一 进行授权页

浏览器输入 http://localhost:8081/oauth/authorize?response_type=code&redirect_uri=http://localhost:8081/callback&client_id=android1&scop=all

二 使用资源站用户登陆

自动跨到资源登陆页，先登陆

三 授权资源类型

登陆成功后，去授权你的资源，这些资源是在AuthorizationServerConfig.configure方法里配置的

@Overridepublic void configure(ClientDetailsServiceConfigurer clients) throws Exception {clients.inMemory().withClient(ClientID).secret(passwordEncoder.encode(ClientSecret)).authorizedGrantTypes("authorization_code", "refresh_token","password", "implicit").scopes("read","write","del","userinfo").redirectUris(RedirectURLs);}

四 接到code

授权之后，系统会重定向到你的redirect_uri这个页面，并带上唯一的code

五 获取access_token

我们拿着code就要再去授权服务器去获取token了，你可以在你的代码里写这个，也可以手动拿着code，去拼成一个url，再去拿token，就像这下面的实例。

注意向oauth/token发的是post请求，client_id和client_secret如果在url上传递，如果在AuthorizationServerConfig类的configure方法中开启allowFormAuthenticationForClients，代码如下

@Overridepublic void configure(AuthorizationServerSecurityConfigurer oauthServer) throws Exception {oauthServer.tokenKeyAccess("permitAll()").checkTokenAccess("isAuthenticated()").allowFormAuthenticationForClients();//支持把secret和clientid写在url上，否则需要在头上}

然后请求后给有下面的响应

Authorization Ccode------RFRLFYaccess_token_url http://localhost:8081/oauth/token?client_id=android1&code=RFRLFY&grant_type=authorization_code&redirect_uri=http://localhost:8081/callback&client_secret=android1Access Token Response ---------{"access_token":"faadf3bf-6488-4036-bc3b-21b0a979602c","token_type":"bearer","refresh_token":"1b01f133-c5ab-419f-8125-088c85916ecb","expires_in":43187,"scope":"read"}

回调页面代码，主要实现了对code的获取，对access_token的组织，然后请求时把access_token带上，这个方法一般会做成公用的过滤器

@Controllerpublic class UserController { @RequestMapping(value = "/callback", method = RequestMethod.GET) public ResponseEntity callback(@RequestParam("code") String code) throws JsonProcessingException, IOException {  ResponseEntity response = null;  System.out.println("Authorization Ccode------" + code);  RestTemplate restTemplate = new RestTemplate();  String access_token_url = "http://localhost:8081/oauth/token";  access_token_url += "?client_id=android1&code=" + code;  access_token_url += "&grant_type=authorization_code";  access_token_url += "&redirect_uri=http://localhost:8081/callback";  access_token_url += "&client_secret=android1";  System.out.println("access_token_url " + access_token_url);  response = restTemplate.exchange(access_token_url, HttpMethod.POST, null, String.class);  ObjectMapper mapper = new ObjectMapper();  JsonNode node = mapper.readTree(response.getBody());  String token = node.path("access_token").asText(); System.out.println("access_token" +access_token);  String url = "http://localhost:8081/index"; HttpHeaders headers1 = new HttpHeaders(); headers1.add("Authorization", "Bearer " + token); HttpEntity entity = new HttpEntity<>(headers1); ResponseEntity result = restTemplate.exchange(url, HttpMethod.GET, entity, String.class); return result; }