добавлен пример для GitHub

discord/README.MD

@@ -1,6 +1,6 @@
 # Spring Boot + OAuth2 Discord
 
-<img alt="Spring Boot" width="auto" height="100" src="docs/spring-boot.svg">
+<img alt="Spring Boot" width="auto" height="100" src="../docs/spring-boot.svg">
 <img alt="Discord" width="auto" height="100" src="docs/discord-app.png">
 
 ## Перед запуском

docs/spring-boot.svg

@@ -1,6 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" x="0px" y="0px" viewBox="0 0 157.8 141.6"
+<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg"
-     style="enable-background:new 0 0 157.8 141.6;" xml:space="preserve">
+     x="0px" y="0px" viewBox="0 0 157.8 141.6"
+     style="enable-background:new 0 0 157.8 141.6;"
+     xml:space="preserve">
     <style type="text/css">
         .st0{fill:#6DB33F;}
         .st1{fill:#FFFFFF;}

github/README.MD

@@ -0,0 +1,33 @@
+# Spring Boot + OAuth2 GitHub
+
+<img alt="Spring Boot" width="auto" height="100" src="../docs/spring-boot.svg">
+<img alt="Discord" width="auto" height="100" src="docs/github-white.svg">
+
+## Перед запуском
+### Создание OAuth App
+Для запуска понадобиться обзавестить своим **GitHub OAuth App**.
+
+1. Переходим в [Developer settings](https://github.com/settings/developers)
+2. Создём новое OAuth приложение  
+  ![](docs/1.png)
+3. Заполняем обязательно следующие поля
+   - **Homepage URL**: `http://127.0.0.1:8080`
+   - **Authorization callback URL**: `http://127.0.0.1:8080/login/oauth2/code/github`  
+  ![](docs/2.png)
+4. Сгенерировать новый **Client secrets**  
+  ![](docs/3.png)  
+  ![](docs/4.png)
+
+### Настройка Spring
+Открываем файл `src/main/resources/application.yml` и указываем там **Client ID** и **Client secrets**:
+
+```yaml
+spring:
+  security:
+    oauth2:
+      client:
+        registration:
+          github:
+            client-id: f9bbf16cc3a93663282f
+            client-secret: 16f203668e25bfe44513d2a7b4925d62bb100783
+```

github/build.gradle

@@ -0,0 +1,21 @@
+plugins {
+    id 'org.springframework.boot' version '2.6.6'
+    id 'io.spring.dependency-management' version '1.0.11.RELEASE'
+    id 'java'
+}
+
+group = 'example.oauth2'
+version = '1.0-SNAPSHOT'
+sourceCompatibility = JavaVersion.VERSION_11
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    implementation('org.springframework.boot:spring-boot-starter-web')
+    implementation('org.springframework.boot:spring-boot-starter-thymeleaf')
+
+    implementation('org.springframework.boot:spring-boot-starter-security')
+    implementation('org.springframework.security:spring-security-oauth2-client')
+}

github/docs/github-white.svg

@@ -0,0 +1,17 @@
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+<svg version="1.1" id="svg5" xmlns="http://www.w3.org/2000/svg"
+     x="0px" y="0px" viewBox="0 0 140.75667 141.04317"
+     width="140.75667mm" height="141.04317mm">
+    <style type="text/css">
+        .p1{fill:#000000;}
+        .p2{fill:#ffffff;}
+    </style>
+    <g>
+        <path class="p1"
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github/src/main/java/example/oauth2/github/ApplicationGithub.java

@@ -0,0 +1,13 @@
+package example.oauth2.github;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class ApplicationGithub {
+
+    public static void main(String[] args) {
+        SpringApplication.run(ApplicationGithub.class, args);
+    }
+
+}

github/src/main/java/example/oauth2/github/config/MvcConfig.java

@@ -0,0 +1,15 @@
+package example.oauth2.github.config;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+@Configuration
+public class MvcConfig implements WebMvcConfigurer {
+
+    @Override
+    public void addViewControllers(ViewControllerRegistry registry) {
+        registry.addViewController("/").setViewName("index");
+        registry.addViewController("/secret").setViewName("secret");
+    }
+}

github/src/main/java/example/oauth2/github/config/WebSecurityConfig.java

@@ -0,0 +1,24 @@
+package example.oauth2.github.config;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
+import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
+
+@EnableWebSecurity
+@Configuration
+public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
+
+    @Override
+    protected void configure(HttpSecurity http) throws Exception {
+        //@formatter:off
+        http
+                .authorizeRequests()
+                    .antMatchers("/").permitAll() //Доступ разрешен всем пользователей
+                    .anyRequest().authenticated() //Все остальные страницы требуют аутентификации
+                    .and()
+                .oauth2Login()
+                ;
+        //@formatter:on
+    }
+}

github/src/main/resources/application.yml

@@ -0,0 +1,14 @@
+server:
+  address: 127.0.0.1
+  port: 8080
+
+debug: false
+
+spring:
+  security:
+    oauth2:
+      client:
+        registration:
+          github:
+            client-id: f9bbf16cc3a93663282f
+            client-secret: 16f203668e25bfe44513d2a7b4925d62bb100783

github/src/main/resources/templates/index.html

@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html lang="ru"
+      xmlns="http://www.w3.org/1999/xhtml"
+      xmlns:th="https://www.thymeleaf.org">
+<head>
+    <title>GitHub OAuth2 Example</title>
+    <link rel="icon" href="data:;base64,=">
+</head>
+<body>
+<h1>GitHub OAuth2 Example</h1>
+<hr>
+<p>
+    Home public page<br>
+    ---&gt; <a th:href="@{/secret}">Secret Page</a> &lt;---<br>
+    [ <a th:href="@{/oauth2/authorization/github}">Login GitHub</a> ]
+</p>
+</body>
+</html>

github/src/main/resources/templates/secret.html

@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<html lang="ru">
+<head>
+    <title>GitHub OAuth2 Example</title>
+    <link rel="icon" href="data:;base64,=">
+</head>
+<body>
+<h1>GitHub OAuth2 Example</h1>
+<hr>
+<p style="color: red">[TOP SECRET PAGE]</p>
+</body>
+</html>

settings.gradle

@@ -1,3 +1,4 @@
 rootProject.name = 'spring-oauth2-examples'
 
 include('discord')
+include('github')