Spring MultipartException: Current request is not a multipart request

This error message indicates that the current request being processed by the servlet is not a multipart request.

A multipart request is a type of HTTP request used for uploading files or sending data in multiple parts. This error usually occurs when the servlet expects a multipart request, but the received request is not in the correct format.

To resolve this issue, ensure the request sent to the servlet includes the correct content type and format for a multipart request. This can be done by using a form with the 'enctype' attribute set to 'multipart/form-data' when submitting the request.

If you are already using a form with the correct 'enctype', there might be a problem with the servlet or server configuration. Check the configuration files and settings to ensure that multipart requests are allowed and handled correctly.

Additionally, check if any filters or interceptors are modifying the request and removing the multipart data. Filters or interceptors can sometimes interfere with the request, causing this error.