使用场景不同，分成了4种模式

授权码模式（authorization code）
简化模式（implicit）
密码模式（resource owner password credentials）
客户端模式（client credentials）

在项目中我们通常使用授权码模式，也是四种模式中最复杂的，通常网站中经常出现的微博，qq第三方登录，都会采用这个形式。

Oauth2授权主要由两部分组成：

Authorization server：认证服务
Resource server：资源服务

在实际项目中以上两个服务可以在一个服务器上，也可以分开部署。

准备阶段

核心maven依赖如下

    <dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-web</artifactId>
 </dependency>
 
 <dependency>
  <groupId>com.fasterxml.jackson.datatype</groupId>
  <artifactId>jackson-datatype-joda</artifactId>
 </dependency>
 <dependency>
  <groupId>org.thymeleaf.extras</groupId>
  <artifactId>thymeleaf-extras-springsecurity4</artifactId>
 </dependency>
 <dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-thymeleaf</artifactId>
 </dependency>
 <dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-security</artifactId>
 </dependency>
 <dependency>
  <groupId>org.springframework.security.oauth</groupId>
  <artifactId>spring-security-oauth2</artifactId>
 </dependency>
 
 <dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-jdbc</artifactId>
 </dependency>
 <dependency>
  <groupId>mysql</groupId>
  <artifactId>mysql-connector-java</artifactId>
 </dependency>
 <dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-data-jpa</artifactId>
 </dependency>

token的存储主流有三种方式，分别为内存、redis和数据库，在实际项目中通常使用redis和数据库存储。个人推荐使用mysql数据库存储。

初始化数据结构、索引和数据SQL语句如下：

--
-- Oauth sql -- MYSQL
--
 
Drop table if exists oauth_client_details;
create table oauth_client_details (
 client_id VARCHAR(255) PRIMARY KEY,
 resource_ids VARCHAR(255),
 client_secret VARCHAR(255),
 scope VARCHAR(255),
 authorized_grant_types VARCHAR(255),
 web_server_redirect_uri VARCHAR(255),
 authorities VARCHAR(255),
 access_token_validity INTEGER,
 refresh_token_validity INTEGER,
 additional_information TEXT,
 autoapprove VARCHAR (255) default 'false'
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
 
 
Drop table if exists oauth_access_token;
create table oauth_access_token (
 token_id VARCHAR(255),
 token BLOB,
 authentication_id VARCHAR(255),
 user_name VARCHAR(255),
 client_id VARCHAR(255),
 authentication BLOB,
 refresh_token VARCHAR(255)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
 
 
Drop table if exists oauth_refresh_token;
create table oauth_refresh_token (
 token_id VARCHAR(255),
 token BLOB,
 authentication BLOB
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
 
 
Drop table if exists oauth_code;
create table oauth_code (
 code VARCHAR(255),
 authentication BLOB
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
 
 
 
-- Add indexes
create index token_id_index on oauth_access_token (token_id);
create index authentication_id_index on oauth_access_token (authentication_id);
create index user_name_index on oauth_access_token (user_name);
create index client_id_index on oauth_access_token (client_id);
create index refresh_token_index on oauth_access_token (refresh_token);
create index token_id_index on oauth_refresh_token (token_id);
create index code_index on oauth_code (code);
 
-- INSERT DEFAULT DATA
INSERT INTO `oauth_client_details` VALUES ('dev', '', 'dev', 'app', 'authorization_code', 'http://localhost:7777/', '', '3600', '3600', '{"country":"CN","country_code":"086"}', 'TAIJI');

核心配置

核心配置主要分为授权应用和客户端应用两部分，如下：

授权应用：即Oauth2授权服务，主要包括Spring Security、认证服务和资源服务两部分配置
客户端应用：即通过授权应用进行认证的应用，多个客户端应用间支持单点登录

授权应用主要配置如下：

application.properties链接已初始化Oauth2的数据库即可

Application启动类，授权服务开启配置和Spring Security配置，如下：

@SpringBootApplication
@AutoConfigureAfter(JacksonAutoConfiguration.class)
@Order(SecurityProperties.ACCESS_OVERRIDE_ORDER)
@EnableAuthorizationServer
public class Application extends WebSecurityConfigurerAdapter {
  public static void main(String[] args) {
    SpringApplication.run(Application.class, args);
  }
 
