I've seen many sources and also few questions on SO but didn't found solution.

I want to send to my Spring app POST/PUT-requests that contain JSON-object Car and attached file.

For the moment I have a CarController which correctly works with JSON-objects

@PutMapping("/{id}/update")
public updateCar(@PathVariable(value = "id") Long carId, @Validated @RequestBody Car car) throws ResourceNotFoundException {
    // I can work with received car
}

I also have a FileController which correctly works with file

@PostMapping("/upload")
public uploadFiles(@RequestParam("file") MultipartFile file) throws IOException {
    // I can work with received file
}

But how should my method look like to be able to work with both car and file? This code doesn't provide me any of car or file.

@PutMapping("/{id}/update")
public updateCar(@PathVariable(value = "id") Long carId, @Validated @RequestBody Car car, @RequestParam("file") MultipartFile file) throws ResourceNotFoundException, IOException {
    // can not work neither with car nor with file
}

Separate controllers work well during test from Postman. But when I try third code I got these results:

CodePudding user response：

You can use consumes = { MediaType.MULTIPART_FORM_DATA_VALUE } field of @RequestMapping annotation and @RequestPart annotation for method parameters:

ResponseEntity<> foo(@RequestPart ParType value, @RequestPart MultipartFile anotherChoice) {
...

CodePudding user response：

Yes, I

• use Body>form-data
• when issues:
  • display Content-Type column.
  • set Content-Type per part.

CodePudding user response：

There is nothing wrong with your code and it could work as it is.

You could eventually improve its readability by using @RequestPart instead of @RequestParam and @RequestBody when it's a multipart request.

You can find more details about multipart requests in this article

Check the box "Content-Type" and the new column will appear:

And finally, define the content type of each part.