How to implement an OAuth service using Spring Boot?

To implement an OAuth service using Spring Boot, you can follow these steps:

1. I only need one option: “pom.xml”

<dependencies>
    <!-- Spring Security -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-security</artifactId>
    </dependency>
    <!-- OAuth2 -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-oauth2-client</artifactId>
    </dependency>
</dependencies>

1. properties file for an application

# OAuth2 Client Configuration
spring.security.oauth2.client.registration.<client-id>.client-id=<client-id>
spring.security.oauth2.client.registration.<client-id>.client-secret=<client-secret>
spring.security.oauth2.client.registration.<client-id>.redirect-uri=http://localhost:8080/login/oauth2/code/<client-id>
spring.security.oauth2.client.provider.<client-id>.authorization-uri=<authorization-uri>
spring.security.oauth2.client.provider.<client-id>.token-uri=<token-uri>
spring.security.oauth2.client.provider.<client-id>.jwk-set-uri=<jwk-set-uri>
spring.security.oauth2.client.provider.<client-id>.user-info-uri=<user-info-uri>
spring.security.oauth2.client.provider.<client-id>.user-name-attribute=<user-name-attribute>

Among them, is the ID of the OAuth client, is the secret key of the OAuth client, is the URL of the authorization page, is the URL of the token, is the URL of the JWK Set, is the URL of the user information, is the attribute of the user’s name.

1. Handler for successful authentication
2. whenAuthenticationIsSuccessful()

public class OAuth2AuthenticationSuccessHandler implements AuthenticationSuccessHandler {

    @Override
    public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws IOException, ServletException {
        // 处理授权成功后的逻辑
        // ...
    }
}

1. Configuration for security

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private OAuth2AuthenticationSuccessHandler oauth2AuthenticationSuccessHandler;

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
            .authorizeRequests()
                .antMatchers("/login").permitAll()
                .anyRequest().authenticated()
                .and()
            .oauth2Login()
                .successHandler(oauth2AuthenticationSuccessHandler);
    }
}

1. This is a Spring Boot application.
2. Activate OAuth2 Client

@SpringBootApplication
@EnableOAuth2Client
public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

1. Handler for successful OAuth2 authentication
2. when the authentication is successful.

The above are the basic steps to implement an OAuth service using Spring Boot. The specific implementation details and configurations should be adjusted according to the specific requirements and demands of the OAuth service provider.