  // 启动的时候要注意，由于我们在controller中注入了RestTemplate，所以启动的时候需要实例化该类的一个实例
  @Autowired
  private RestTemplateBuilder builder;
 
  // 使用RestTemplateBuilder来实例化RestTemplate对象，spring默认已经注入了RestTemplateBuilder实例
  @Bean
  public RestTemplate restTemplate() {
    return builder.build();
  }
 
  @Configuration
  public class WebMvcConfig extends WebMvcConfigurerAdapter {
    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
      registry.addViewController("/login").setViewName("login");
    }
  }
 
 
  @Override
  protected void configure(HttpSecurity http) throws Exception {
 
    http.headers().frameOptions().disable();
    http.authorizeRequests()
        .antMatchers("/403").permitAll() // for test
        .antMatchers("/login", "/oauth/authorize", "/oauth/confirm_access", "/appManager").permitAll() // for login
        .antMatchers("/image", "/js/**", "/fonts/**").permitAll() // for login
        .antMatchers("/j_spring_security_check").permitAll()
        .antMatchers("/oauth/authorize").authenticated();
    /*.anyRequest().fullyAuthenticated();*/
    http.formLogin().loginPage("/login").failureUrl("/login?error").permitAll()
        .and()
        .authorizeRequests().anyRequest().authenticated()
        .and().logout().invalidateHttpSession(true)
        .and().sessionManagement().maximumSessions(1).expiredUrl("/login?expired").sessionRegistry(sessionRegistry());
    http.csrf().csrfTokenRepository(CookieCsrfTokenRepository.withHttpOnlyFalse());
    http.rememberMe().disable();
    http.httpBasic();
 
  }
 
}

资源服务开启，如下：

@Configuration
@EnableResourceServer
protected static class ResourceServerConfiguration extends ResourceServerConfigurerAdapter {
    @Override
    public void configure(HttpSecurity http) throws Exception {
      http.antMatcher("/me").authorizeRequests().anyRequest().authenticated();
    }
  }

OAuth2认证授权服务配置，如下：

@Configuration
public class AuthorizationServerConfiguration extends AuthorizationServerConfigurerAdapter {
 public static final Logger logger = LoggerFactory.getLogger(AuthorizationServerConfiguration.class);
 
 @Autowired
  private AuthenticationManager authenticationManager;
 
  @Autowired
  private DataSource dataSource;
  @Bean
  public TokenStore tokenStore() {
    return new JdbcTokenStore(dataSource);
  }
 
 
  @Override
  public void configure(AuthorizationServerEndpointsConfigurer endpoints) throws Exception {
 
    endpoints.authenticationManager(authenticationManager);
    endpoints.tokenStore(tokenStore());
    // 配置TokenServices参数
    DefaultTokenServices tokenServices = new DefaultTokenServices();
    tokenServices.setTokenStore(endpoints.getTokenStore());
    tokenServices.setSupportRefreshToken(false);
    tokenServices.setClientDetailsService(endpoints.getClientDetailsService());
    tokenServices.setTokenEnhancer(endpoints.getTokenEnhancer());
    tokenServices.setAccessTokenValiditySeconds( (int) TimeUnit.MINUTES.toSeconds(10)); //分钟
    endpoints.tokenServices(tokenServices);
  }
 
 
  @Override
  public void configure(AuthorizationServerSecurityConfigurer oauthServer) throws Exception {
    oauthServer.checkTokenAccess("isAuthenticated()");
    oauthServer.allowFormAuthenticationForClients();
  }
 
  @Bean
  public ClientDetailsService clientDetails() {
    return new JdbcClientDetailsService(dataSource);
  }
 
  @Override
  public void configure(ClientDetailsServiceConfigurer clients) throws Exception {
      clients.withClientDetails(clientDetails());
    /*    
    *    基于内存配置项
    *    clients.inMemory()
        .withClient("community")
        .secret("community")
        .authorizedGrantTypes("authorization_code").redirectUris("http://tech.taiji.com.cn/")
        .scopes("app").and() .withClient("dev")
        .secret("dev")
        .authorizedGrantTypes("authorization_code").redirectUris("http://localhost:7777/")
        .scopes("app");*/
  }
}

