BAEL-5717 - Removing deprecated Keycloak Adapter and use Spring OAuth2 resource server instead (#12665)

spring-boot-modules/spring-boot-testing-2/src/main/java/com/baeldung/keycloaktestcontainers/configuration/KeycloakConfiguration.java

@@ -1,14 +0,0 @@
-package com.baeldung.keycloaktestcontainers.configuration;
-
-import org.keycloak.adapters.springboot.KeycloakSpringBootConfigResolver;
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Configuration;
-
-@Configuration
-public class KeycloakConfiguration {
-
-    @Bean
-    public KeycloakSpringBootConfigResolver keycloakConfigResolver() {
-        return new KeycloakSpringBootConfigResolver();
-    }
-}

spring-boot-modules/spring-boot-testing-2/src/main/java/com/baeldung/keycloaktestcontainers/configuration/KeycloakSecurityConfiguration.java

@@ -1,46 +0,0 @@
-package com.baeldung.keycloaktestcontainers.configuration;
-
-import org.keycloak.adapters.springsecurity.KeycloakConfiguration;
-import org.keycloak.adapters.springsecurity.config.KeycloakWebSecurityConfigurerAdapter;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
-import org.springframework.context.annotation.Bean;
-import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
-import org.springframework.security.config.annotation.web.builders.HttpSecurity;
-import org.springframework.security.web.authentication.session.NullAuthenticatedSessionStrategy;
-import org.springframework.security.web.authentication.session.SessionAuthenticationStrategy;
-
-@KeycloakConfiguration
-@ConditionalOnProperty(name = "keycloak.enabled", havingValue = "true", matchIfMissing = true)
-public class KeycloakSecurityConfiguration extends KeycloakWebSecurityConfigurerAdapter {
-
-    @Autowired
-    public void configureGlobal(AuthenticationManagerBuilder auth) {
-        auth.authenticationProvider(keycloakAuthenticationProvider());
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Bean
-    @Override
-    protected SessionAuthenticationStrategy sessionAuthenticationStrategy() {
-        return new NullAuthenticatedSessionStrategy();
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    @Override
-    protected void configure(HttpSecurity http) throws Exception {
-        super.configure(http);
-
-        http.csrf()
-            .disable()
-            .cors()
-            .and()
-            .authorizeRequests()
-            .anyRequest()
-            .authenticated();
-    }
-}

spring-boot-modules/spring-boot-testing-2/src/main/java/com/baeldung/keycloaktestcontainers/configuration/WebSecurityConfiguration.java

@@ -0,0 +1,34 @@
+package com.baeldung.keycloaktestcontainers.configuration;
+
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+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.configurers.oauth2.server.resource.OAuth2ResourceServerConfigurer;
+import org.springframework.security.web.SecurityFilterChain;
+import org.springframework.security.web.authentication.session.NullAuthenticatedSessionStrategy;
+import org.springframework.security.web.authentication.session.SessionAuthenticationStrategy;
+
+@Configuration
+@ConditionalOnProperty(name = "keycloak.enabled", havingValue = "true", matchIfMissing = true)
+public class WebSecurityConfiguration {
+
+    @Bean
+    protected SessionAuthenticationStrategy sessionAuthenticationStrategy() {
+        return new NullAuthenticatedSessionStrategy();
+    }
+
+    @Bean
+    public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
+
+        return http.csrf()
+            .disable()
+            .cors()
+            .and()
+            .authorizeHttpRequests(auth -> auth.anyRequest()
+                .authenticated())
+            .oauth2ResourceServer(OAuth2ResourceServerConfigurer::jwt)
+            .build();
+
+    }
+}

spring-boot-modules/spring-boot-testing-2/src/main/resources/application.properties

@@ -1,4 +1,2 @@
 keycloak.enabled=true
-keycloak.realm=baeldung
-keycloak.resource=baeldung-api
-keycloak.auth-server-url=http://localhost:8081
+spring.security.oauth2.resourceserver.jwt.issuer-uri=http://localhost:8180/auth/realms/baeldung-api