Get 404 when i call api endpoint with a trailing "/" in springboot 3

February 22, 2024

I have exposed an api using springboot.
It accepts HTTP POST method. here is the code

@RequestMapping(value = "upload/config_data", method = RequestMethod.POST, consumes = MediaType.MULTIPART_FORM_DATA)
public String uploadConfigData(@RequestParam("inFile") MultipartFile inFile,
        @RequestParam("rowData") String rowData) throws ServiceException, DAOException {
    return extConfigApiService.uploadConfigData(inFile, rowData);
}

in springboot 2.x I could call this endpoint with a trailing slash and it would work fine http://localhost:8000/upload/config_data/

I upgraded to springboot 3.1.4 and now when I call the same endpoint I get a 404 response.

When I remove the trailing "/" it is working.

Is there a way to make it work even with the trailing "/"?
Please help

>Solution :

In Spring Boot 2.x, trailing slashes were automatically ignored by default, allowing endpoints to be accessed with or without the trailing slash.

In Spring Boot 3.x you need to add a configuration to allow your trailing slashe

@Configuration
public class WebConfiguration implements WebMvcConfigurer {

@Override
public void configurePathMatch(PathMatchConfigurer configurer) {
  configurer.setUseTrailingSlashMatch(true);
  }
}

check documentation for more information :

https://www.baeldung.com/spring-boot-3-url-matching