客户端应用主要配置如下：

application.properties中Oauth2配置，如下

security.oauth2.client.clientId=dev
security.oauth2.client.clientSecret=dev
security.oauth2.client.accessTokenUri=http://localhost:9999/oauth/token
security.oauth2.client.userAuthorizationUri=http://localhost:9999/oauth/authorize
security.oauth2.resource.loadBalanced=true
security.oauth2.resource.userInfoUri=http://localhost:9999/me
security.oauth2.resource.logout.url=http://localhost:9999/revoke-token
security.oauth2.default.roleName=ROLE_USER

Oauth2Config配置，授权Oauth2Sso配置和Spring Security配置，如下：

@Configuration
@EnableOAuth2Sso
public class Oauth2Config extends WebSecurityConfigurerAdapter{
 @Autowired
 CustomSsoLogoutHandler customSsoLogoutHandler;
 
 @Autowired
 OAuth2ClientContext oauth2ClientContext;
 
 @Bean
 public HttpFirewall allowUrlEncodedSlashHttpFirewall() {
   StrictHttpFirewall firewall = new StrictHttpFirewall();
   firewall.setAllowUrlEncodedSlash(true);
   firewall.setAllowSemicolon(true);
   return firewall;
 }
 
 @Bean
 @ConfigurationProperties("security.oauth2.client")
 public AuthorizationCodeResourceDetails taiji() {
 return new AuthorizationCodeResourceDetails();
 }
 
 @Bean
 public CommunitySuccessHandler customSuccessHandler() {
 CommunitySuccessHandler customSuccessHandler = new CommunitySuccessHandler();
 customSuccessHandler.setDefaultTargetUrl("/");
 return customSuccessHandler;
 }
 
 @Bean
 public CustomFailureHandler customFailureHandler() {
 CustomFailureHandler customFailureHandler = new CustomFailureHandler();
 customFailureHandler.setDefaultFailureUrl("/index");
 return customFailureHandler;
 }
 
 @Bean
 @Primary
 @ConfigurationProperties("security.oauth2.resource")
 public ResourceServerProperties taijiOauthorResource() {
 return new ResourceServerProperties();
 }
 
 @Bean
 @Override
 public AuthenticationManager authenticationManagerBean() throws Exception {
 List<AuthenticationProvider> authenticationProviderList = new ArrayList<AuthenticationProvider>();
 authenticationProviderList.add(customAuthenticationProvider());
 AuthenticationManager authenticationManager = new ProviderManager(authenticationProviderList);
 return authenticationManager;
 }
 
 @Autowired
 public TaijiUserDetailServiceImpl userDetailsService;
 
 @Bean
 public TaijiAuthenticationProvider customAuthenticationProvider() {
 TaijiAuthenticationProvider customAuthenticationProvider = new TaijiAuthenticationProvider();
 customAuthenticationProvider.setUserDetailsService(userDetailsService);
 return customAuthenticationProvider;
 }
 
 
 @Autowired
 private MenuService menuService;
 @Autowired
 private RoleService roleService;
 @Bean
 public TaijiSecurityMetadataSource taijiSecurityMetadataSource() {
 TaijiSecurityMetadataSource fisMetadataSource = new TaijiSecurityMetadataSource();
// fisMetadataSource.setMenuService(menuService);
 fisMetadataSource.setRoleService(roleService);
 return fisMetadataSource;
 }
 
 @Autowired
 private CommunityAccessDecisionManager accessDecisionManager;
 @Bean
 public CommunityFilterSecurityInterceptor communityfiltersecurityinterceptor() throws Exception {
 CommunityFilterSecurityInterceptor taijifiltersecurityinterceptor = new CommunityFilterSecurityInterceptor();
 taijifiltersecurityinterceptor.setFisMetadataSource(taijiSecurityMetadataSource());
 taijifiltersecurityinterceptor.setAccessDecisionManager(accessDecisionManager);
 taijifiltersecurityinterceptor.setAuthenticationManager(authenticationManagerBean());
 return taijifiltersecurityinterceptor;
 }
 
 
 @Override
 protected void configure(HttpSecurity http) throws Exception {
 http.authorizeRequests()
//     .antMatchers("/").permitAll() 
//  .antMatchers("/login").permitAll() // 
//  .antMatchers("/image").permitAll() // 
//  .antMatchers("/upload/*").permitAll() // for
//  .antMatchers("/common/**").permitAll() // for 
//  .antMatchers("/community/**").permitAll()
  
