Add PathPatterRequestMatcher

Closes gh-16429
Clsoes gh-16430

config/src/main/java/org/springframework/security/config/annotation/web/AbstractRequestMatcherRegistry.java

@@ -264,11 +264,13 @@ private RequestMatcher resolve(AntPathRequestMatcher ant, MvcRequestMatcher mvc,
 	}
 
 	private static String computeErrorMessage(Collection<? extends ServletRegistration> registrations) {
-		String template = "This method cannot decide whether these patterns are Spring MVC patterns or not. "
-				+ "If this endpoint is a Spring MVC endpoint, please use requestMatchers(MvcRequestMatcher); "
-				+ "otherwise, please use requestMatchers(AntPathRequestMatcher).\n\n"
-				+ "This is because there is more than one mappable servlet in your servlet context: %s.\n\n"
-				+ "For each MvcRequestMatcher, call MvcRequestMatcher#setServletPath to indicate the servlet path.";
+		String template = """
+				This method cannot decide whether these patterns are Spring MVC patterns or not. \
+				This is because there is more than one mappable servlet in your servlet context: %s.
+
+				To address this, please create one PathPatternRequestMatcher.Builder#servletPath for each servlet that has \
+				authorized endpoints and use them to construct request matchers manually.
+				""";
 		Map<String, Collection<String>> mappings = new LinkedHashMap<>();
 		for (ServletRegistration registration : registrations) {
 			mappings.put(registration.getClassName(), registration.getMappings());

docs/modules/ROOT/pages/servlet/authorization/authorize-http-requests.adoc

@@ -577,15 +577,11 @@ http {
 ======
 
 [[match-by-mvc]]
-=== Using an MvcRequestMatcher
+=== Matching by Servlet Path
 
 Generally speaking, you can use `requestMatchers(String)` as demonstrated above.
 
-However, if you map Spring MVC to a different servlet path, then you need to account for that in your security configuration.
-
-For example, if Spring MVC is mapped to `/spring-mvc` instead of `/` (the default), then you may have an endpoint like `/spring-mvc/my/controller` that you want to authorize.
-
-You need to use `MvcRequestMatcher` to split the servlet path and the controller path in your configuration like so:
+However, if you have authorization rules from multiple servlets, you need to specify those:
 
 .Match by MvcRequestMatcher
 [tabs]
@@ -594,16 +590,15 @@ Java::
 +
 [source,java,role="primary"]
 ----
-@Bean
-MvcRequestMatcher.Builder mvc(HandlerMappingIntrospector introspector) {
-	return new MvcRequestMatcher.Builder(introspector).servletPath("/spring-mvc");
-}
+import static org.springframework.security.web.servlet.util.matcher.PathPatternRequestMatcher.withDefaults;
 
 @Bean
-SecurityFilterChain appEndpoints(HttpSecurity http, MvcRequestMatcher.Builder mvc) {
+SecurityFilterChain appEndpoints(HttpSecurity http) {
+	PathPatternRequestMatcher.Builder mvc = withDefaults().servletPath("/spring-mvc");
 	http
         .authorizeHttpRequests((authorize) -> authorize
-            .requestMatchers(mvc.pattern("/my/controller/**")).hasAuthority("controller")
+            .requestMatchers(mvc.matcher("/admin/**")).hasAuthority("admin")
+            .requestMatchers(mvc.matcher("/my/controller/**")).hasAuthority("controller")
             .anyRequest().authenticated()
         );
 
@@ -616,34 +611,35 @@ Kotlin::
 [source,kotlin,role="secondary"]
 ----
 @Bean
-fun mvc(introspector: HandlerMappingIntrospector): MvcRequestMatcher.Builder =
-    MvcRequestMatcher.Builder(introspector).servletPath("/spring-mvc");
-
-@Bean
-fun appEndpoints(http: HttpSecurity, mvc: MvcRequestMatcher.Builder): SecurityFilterChain =
+fun appEndpoints(http: HttpSecurity): SecurityFilterChain {
     http {
         authorizeHttpRequests {
-            authorize(mvc.pattern("/my/controller/**"), hasAuthority("controller"))
+            authorize("/spring-mvc", "/admin/**", hasAuthority("admin"))
+            authorize("/spring-mvc", "/my/controller/**", hasAuthority("controller"))
             authorize(anyRequest, authenticated)
         }
     }
+}
 ----
 
 Xml::
 +
 [source,xml,role="secondary"]
 ----
 <http>
+    <intercept-url servlet-path="/spring-mvc" pattern="/admin/**" access="hasAuthority('admin')"/>
     <intercept-url servlet-path="/spring-mvc" pattern="/my/controller/**" access="hasAuthority('controller')"/>
     <intercept-url pattern="/**" access="authenticated"/>
 </http>
 ----
 ======
 
-This need can arise in at least two different ways:
+This is because Spring Security requires all URIs to be absolute (minus the context path).
 
