SpringBoot's @MultipartConfig maxFileSize not taking effect

Question

I have a controller with a MultipartConfig annotation (a snippet of which is show below):

@RestController
@RequestMapping(\"packages\")
@MultipartCo         


        

Answer 1

For setting custom limits for multipart uploads, the below properties are to be used(for a sample size of 30MB):

spring.http.multipart.max-file-size=30MB
spring.http.multipart.max-request-size=30MB

In our company's projects, I found that one of them was on Spring Boot version 1.3.5, so for versions < 1.4 you should use

multipart.max-file-size=30MB
multipart.max-request-size=30MB

From the docs(v1.4.0):

Spring Boot embraces the Servlet 3 javax.servlet.http.Part API to support uploading files. By default Spring Boot configures Spring MVC with a maximum file of 1MB per file and a maximum of 10MB of file data in a single request. You may override these values, as well as the location to which intermediate data is stored (e.g., to the /tmp directory) and the threshold past which data is flushed to disk by using the properties exposed in the MultipartProperties class. If you want to specify that files be unlimited, for example, set the spring.http.multipart.max-file-size property to -1.

The multipart support is helpful when you want to receive multipart encoded file data as a @RequestParam-annotated parameter of type MultipartFile in a Spring MVC controller handler method.

Same docs for version 1.3.8:

If you want to specify that files be unlimited, for example, set the multipart.maxFileSize property to -1.