//     .antMatchers("/").anonymous()
     .antMatchers("/personal/**").authenticated()
     .antMatchers("/notify/**").authenticated()
     .antMatchers("/admin/**").authenticated()
     .antMatchers("/manage/**").authenticated()
     .antMatchers("/**/personal/**").authenticated()
     .antMatchers("/user/**").authenticated()
  .anyRequest()
  .permitAll()
//  .authenticated()
  .and()
  .logout()
  .logoutRequestMatcher(new AntPathRequestMatcher("/logout"))
  .addLogoutHandler(customSsoLogoutHandler)
  .deleteCookies("JSESSIONID").invalidateHttpSession(true)
  .and()
  .csrf().disable()
  //.csrfTokenRepository(CookieCsrfTokenRepository.withHttpOnlyFalse())
  //.and()
  .addFilterBefore(loginFilter(), BasicAuthenticationFilter.class)
  .addFilterAfter(communityfiltersecurityinterceptor(), FilterSecurityInterceptor.class);///TaijiSecurity权限控制
 }
 
 @Override
 public void configure(WebSecurity web) throws Exception {
 // 解决静态资源被拦截的问题
 web.ignoring().antMatchers("/theme/**")
  .antMatchers("/community/**")
  .antMatchers("/common/**")
  .antMatchers("/upload/*");
 web.httpFirewall(allowUrlEncodedSlashHttpFirewall());
 }
 
 
 public OAuth2ClientAuthenticationProcessingFilter loginFilter() throws Exception {
 OAuth2ClientAuthenticationProcessingFilter ff = new OAuth2ClientAuthenticationProcessingFilter("/login");
 OAuth2RestTemplate restTemplate = new OAuth2RestTemplate(taiji(),oauth2ClientContext);
 ff.setRestTemplate(restTemplate);
 UserInfoTokenServices tokenServices = new UserInfoTokenServices(taijiOauthorResource().getUserInfoUri(), taiji().getClientId());
 tokenServices.setRestTemplate(restTemplate);
 ff.setTokenServices(tokenServices);
 ff.setAuthenticationSuccessHandler(customSuccessHandler());
    ff.setAuthenticationFailureHandler(customFailureHandler());
 return ff;
 }
}

授权成功回调类，认证成功用户落地，如下：

public class CommunitySuccessHandler extends SavedRequestAwareAuthenticationSuccessHandler {
 
 protected final Log logger = LogFactory.getLog(this.getClass());
 
 private RequestCache requestCache = new HttpSessionRequestCache();
 @Autowired
 private UserService userService;
 @Autowired
 private RoleService roleService;
 @Inject
 AuthenticationManager authenticationManager;
 @Value("${security.oauth2.default.roleName}")
 private String defaultRole;
 @Inject
 TaijiOperationLogService taijiOperationLogService;
 
 @Inject
 CommunityConfiguration communityConfiguration;
 
 @Inject
 private ObjectMapper objectMapper;
 
 @ScoreRule(code="login_score")
 @Override
 public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response,
  Authentication authentication) throws ServletException, IOException {
 // 存放authentication到SecurityContextHolder
 SecurityContextHolder.getContext().setAuthentication(authentication);
 HttpSession session = request.getSession(true);
 // 在session中存放security context,方便同一个session中控制用户的其他操作
 session.setAttribute("SPRING_SECURITY_CONTEXT", SecurityContextHolder.getContext());
 OAuth2Authentication oauth2Authentication = (OAuth2Authentication) authentication;
 Object details = oauth2Authentication.getUserAuthentication().getDetails();
 UserDto user = saveUser((Map) details);//用户落地
 Collection<GrantedAuthority> obtionedGrantedAuthorities = obtionGrantedAuthorities(user);
 UsernamePasswordAuthenticationToken newToken = new UsernamePasswordAuthenticationToken(
  new User(user.getLoginName(), "", true, true, true, true, obtionedGrantedAuthorities), 
  authentication.getCredentials(), obtionedGrantedAuthorities);
 
 newToken.setDetails(details);
 Object oath2details=oauth2Authentication.getDetails();
 oauth2Authentication = new OAuth2Authentication(oauth2Authentication.getOAuth2Request(), newToken);
 oauth2Authentication.setDetails(oath2details);
 oauth2Authentication.setAuthenticated(true);
 SecurityContextHolder.getContext().setAuthentication(oauth2Authentication);
 
