Receive/Send MultiRow data along with file in SpringBoot Controller

Question

I want to receive multi rows in spring boot controller, tried different approached but unable to do it. i am testing with postman.

Controller

@PostMapping(URLConstant.URL_SC_ATTACHMENT_POST)
public ResponseEntity<ApiResponse> storeFile(@RequestParam("attachmentDto") List<BudgetSceAttachmentDto> attachmentDto) throws IOException {
    System.out.println(attachmentDto);
    return ResponseUtil.getResponse(HttpStatus.OK, MsgConstant.BUDGET_MSG_FILE_UPLOADED, null);

}

DTO

private Integer versionId;

private String fileName;

private String pathUploadedFile;

private String uploadedFileName;

private MultipartFile file;

Answer 1

First of all, request's content-type should be multipart/form-data.

Then Let's simplify this problem - check upload multiple file first.

@PostMapping(URLConstant.URL_SC_ATTACHMENT_POST)
public ResponseEntity<ApiResponse> storeFile(@RequestParam MultipartFile[] files) throws IOException {
    Assert.isTrue(files.length == 2, "files length should be 2");
    System.out.println(files.length);
    return ResponseUtil.getResponse(HttpStatus.OK, MsgConstant.BUDGET_MSG_FILE_UPLOADED, null);
}

If it works well, now time to bring the DTO again.

@PostMapping(URLConstant.URL_SC_ATTACHMENT_POST)
public ResponseEntity<ApiResponse> storeFile(@ModelAttribute List<BudgetSceAttachmentDto> params) throws IOException {
    Assert.isTrue(params.length == 2, "files length should be 2");
    System.out.println(params.length);
    return ResponseUtil.getResponse(HttpStatus.OK, MsgConstant.BUDGET_MSG_FILE_UPLOADED, null);
}