Adding OAuth2ClientContextFilter to Spring Security Filter chain to catch…

Adding OAuth2ClientContextFilter to Spring Security Filter chain to catch "UserRedirectRequiredException" and redirect user to Google login page accordingly.

src/main/java/com/github/fromi/openidconnect/security/SecurityConfiguration.java

@@ -2,12 +2,12 @@ package com.github.fromi.openidconnect.security;
 
 import static org.springframework.http.HttpMethod.GET;
 
-import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Bean;
 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;
+import org.springframework.security.oauth2.client.filter.OAuth2ClientContextFilter;
 import org.springframework.security.web.AuthenticationEntryPoint;
 import org.springframework.security.web.authentication.LoginUrlAuthenticationEntryPoint;
 import org.springframework.security.web.authentication.preauth.AbstractPreAuthenticatedProcessingFilter;
@@ -28,9 +28,14 @@ public class SecurityConfiguration extends WebSecurityConfigurerAdapter {
         return new OpenIDConnectAuthenticationFilter(LOGIN_URL);
     }
 
+    @Bean
+    public OAuth2ClientContextFilter oAuth2ClientContextFilter() {
+        return new OAuth2ClientContextFilter();
+    }
     @Override
     protected void configure(HttpSecurity http) throws Exception {
-        http.addFilterAfter(openIdConnectAuthenticationFilter(), AbstractPreAuthenticatedProcessingFilter.class)
+        http.addFilterAfter(oAuth2ClientContextFilter(), AbstractPreAuthenticatedProcessingFilter.class)
+                .addFilterAfter(openIdConnectAuthenticationFilter(), OAuth2ClientContextFilter.class)
                 .exceptionHandling().authenticationEntryPoint(authenticationEntryPoint())
                 .and().authorizeRequests()
                 .antMatchers(GET, "/").permitAll()