 LogUtil.log2database(taijiOperationLogService, request, user.getLoginName(), "user", "", "", "user_login", "登录", "onAuthenticationSuccess","");
 session.setAttribute("user", user);
 Collection<GrantedAuthority> authorities = (Collection<GrantedAuthority>) authentication.getAuthorities();
 
 SavedRequest savedRequest = requestCache.getRequest(request, response);
 if (savedRequest == null) {
  super.onAuthenticationSuccess(request, response, authentication);
  return;
 }
 String targetUrlParameter = getTargetUrlParameter();
 if (isAlwaysUseDefaultTargetUrl()
  || (targetUrlParameter != null && StringUtils.hasText(request.getParameter(targetUrlParameter)))) {
  requestCache.removeRequest(request, response);
  super.onAuthenticationSuccess(request, response, authentication);
  return;
 }
 clearAuthenticationAttributes(request);
 // Use the DefaultSavedRequest URL
 String targetUrl = savedRequest.getRedirectUrl();
// logger.debug("Redirecting to DefaultSavedRequest Url: " + targetUrl);
 
 logger.debug("Redirecting to last savedRequest Url: " + targetUrl);
 getRedirectStrategy().sendRedirect(request, response, targetUrl);
// getRedirectStrategy().sendRedirect(request, response, this.getDefaultTargetUrl());
 }
 
 public void setRequestCache(RequestCache requestCache) {
 this.requestCache = requestCache;
 }
 
 //用户落地
 private UserDto saveUser(Map userInfo) {
 UserDto dto=null;
 try {
  String json = objectMapper.writeValueAsString(userInfo);
  dto = objectMapper.readValue(json,UserDto.class);
 } catch (JsonProcessingException e) {
  // TODO Auto-generated catch block
  e.printStackTrace();
 } catch (IOException e) {
  // TODO Auto-generated catch block
  e.printStackTrace();
 }
 
 UserDto user=userService.findByLoginName(dto.getLoginName());
 if(user!=null) {
  return user;
 }
 Set<RoleDto> roles= new HashSet<RoleDto>();
 RoleDto role = roleService.findByRoleName(defaultRole);
 roles.add(role);
 dto.setRoles(roles);
 List<UserDto> list = new ArrayList<UserDto>();
 list.add(dto);
 dto.generateTokenForCommunity(communityConfiguration.getControllerSalt());
 String id =userService.saveUserWithRole(dto,communityConfiguration.getControllerSalt());
 dto.setId(id);
 return dto;
 }
 
 /**
   * Map转成实体对象
   *
   * @param map  map实体对象包含属性
   * @param clazz 实体对象类型
   * @return
   */
  public static <T> T map2Object(Map<String, Object> map, Class<T> clazz) {
    if (map == null) {
      return null;
    }
    T obj = null;
    try {
      obj = clazz.newInstance();
 
      Field[] fields = obj.getClass().getDeclaredFields();
      for (Field field : fields) {
        int mod = field.getModifiers();
        if (Modifier.isStatic(mod) || Modifier.isFinal(mod)) {
          continue;
        }
        field.setAccessible(true);
        String filedTypeName = field.getType().getName();
        if (filedTypeName.equalsIgnoreCase("java.util.date")) {
          String datetimestamp = String.valueOf(map.get(field.getName()));
          if (datetimestamp.equalsIgnoreCase("null")) {
            field.set(obj, null);
          } else {
            field.set(obj, new Date(Long.parseLong(datetimestamp)));
          }
        } else {
         String v = map.get(field.getName()).toString();
          field.set(obj, map.get(field.getName()));
        }
      }
    } catch (Exception e) {
      e.printStackTrace();
    }
    return obj;
  }
 
 
 
 // 取得用户的权限
 private Collection<GrantedAuthority> obtionGrantedAuthorities(UserDto users) {
 Collection<GrantedAuthority> authSet = new HashSet<GrantedAuthority>();
 // 获取用户角色
 Set<RoleDto> roles = users.getRoles();
 if (null != roles && !roles.isEmpty())
  for (RoleDto role : roles) {
 authSet.add(new SimpleGrantedAuthority(role.getId()));
  }
 return authSet;
 }
}

