org.springframework.web.client.RestClientException

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via by Kris De Volder (c), 1 year ago

I've been trying to send a multipart post via restTemplate and have been unable to get it to work with anything but FileSystemResource. In my use case (a weird file-forwarding use case) this forces me to copy a MultiPartFile InputStream into a temp file in order be able to create a FileSystemResource, which seems undesirable. Here's a testing version of the file-receiving controller (from another project, running in another servlet container): {code} @RestController public class FileReceiveController { private Log log = LogFactory.getLog(FileReceiveController.class); @RequestMapping(method = RequestMethod.POST) public void uploadFile(@RequestParam("customerId") int customerId, @RequestPart("file") MultipartFile multipartFile) { log.info("customerId: " + customerId); log.info("Received multipart file - original filename: " + multipartFile.getOriginalFilename()); log.info("content-type: " + multipartFile.getContentType()); log.info("size: " + multipartFile.getSize()); } } {code} Here's the file-forwarding controller: {code} @RestController public class FileForwardController { private RestTemplate restTemplate; public FileForwardController() { SimpleClientHttpRequestFactory requestFactory = new SimpleClientHttpRequestFactory(); requestFactory.setBufferRequestBody(false); this.restTemplate = new RestTemplate(requestFactory); } @RequestMapping(method = RequestMethod.POST) public void uploadFile(@RequestParam("customerId") int customerId, @RequestPart("file") MultipartFile multipartFile) { MultiValueMap<String,Object> parts = new LinkedMultiValueMap<>(); parts.add("customerId", customerId); try { // copy to temp file and use FileSystemResource // File tempFile = File.createTempFile("xyz", ""); // FileCopyUtils.copy(multipartFile.getInputStream(), new FileOutputStream(tempFile)); // parts.add("file", new FileSystemResource(tempFile)); // OR use InputStreamResource (broken) parts.add("file", new InputStreamResource(multipartFile.getInputStream())); // OR use ByteArrayResource (broken) // parts.add("file", new ByteArrayResource(multipartFile.getBytes())); } catch (IOException e) { throw new RuntimeException(e); } HttpHeaders headers = new HttpHeaders(); headers.setContentType(MediaType.MULTIPART_FORM_DATA); HttpEntity<MultiValueMap<String,Object>> request = new HttpEntity<>(parts, headers); restTemplate.exchange("http://localhost:8080", HttpMethod.POST, request, Void.class); } } {code} In this form, the restTemplate.exchange call throws {code} org.springframework.web.client.HttpClientErrorException: 400 Bad Request at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:91) at org.springframework.web.client.RestTemplate.handleResponse(RestTemplate.java:614) at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:570) {code} The ByteArrayResource form does the same thing. Only the FileSystemResource form works.

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org.springframework.web.client.RestClientException: Error running rest call; nested exception is org.springframework.web.client.HttpClientErrorException: 404 Not Found
	at org.springframework.security.kerberos.client.KerberosRestTemplate.doExecute(KerberosRestTemplate.java:196)
	at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:580)
	at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:498)
	at org.apache.zeppelin.livy.LivyHelper.executeHTTP(LivyHelper.java:356)
	at org.apache.zeppelin.livy.LivyHelper.executeCommand(LivyHelper.java:297)
	at org.apache.zeppelin.livy.LivyHelper.interpret(LivyHelper.java:238)
	at org.apache.zeppelin.livy.LivyHelper.interpretInput(LivyHelper.java:188)
	at org.apache.zeppelin.livy.LivySparkInterpreter.interpret(LivySparkInterpreter.java:108)
	at org.apache.zeppelin.interpreter.LazyOpenInterpreter.interpret(LazyOpenInterpreter.java:94)
	at org.apache.zeppelin.interpreter.remote.RemoteInterpreterServer$InterpretJob.jobRun(RemoteInterpreterServer.java:390)
	at org.apache.zeppelin.scheduler.Job.run(Job.java:176)
	at org.apache.zeppelin.scheduler.FIFOScheduler$1.run(FIFOScheduler.java:139)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
Caused by: org.springframework.web.client.HttpClientErrorException: 404 Not Found
	at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:91)
	at org.springframework.web.client.RestTemplate.handleResponse(RestTemplate.java:667)
	at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:620)
	at org.springframework.security.kerberos.client.KerberosRestTemplate.doExecuteSubject(KerberosRestTemplate.java:202)
	at org.springframework.security.kerberos.client.KerberosRestTemplate.access$100(KerberosRestTemplate.java:67)
	at org.springframework.security.kerberos.client.KerberosRestTemplate$1.run(KerberosRestTemplate.java:191)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:360)
	at org.springframework.security.kerberos.client.KerberosRestTemplate.doExecute(KerberosRestTemplate.java:187)
	... 18 more

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