增加 SSO 示例（增加注释）

Author: YunaiV

lab-68/lab-68-demo21-resource-server-on-sso/src/main/java/cn/iocoder/springboot/lab68/resourceserverdemo/config/OAuth2ResourceServerConfig.java renamed to lab-68/lab-68-demo21-resource-server-on-sso/src/main/java/cn/iocoder/springboot/lab68/resourceserverdemo/config/OAuthSsoConfig.java

@@ -4,10 +4,10 @@
 import org.springframework.context.annotation.Configuration;
 
 /**
- * 资源服务器配置
+ * SSO 配置
  */
 @Configuration
-@EnableOAuth2Sso
-public class OAuth2ResourceServerConfig {
+@EnableOAuth2Sso // 开启 Sso 功能
+public class OAuthSsoConfig {
 
 }

lab-68/lab-68-demo21-resource-server-on-sso/src/main/java/cn/iocoder/springboot/lab68/resourceserverdemo/config/SecurityConfig.java

@@ -6,7 +6,7 @@
 import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
 
 @Configuration
-@EnableGlobalMethodSecurity(prePostEnabled = true)
-@Order(101)
+@EnableGlobalMethodSecurity(prePostEnabled = true) // 开启对 Spring Security 注解的方法，进行权限验证。
+@Order(101) // OAuth2SsoDefaultConfiguration 使用了 Order(100)，所以这里设置为 Order(101)，防止相同顺序导致报错
 public class SecurityConfig extends WebSecurityConfigurerAdapter {
 }

lab-68/lab-68-demo21-resource-server-on-sso/src/main/java/cn/iocoder/springboot/lab68/resourceserverdemo/controller/DemoController.java

@@ -13,13 +13,13 @@
 public class DemoController {
 
     @GetMapping("/admin-list")
-    @PreAuthorize("hasAuthority('admin')")
+    @PreAuthorize("hasRole('ADMIN')")
     public String adminList() {
         return "管理员列表";
     }
 
     @GetMapping("/user-list")
-    @PreAuthorize("hasAuthority('user')")
+    @PreAuthorize("hasRole('USER')")
     public String userList() {
         return "用户列表";
     }