客户端应用，单点登录方法，如下：

@RequestMapping(value = "/loadToken", method = { RequestMethod.GET })
 public void loadToken(Model model,HttpServletResponse response,@RequestParam(value = "clientId", required = false) String clientId) {
 String token = "";
 RequestAttributes ra = RequestContextHolder.getRequestAttributes();
 ServletRequestAttributes sra = (ServletRequestAttributes) ra;
 HttpServletRequest request = sra.getRequest();
 HttpSession session = request.getSession();
 if (session.getAttribute("SPRING_SECURITY_CONTEXT") != null) {
  SecurityContext securityContext = (SecurityContext)session.getAttribute("SPRING_SECURITY_CONTEXT");
  Authentication authentication = securityContext.getAuthentication();
  OAuth2AuthenticationDetails OAuth2AuthenticationDetails = (OAuth2AuthenticationDetails) authentication.getDetails();
  token = OAuth2AuthenticationDetails.getTokenValue();
 }
 try {
  String url = "http://localhost:9999/rediect?clientId=dev&token="+token;
  response.sendRedirect(url);
 } catch (IOException e) {
  e.printStackTrace();
 }
 }

服务端应用，单点登录方法，如下：

@RequestMapping("/rediect")
 public String rediect(HttpServletResponse responsel, String clientId, String token) {
 OAuth2Authentication authentication = tokenStore.readAuthentication(token);
 if (authentication == null) {
  throw new InvalidTokenException("Invalid access token: " + token);
 }
 OAuth2Request request = authentication.getOAuth2Request();
 Map map = new HashMap();
 map.put("code", request.getRequestParameters().get("code"));
 map.put("grant_type", request.getRequestParameters().get("grant_type"));
 map.put("response_type", request.getRequestParameters().get("response_type"));
 //TODO 需要查询一下要跳转的Client_id配置的回调地址
 map.put("redirect_uri", "http://127.0.0.1:8888");
 map.put("client_id", clientId);
 map.put("state", request.getRequestParameters().get("state"));
 request = new OAuth2Request(map, clientId, request.getAuthorities(), request.isApproved(), request.getScope(),
  request.getResourceIds(), map.get("redirect_uri").toString(), request.getResponseTypes(),request.getExtensions()); // 模拟用户登录
 Authentication t = tokenStore.readAuthentication(token);
 OAuth2Authentication auth = new OAuth2Authentication(request, t);
 OAuth2AccessToken new_token = defaultTokenServices.createAccessToken(auth);
 return "redirect:/user_info?access_token=" + new_token.getValue();
 }
@RequestMapping({ "/user_info" })
 public void user(String access_token,HttpServletResponse response) {
 OAuth2Authentication auth=tokenStore.readAuthentication(access_token);
 OAuth2Request request=auth.getOAuth2Request();
  Map<String, String> map = new LinkedHashMap<>();
  map.put("loginName", auth.getUserAuthentication().getName());
  map.put("password", auth.getUserAuthentication().getName());
  map.put("id", auth.getUserAuthentication().getName());
  try {
 response.sendRedirect(request.getRedirectUri()+"?name="+auth.getUserAuthentication().getName());
 } catch (IOException e) {
 e.printStackTrace();
 }
}

个人总结

Oauth2的设计相对复杂，需要深入学习多看源码才能了解内部的一些规则，如数据token的存储是用的实体序列化后内容，需要反序列才能在项目是使用，也许是为了安全，但在学习过程需要提前掌握，还有在token的过期时间不能为0，通常来讲过期时间为0代表长期有效，但在Oauth2中则报错，这些坑需要一点点探索。

通过集成Spring Security和Oauth2较大的提供的开发的效率，也提供的代码的灵活性和可用性。但封装的核心类需要大家都了解一下，通读下代码，以便在项目中可随时获取需要的参数。

示例代码

以下是个人的一套代码，供参考。

基于Spring Cloud的微服务框架集成Oauth2的代码示例

Oauth2数据结构，如下：

频道导航

基于Spring Security的Oauth2授权实现方法

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