Update exception handling config in ref-doc

Closes spring-projectsgh-1205

Author: Steve Riesenberg

docs/src/docs/asciidoc/examples/src/main/java/sample/gettingStarted/SecurityConfig.java

@@ -30,6 +30,7 @@
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.core.annotation.Order;
+import org.springframework.http.MediaType;
 import org.springframework.security.config.Customizer;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
 import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
@@ -50,6 +51,7 @@
 import org.springframework.security.provisioning.InMemoryUserDetailsManager;
 import org.springframework.security.web.SecurityFilterChain;
 import org.springframework.security.web.authentication.LoginUrlAuthenticationEntryPoint;
+import org.springframework.security.web.util.matcher.MediaTypeRequestMatcher;
 
 @Configuration
 @EnableWebSecurity
@@ -67,8 +69,10 @@ public SecurityFilterChain authorizationServerSecurityFilterChain(HttpSecurity h
 			// Redirect to the login page when not authenticated from the
 			// authorization endpoint
 			.exceptionHandling((exceptions) -> exceptions
-				.authenticationEntryPoint(
-					new LoginUrlAuthenticationEntryPoint("/login"))
+				.defaultAuthenticationEntryPointFor(
+					new LoginUrlAuthenticationEntryPoint("/login"),
+					new MediaTypeRequestMatcher(MediaType.TEXT_HTML)
+				)
 			)
 			// Accept access tokens for User Info and/or Client Registration
 			.oauth2ResourceServer((oauth2) -> oauth2.jwt(Customizer.withDefaults()));

docs/src/docs/asciidoc/examples/src/main/java/sample/userinfo/EnableUserInfoSecurityConfig.java

@@ -30,6 +30,7 @@
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.core.annotation.Order;
+import org.springframework.http.MediaType;
 import org.springframework.security.config.Customizer;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
 import org.springframework.security.config.annotation.web.configurers.oauth2.server.resource.OAuth2ResourceServerConfigurer;
@@ -50,6 +51,7 @@
 import org.springframework.security.provisioning.InMemoryUserDetailsManager;
 import org.springframework.security.web.SecurityFilterChain;
 import org.springframework.security.web.authentication.LoginUrlAuthenticationEntryPoint;
+import org.springframework.security.web.util.matcher.MediaTypeRequestMatcher;
 
 @Configuration(proxyBeanMethods = false)
 public class EnableUserInfoSecurityConfig {
@@ -64,7 +66,10 @@ public SecurityFilterChain authorizationServerSecurityFilterChain(HttpSecurity h
 		http
 			.oauth2ResourceServer(OAuth2ResourceServerConfigurer::jwt) // <2>
 			.exceptionHandling((exceptions) -> exceptions
-				.authenticationEntryPoint(new LoginUrlAuthenticationEntryPoint("/login"))
+				.defaultAuthenticationEntryPointFor(
+					new LoginUrlAuthenticationEntryPoint("/login"),
+					new MediaTypeRequestMatcher(MediaType.TEXT_HTML)
+				)
 			);
 		// @formatter:on
 

docs/src/docs/asciidoc/examples/src/main/java/sample/userinfo/jwt/JwtUserInfoMapperSecurityConfig.java

@@ -31,6 +31,7 @@
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.core.annotation.Order;
+import org.springframework.http.MediaType;
 import org.springframework.security.config.Customizer;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
 import org.springframework.security.config.annotation.web.configurers.oauth2.server.resource.OAuth2ResourceServerConfigurer;
@@ -55,6 +56,7 @@
 import org.springframework.security.provisioning.InMemoryUserDetailsManager;
 import org.springframework.security.web.SecurityFilterChain;
 import org.springframework.security.web.authentication.LoginUrlAuthenticationEntryPoint;
+import org.springframework.security.web.util.matcher.MediaTypeRequestMatcher;
 import org.springframework.security.web.util.matcher.RequestMatcher;
 
 @Configuration(proxyBeanMethods = false)
@@ -90,7 +92,10 @@ public SecurityFilterChain authorizationServerSecurityFilterChain(HttpSecurity h
 			.csrf(csrf -> csrf.ignoringRequestMatchers(endpointsMatcher))
 			.oauth2ResourceServer(OAuth2ResourceServerConfigurer::jwt) // <4>
 			.exceptionHandling((exceptions) -> exceptions
-				.authenticationEntryPoint(new LoginUrlAuthenticationEntryPoint("/login"))
+				.defaultAuthenticationEntryPointFor(
+					new LoginUrlAuthenticationEntryPoint("/login"),
+					new MediaTypeRequestMatcher(MediaType.TEXT_HTML)
+				)
 			)
 			.apply(authorizationServerConfigurer); // <5>
 		// @formatter:on