MultipartInterceptor class

Interceptor that automatically handles multipart/form-data requests.

Features:

• Auto-detects File or List<File> in Map data
• Converts to FormData and sets Content-Type to multipart/form-data
• Falls back to defaultContentType for regular data (default: application/json)
• Respects explicitly set Content-Type in request options

Example:

// Just pass File in your data - interceptor handles the rest
await client.post('/upload', data: {
  'file': File('/path/to/image.jpg'),
  'name': 'my-image',
});

Constructors

MultipartInterceptor({String? defaultContentType = 'application/json'})

Creates a MultipartInterceptor.

const

Properties

defaultContentType → String?

The default content type for non-file requests.

final

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

onError(DioException err, ErrorInterceptorHandler handler) → void

Called when an exception was occurred during the request.

inherited

onRequest(RequestOptions options, RequestInterceptorHandler handler) → void

Called when the request is about to be sent.

onResponse(Response response, ResponseInterceptorHandler handler) → void

Called when the response is about to be resolved.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited