I'm getting error “org.springframework.web.client.HttpClientErrorException$BadRequest: 400 Bad Request”

Question

I'm getting this error "org.springframework.web.client.HttpClientErrorException$BadRequest: 400 Bad Request" while trying to internally call POST API from another GET API in spring boot. following is the code. also I'm getting multipart file as input in the get api and wants to send that file to this internal post api

Path tempFile = Files.createTempFile(null, null);

            Files.write(tempFile, newFile.getBytes());
            File fileToSend = tempFile.toFile();

            FileSystemResource fr = new FileSystemResource(fileToSend);

            String baseUrl = "someURL which is correct";
            URI uri = new URI(baseUrl);
            HttpHeaders headers = new HttpHeaders();
            headers.setContentType(MediaType.MULTIPART_FORM_DATA);
            //headers.set("Content-type", "multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW");
            headers.set("Ocp-Apim-Subscription-Key","{key which i dont want to display}");

            MultiValueMap<String, Object> body = new LinkedMultiValueMap<>();
            body.add("newFile", fr);

            HttpEntity<MultiValueMap<String, Object>> requestEntity = new HttpEntity<>(body, headers);

            RestTemplate restTemplate = new RestTemplate();
            ResponseEntity<String> response = restTemplate.postForEntity(uri, requestEntity, String.class);

            return response;

Answer 1

在restTemplate.postForEntity方法中传递baseUrl字符串而不是uri并尝试