CODEWITHSUNDEEP
javaspringspring-bootopenfeign
amanda nascimento
amanda nascimento

Reputation: 5

stream is closed and Could not find acceptable representation error

i'm consuming a Api witch is returning pdf as ResponseEntity but it is not working at my api

i'm trying to get de file coming from the external api and provide it at my endpoint.

# External Api FeignClient class

@FeignClient(value = "esatCalculoFeignClient", url = "${api.url.esat}")
public interface EsatCalculoFeignClient {

    @PostMapping("/pedido/gerar")
    ResponseEntity<InputStreamResource> gerarPdfDamEsat(@Validated @RequestBody EsatCalculoTaxasRequestDto dto);

}

My service method

//geração de DAM
public InputStreamResource solicitaDamEsat(SolicitacaDamRequestDto dto) throws BusinessException, IOException {
    FormSolicitacaoAlvara entity = this.buscaEntidadePorProtocolo(dto.getProtocolo());
    EsatCalculoTaxasRequestDto esatRequestDamDto = EsatCalculoTaxasRequestDto.toEsatDto(entity,dto.getIdMeioDePagamento(), dto.getQtdParcelas(), "123teste");
    ResponseEntity<InputStreamResource> file = esatCalculoFeignClient
            .gerarPdfDamEsat(esatRequestDamDto);

        InputStreamResource isr = new InputStreamResource(file.getBody().getInputStream());
        return isr;

 
}

my endpoint


@RequestMapping(value = "/imprimir",method = RequestMethod.GET, produces = "application/pdf")
public ResponseEntity<InputStreamResource> gerarDam(SolicitacaDamRequestDto dto) throws BusinessException, IOException {
    InputStreamResource file = service.solicitaDamEsat(dto);
    
    return ResponseEntity.ok()
            .contentType(MediaType.parseMediaType("application/pdf"))
            .contentLength(file.contentLength())
            .header(HttpHeaders.CONTENT_DISPOSITION,"attachment: filename="+file.getFilename())
            .body(file);
}

and stackTrace

enter image description here

i'm trying to get de file coming from the external api and provide it at my endpoint.

Upvotes: -1

Views: 312

Answers (2)

Dan T
Dan T

Reputation: 1

Realising I'm a tad late to the party here but for anyone else who wanted to use Inputstreams rather than a byte array, I've found using a Resource rather than InputStreamResource works rather well and you can still get the InputStream from it:

@FeignClient(value = "esatCalculoFeignClient", url = "${api.url.esat}")
public interface EsatCalculoFeignClient {

    @PostMapping("/pedido/gerar")
    ResponseEntity<Resource> gerarPdfDamEsat(@Validated @RequestBody EsatCalculoTaxasRequestDto dto);

}

Upvotes: 0

Cl&#225;udio Tenorio
Cl&#225;udio Tenorio

Reputation: 36

Replace InputStreamResouce with byte[] in Feign

@FeignClient(value = "esatCalculoFeignClient", url = "${api.url.esat}")
public interface EsatCalculoFeignClient {
    
    @PostMapping("/pedido/gerar")
    byte[] gerarPdfDamEsat(@Validated @RequestBody EsatCalculoTaxasRequestDto dto);

}

and convert byte[] to InputStreamResource again in service

InputStreamResource isr = new InputStreamResource(new ByteArrayInputStream(byte));
ResponseEntity<InputStreamResource> responseEntity = ResponseEntity.ok()
                        .contentType(MediaType.parseMediaType("application/pdf"))
                        .header(HttpHeaders.CONTENT_DISPOSITION,"attachment: filename=file.pdf")
                        .body(isr);

Upvotes: 0

Related Questions