Merge pull request #17863 from peterjurkovic

* gh-17863:
  Polish "Make logError() in AbstractErrorWebExceptionHandler overrideable"
  Make logError() in AbstractErrorWebExceptionHandler overrideable

Closes gh-17863

Author: wilkinsona

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/reactive/error/AbstractErrorWebExceptionHandler.java

@@ -273,7 +273,16 @@ private boolean isDisconnectedClientErrorMessage(String message) {
 		return (message.contains("broken pipe") || message.contains("connection reset by peer"));
 	}
 
-	private void logError(ServerRequest request, ServerResponse response, Throwable throwable) {
+	/**
+	 * Logs the {@code throwable} error for the given {@code request} and {@code response}
+	 * exchange. The default implementation logs all errors at debug level. Additionally,
+	 * any internal server error (500) is logged at error level.
+	 * @param request the request that was being handled
+	 * @param response the response that was being sent
+	 * @param throwable the error to be logged
+	 * @since 2.2.0
+	 */
+	protected void logError(ServerRequest request, ServerResponse response, Throwable throwable) {
 		if (logger.isDebugEnabled()) {
 			logger.debug(request.exchange().getLogPrefix() + formatError(throwable, request));
 		}