File upload working under Jetty but not under Tomcat

Question

I have a web application with spring in which I do some file upload. Under eclipse, using Jetty (the maven plugin) it works perfectly. But when I deploy the application unde

Answer 1

Use @RequestPart instead of @RequestParam.

From the source:

Annotation that can be used to associate the part of a "multipart/form-data" request with a method argument. Supported method argument types include {@link MultipartFile} in conjunction with Spring's {@link MultipartResolver} abstraction, {@code javax.servlet.http.Part} in conjunction with Servlet 3.0 multipart requests, or otherwise for any other method argument, the content of the part is passed through an {@link HttpMessageConverter} taking into consideration the 'Content-Type' header of the request part. This is analogous to what @{@link RequestBody} does to resolve an argument based on the content of a non-multipart regular request.

Note that @{@link RequestParam} annotation can also be used to associate the part of a "multipart/form-data" request with a method argument supporting the same method argument types. The main difference is that when the method argument is not a String, @{@link RequestParam} relies on type conversion via a registered {@link Converter} or {@link PropertyEditor} while @{@link RequestPart} relies on {@link HttpMessageConverter}s taking into consideration the 'Content-Type' header of the request part. @{@link RequestParam} is likely to be used with name-value form fields while @{@link RequestPart} is likely to be used with parts containing more complex content (e.g. JSON, XML).

Answer 2

Thanks to @Bart I was able to find the following simple solution :

In the intercepting method, use @ModelAttribute instead of @RequestParam :

@RequestMapping(value = IMPORT_PAGE, method = RequestMethod.POST)
public String recieveFile(@RequestParam("importType") String importType,
        @ModelAttribute("file") UploadedFile uploadedFile, final HttpSession session)
{
    MultipartFile multipartFile = uploadedFile.getFile();

Where UploadedFile is the following class :

public class UploadedFile
{
    private String type;

    private MultipartFile file;

    public String getType()
    {
        return type;
    }

    public void setType(String type)
    {
        this.type = type;
    }

    public void setFile(MultipartFile file)
    {
        this.file = file;
    }

    public MultipartFile getFile()
    {
        return file;
    }
}

And it's working !!

Thanks everyone for your help.