Very much a work in progress towards a clean SB 3.2.x

pom.xml

@@ -31,7 +31,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>3.2.3</version>
+        <version>3.2.4</version>
         <relativePath /> <!-- lookup parent from repository -->
     </parent>
 

src/main/java/com/aidanwhiteley/books/controller/RestApiExceptionHandler.java

@@ -7,6 +7,7 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
 import org.springframework.http.HttpStatusCode;
 import org.springframework.http.ResponseEntity;
 import org.springframework.security.access.AccessDeniedException;
@@ -18,6 +19,7 @@
 import org.springframework.web.context.request.WebRequest;
 import org.springframework.web.method.annotation.MethodArgumentTypeMismatchException;
 import org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler;
+import org.springframework.web.servlet.resource.NoResourceFoundException;
 
 import static org.springframework.http.HttpStatus.*;
 
@@ -107,6 +109,11 @@ public ApiExceptionData handleDefaultExceptions(Exception ex, WebRequest request
     protected ResponseEntity<Object> handleExceptionInternal(Exception ex, Object body, HttpHeaders headers,
                                                              HttpStatusCode status, WebRequest request) {
 
+        if (ex instanceof NoResourceFoundException) {
+            API_LOGGER.info("Resource not found. This may well be expected: " + ex.getMessage());
+            return new ResponseEntity<>(HttpStatusCode.valueOf(NOT_FOUND.ordinal()));
+        }
+
         API_LOGGER.error(
                 "The Spring framework rather than the application handled the following exception: {}", ex.getMessage(),
                 ex);