Support Serialization in Exceptions

Issue gh-16276

web/src/main/java/org/springframework/security/web/firewall/RequestRejectedException.java

@@ -16,11 +16,16 @@
 
 package org.springframework.security.web.firewall;
 
+import java.io.Serial;
+
 /**
  * @author Luke Taylor
  */
 public class RequestRejectedException extends RuntimeException {
 
+	@Serial
+	private static final long serialVersionUID = 7226768874760909859L;
+
 	public RequestRejectedException(String message) {
 		super(message);
 	}

web/src/main/java/org/springframework/security/web/server/authentication/SwitchUserWebFilter.java

@@ -353,6 +353,7 @@ public class SwitchUserWebFilter implements WebFilter {
 		this.switchUserMatcher = switchUserMatcher;
 	}
 
+	@SuppressWarnings("serial")
 	private static class SwitchUserAuthenticationException extends RuntimeException {
 
 		SwitchUserAuthenticationException(AuthenticationException exception) {

web/src/main/java/org/springframework/security/web/server/firewall/ServerExchangeRejectedException.java

@@ -16,6 +16,8 @@
 
 package org.springframework.security.web.server.firewall;
 
+import java.io.Serial;
+
 /**
  * Thrown when a {@link org.springframework.web.server.ServerWebExchange} is rejected.
  *
@@ -24,6 +26,9 @@ package org.springframework.security.web.server.firewall;
  */
 public class ServerExchangeRejectedException extends RuntimeException {
 
+	@Serial
+	private static final long serialVersionUID = 904984955691607748L;
+
 	public ServerExchangeRejectedException(String message) {
 		super(message);
 	}