Package org.springframework.web.bind.annotation

Annotation Interface RequestPart

@Target(PARAMETER) @Retention(RUNTIME) @Documented public @interface RequestPart
Annotation that can be used to associate the part of a "multipart/form-data" request with a method argument.

Supported method argument types include MultipartFile in conjunction with Spring's MultipartResolver abstraction, jakarta.servlet.http.Part in conjunction with Servlet multipart requests, or otherwise for any other method argument, the content of the part is passed through an HttpMessageConverter taking into consideration the 'Content-Type' header of the request part. This is analogous to what @RequestBody does to resolve an argument based on the content of a non-multipart regular request.

Note that @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 or raw MultipartFile / Part, @RequestParam relies on type conversion via a registered Converter or PropertyEditor while RequestPart relies on HttpMessageConverters taking into consideration the 'Content-Type' header of the request part. RequestParam is likely to be used with name-value form fields while RequestPart is likely to be used with parts containing more complex content e.g. JSON, XML).

Since:
3.1
Author:
Rossen Stoyanchev, Arjen Poutsma, Sam Brannen
See Also:

  • Optional Element Summary

    Optional Elements
    Modifier and Type
    Optional Element
    Description
    String
    name
    The name of the part in the "multipart/form-data" request to bind to.
    boolean
    required
    Whether the part is required.
    String
    value
    Alias for name().

  • Element Details

    • value

      @AliasFor("name") String value
      Alias for name().
      Default:
      ""

    • name

      @AliasFor("value") String name
      The name of the part in the "multipart/form-data" request to bind to.
      Since:
      4.2
      Default:
      ""

    • required

      boolean required
      Whether the part is required.

      Defaults to true, leading to an exception being thrown if the part is missing in the request. Switch this to false if you prefer a null value if the part is not present in the request.

      Default:
      true