-* If you use the `spring.mvc.servlet.path` Boot property to change the default path (`/`) to something else
-* If you register more than one Spring MVC `DispatcherServlet` (thus requiring that one of them not be the default path)
+[TIP]
+=====
+There are several other components that create request matchers for you like {spring-boot-api-url}org/springframework/boot/autoconfigure/security/servlet/PathRequest.html[`PathRequest#toStaticResources#atCommonLocations`]
+=====
 
 [[match-by-custom]]
 === Using a Custom Matcher

web/src/main/java/org/springframework/security/web/FilterChainProxy.java

@@ -46,6 +46,7 @@
 import org.springframework.util.Assert;
 import org.springframework.web.filter.DelegatingFilterProxy;
 import org.springframework.web.filter.GenericFilterBean;
+import org.springframework.web.filter.ServletRequestPathFilter;
 
 /**
  * Delegates {@code Filter} requests to a list of Spring-managed filter beans. As of
@@ -162,6 +163,8 @@ public class FilterChainProxy extends GenericFilterBean {
 
 	private FilterChainDecorator filterChainDecorator = new VirtualFilterChainDecorator();
 
+	private Filter springWebFilter = new ServletRequestPathFilter();
+
 	public FilterChainProxy() {
 	}
 
@@ -210,27 +213,29 @@ private void doFilterInternal(ServletRequest request, ServletResponse response,
 			throws IOException, ServletException {
 		FirewalledRequest firewallRequest = this.firewall.getFirewalledRequest((HttpServletRequest) request);
 		HttpServletResponse firewallResponse = this.firewall.getFirewalledResponse((HttpServletResponse) response);
-		List<Filter> filters = getFilters(firewallRequest);
-		if (filters == null || filters.isEmpty()) {
-			if (logger.isTraceEnabled()) {
-				logger.trace(LogMessage.of(() -> "No security for " + requestLine(firewallRequest)));
+		this.springWebFilter.doFilter(firewallRequest, firewallResponse, (r, s) -> {
+			List<Filter> filters = getFilters(firewallRequest);
+			if (filters == null || filters.isEmpty()) {
+				if (logger.isTraceEnabled()) {
+					logger.trace(LogMessage.of(() -> "No security for " + requestLine(firewallRequest)));
+				}
+				firewallRequest.reset();
+				this.filterChainDecorator.decorate(chain).doFilter(firewallRequest, firewallResponse);
+				return;
 			}
-			firewallRequest.reset();
-			this.filterChainDecorator.decorate(chain).doFilter(firewallRequest, firewallResponse);
-			return;
-		}
-		if (logger.isDebugEnabled()) {
-			logger.debug(LogMessage.of(() -> "Securing " + requestLine(firewallRequest)));
-		}
-		FilterChain reset = (req, res) -> {
 			if (logger.isDebugEnabled()) {
-				logger.debug(LogMessage.of(() -> "Secured " + requestLine(firewallRequest)));
+				logger.debug(LogMessage.of(() -> "Securing " + requestLine(firewallRequest)));
 			}
-			// Deactivate path stripping as we exit the security filter chain
-			firewallRequest.reset();
-			chain.doFilter(req, res);
-		};
-		this.filterChainDecorator.decorate(reset, filters).doFilter(firewallRequest, firewallResponse);
+			FilterChain reset = (req, res) -> {
+				if (logger.isDebugEnabled()) {
+					logger.debug(LogMessage.of(() -> "Secured " + requestLine(firewallRequest)));
+				}
+				// Deactivate path stripping as we exit the security filter chain
+				firewallRequest.reset();
+				chain.doFilter(req, res);
+			};
+			this.filterChainDecorator.decorate(reset, filters).doFilter(firewallRequest, firewallResponse);
+		});
 	}
 
 	/**
@@ -447,4 +452,23 @@ public FilterChain decorate(FilterChain original, List<Filter> filters) {
 
 	}
 
+	private static final class FirewallFilter implements Filter {
+
+		private final HttpFirewall firewall;
+
+		private FirewallFilter(HttpFirewall firewall) {
+			this.firewall = firewall;
+		}
+
+		@Override
+		public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain)
+				throws IOException, ServletException {
+			HttpServletRequest request = (HttpServletRequest) servletRequest;
+			HttpServletResponse response = (HttpServletResponse) servletResponse;
+			filterChain.doFilter(this.firewall.getFirewalledRequest(request),
+					this.firewall.getFirewalledResponse(response));
+		}
+
+	}
+
 }