organise oauth2 request code

spring-5-security-oauth/src/main/java/com/baeldung/oauth2/CustomRequestSecurityConfig.java

@@ -0,0 +1,119 @@
+package com.baeldung.oauth2;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.PropertySource;
+import org.springframework.core.env.Environment;
+import org.springframework.http.converter.FormHttpMessageConverter;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
+import org.springframework.security.config.oauth2.client.CommonOAuth2Provider;
+import org.springframework.security.oauth2.client.endpoint.DefaultAuthorizationCodeTokenResponseClient;
+import org.springframework.security.oauth2.client.endpoint.OAuth2AccessTokenResponseClient;
+import org.springframework.security.oauth2.client.endpoint.OAuth2AuthorizationCodeGrantRequest;
+import org.springframework.security.oauth2.client.http.OAuth2ErrorResponseErrorHandler;
+import org.springframework.security.oauth2.client.registration.ClientRegistration;
+import org.springframework.security.oauth2.client.registration.ClientRegistrationRepository;
+import org.springframework.security.oauth2.client.registration.InMemoryClientRegistrationRepository;
+import org.springframework.security.oauth2.client.web.AuthorizationRequestRepository;
+import org.springframework.security.oauth2.client.web.HttpSessionOAuth2AuthorizationRequestRepository;
+import org.springframework.security.oauth2.core.endpoint.OAuth2AuthorizationRequest;
+import org.springframework.security.oauth2.core.http.converter.OAuth2AccessTokenResponseHttpMessageConverter;
+import org.springframework.web.client.RestTemplate;
+
+import com.baeldung.oauth2request.CustomAuthorizationRequestResolver;
+import com.baeldung.oauth2request.CustomRequestEntityConverter;
+import com.baeldung.oauth2request.CustomTokenResponseConverter;
+
+//@Configuration
+@PropertySource("application-oauth2.properties")
+public class CustomRequestSecurityConfig extends WebSecurityConfigurerAdapter {
+
+    @Override
+    protected void configure(HttpSecurity http) throws Exception {
+        http.authorizeRequests()
+            .antMatchers("/oauth_login", "/loginFailure", "/")
+            .permitAll()
+            .anyRequest()
+            .authenticated()
+            .and()
+            .oauth2Login()
+            .loginPage("/oauth_login")
+            .authorizationEndpoint()
+                        .authorizationRequestResolver( new CustomAuthorizationRequestResolver(clientRegistrationRepository(),"/oauth2/authorize-client"))
+
+            .baseUri("/oauth2/authorize-client")
+            .authorizationRequestRepository(authorizationRequestRepository())
+            .and()
+            .tokenEndpoint()
+            .accessTokenResponseClient(accessTokenResponseClient())
+            .and()
+            .defaultSuccessUrl("/loginSuccess")
+            .failureUrl("/loginFailure");
+    }
+
+    @Bean
+    public AuthorizationRequestRepository<OAuth2AuthorizationRequest> authorizationRequestRepository() {
+        return new HttpSessionOAuth2AuthorizationRequestRepository();
+    }
+
+    @Bean
+    public OAuth2AccessTokenResponseClient<OAuth2AuthorizationCodeGrantRequest> accessTokenResponseClient() {
+        DefaultAuthorizationCodeTokenResponseClient accessTokenResponseClient = new DefaultAuthorizationCodeTokenResponseClient();
+        accessTokenResponseClient.setRequestEntityConverter(new CustomRequestEntityConverter());
+        
+        OAuth2AccessTokenResponseHttpMessageConverter tokenResponseHttpMessageConverter = new OAuth2AccessTokenResponseHttpMessageConverter();
+        tokenResponseHttpMessageConverter.setTokenResponseConverter(new CustomTokenResponseConverter());
+        RestTemplate restTemplate = new RestTemplate(Arrays.asList(new FormHttpMessageConverter(), tokenResponseHttpMessageConverter));
+        restTemplate.setErrorHandler(new OAuth2ErrorResponseErrorHandler());
+        accessTokenResponseClient.setRestOperations(restTemplate);
+        return accessTokenResponseClient;
+    }
+
+    
+    // additional configuration for non-Spring Boot projects
+    private static List<String> clients = Arrays.asList("google", "facebook");
+
+    //@Bean
+    public ClientRegistrationRepository clientRegistrationRepository() {
+        List<ClientRegistration> registrations = clients.stream()
+            .map(c -> getRegistration(c))
+            .filter(registration -> registration != null)
+            .collect(Collectors.toList());
+
+        return new InMemoryClientRegistrationRepository(registrations);
+    }
+
+    private static String CLIENT_PROPERTY_KEY = "spring.security.oauth2.client.registration.";
+
+    @Autowired
+    private Environment env;
+
+    private ClientRegistration getRegistration(String client) {
+        String clientId = env.getProperty(CLIENT_PROPERTY_KEY + client + ".client-id");
+
+        if (clientId == null) {
+            return null;
+        }
+
+        String clientSecret = env.getProperty(CLIENT_PROPERTY_KEY + client + ".client-secret");
+        if (client.equals("google")) {
+            return CommonOAuth2Provider.GOOGLE.getBuilder(client)
+                .clientId(clientId)
+                .clientSecret(clientSecret)
+                .build();
+        }
+        if (client.equals("facebook")) {
+            return CommonOAuth2Provider.FACEBOOK.getBuilder(client)
+                .clientId(clientId)
+                .clientSecret(clientSecret)
+                .build();
+        }
+        return null;
+    }
+
+}

spring-5-security-oauth/src/main/java/com/baeldung/oauth2/SecurityConfig.java

@@ -9,22 +9,18 @@ import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.PropertySource;
 import org.springframework.core.env.Environment;
-import org.springframework.http.converter.FormHttpMessageConverter;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
 import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
 import org.springframework.security.config.oauth2.client.CommonOAuth2Provider;
 import org.springframework.security.oauth2.client.endpoint.DefaultAuthorizationCodeTokenResponseClient;
 import org.springframework.security.oauth2.client.endpoint.OAuth2AccessTokenResponseClient;
 import org.springframework.security.oauth2.client.endpoint.OAuth2AuthorizationCodeGrantRequest;
-import org.springframework.security.oauth2.client.http.OAuth2ErrorResponseErrorHandler;
 import org.springframework.security.oauth2.client.registration.ClientRegistration;
 import org.springframework.security.oauth2.client.registration.ClientRegistrationRepository;
 import org.springframework.security.oauth2.client.registration.InMemoryClientRegistrationRepository;
 import org.springframework.security.oauth2.client.web.AuthorizationRequestRepository;
 import org.springframework.security.oauth2.client.web.HttpSessionOAuth2AuthorizationRequestRepository;
 import org.springframework.security.oauth2.core.endpoint.OAuth2AuthorizationRequest;
-import org.springframework.security.oauth2.core.http.converter.OAuth2AccessTokenResponseHttpMessageConverter;
-import org.springframework.web.client.RestTemplate;
 
 @Configuration
 @PropertySource("application-oauth2.properties")
@@ -41,8 +37,6 @@ public class SecurityConfig extends WebSecurityConfigurerAdapter {
             .oauth2Login()
             .loginPage("/oauth_login")
             .authorizationEndpoint()
-                        .authorizationRequestResolver( new CustomAuthorizationRequestResolver(clientRegistrationRepository(),"/oauth2/authorize-client"))
-
             .baseUri("/oauth2/authorize-client")
             .authorizationRequestRepository(authorizationRequestRepository())
             .and()
@@ -61,13 +55,6 @@ public class SecurityConfig extends WebSecurityConfigurerAdapter {
     @Bean
     public OAuth2AccessTokenResponseClient<OAuth2AuthorizationCodeGrantRequest> accessTokenResponseClient() {
         DefaultAuthorizationCodeTokenResponseClient accessTokenResponseClient = new DefaultAuthorizationCodeTokenResponseClient();
-        accessTokenResponseClient.setRequestEntityConverter(new CustomRequestEntityConverter());
-        
-        OAuth2AccessTokenResponseHttpMessageConverter tokenResponseHttpMessageConverter = new OAuth2AccessTokenResponseHttpMessageConverter();
-        tokenResponseHttpMessageConverter.setTokenResponseConverter(new CustomTokenResponseConverter());
-        RestTemplate restTemplate = new RestTemplate(Arrays.asList(new FormHttpMessageConverter(), tokenResponseHttpMessageConverter));
-        restTemplate.setErrorHandler(new OAuth2ErrorResponseErrorHandler());
-        accessTokenResponseClient.setRestOperations(restTemplate);
         return accessTokenResponseClient;
     }
 

spring-5-security-oauth/src/main/java/com/baeldung/oauth2request/CustomAuthorizationRequestResolver.java

@@ -1,4 +1,4 @@
-package com.baeldung.oauth2;
+package com.baeldung.oauth2request;
 
 import java.util.HashMap;
 import java.util.Map;

spring-5-security-oauth/src/main/java/com/baeldung/oauth2request/CustomRequestEntityConverter.java

@@ -1,4 +1,4 @@
-package com.baeldung.oauth2;
+package com.baeldung.oauth2request;
 
 import org.springframework.core.convert.converter.Converter;
 import org.springframework.http.RequestEntity;

spring-5-security-oauth/src/main/java/com/baeldung/oauth2request/CustomTokenResponseConverter.java

@@ -1,4 +1,4 @@
-package com.baeldung.oauth2;
+package com.baeldung.oauth2request;
 
 import java.util.Arrays;
 import java.util.Collections;

spring-5-security-oauth/src/main/java/com/baeldung/oauth2request/LinkedinTokenResponseConverter.java

@@ -1,4 +1,4 @@
-package com.baeldung.oauth2;
+package com.baeldung.oauth2request;
 
 import java.util.Map;