Kann MD5-Hash in einem Dateiupload mit Java AWS SDK nicht berechnen

Question

Ich habe bereits über diesen Fehler in vielen Foren recherchiert und keine Lösung löst mein Problem. Wenn ich die Datei-Upload bei S3 mit Amazon API machen, wird die folgende Ausnahme ausgelöst:

com.amazonaws.SdkClientException: Unable to calculate MD5 hash: teste.txt (O sistema não pode encontrar o arquivo especificado) 
at com.amazonaws.services.s3.AmazonS3Client.putObject(AmazonS3Client.java:1622) 
at com.uezohub.backend.domain.service.S3ServiceImpl.uploadFile(S3ServiceImpl.java:50) 
at com.uezohub.backend.domain.service.ConteudoService.uploadConteudo(ConteudoService.java:32) 
at com.uezohub.backend.resources.ConteudoResource.publicaConteudo(ConteudoResource.java:33) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
at java.lang.reflect.Method.invoke(Unknown Source) 
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205) 
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133) 
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:97) 
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827) 
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738) 
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) 
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:967) 
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901) 
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) 
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:661) 
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) 
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) 
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) 
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) 
at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:108) 
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) 
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81) 
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) 
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) 
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) 
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) 
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) 
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478) 
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) 
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81) 
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) 
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) 
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803) 
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) 
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) 
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459) 
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) 
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) 
at java.lang.Thread.run(Unknown Source) 
Caused by: java.io.FileNotFoundException: teste.txt (O sistema não pode encontrar o arquivo especificado) 
at java.io.FileInputStream.open0(Native Method) 
at java.io.FileInputStream.open(Unknown Source) 
at java.io.FileInputStream.<init>(Unknown Source) 
at com.amazonaws.util.Md5Utils.computeMD5Hash(Md5Utils.java:97) 
at com.amazonaws.util.Md5Utils.md5AsBase64(Md5Utils.java:104) 
at com.amazonaws.services.s3.AmazonS3Client.putObject(AmazonS3Client.java:1618) 
... 57 more 

meine envolved Klassen Folgende:

S3Config.class

@Bean 
public AmazonS3 s3client() { 
BasicAWSCredentials awsCreds = new BasicAWSCredentials(awsId, awsKey); 
AmazonS3 s3Client = AmazonS3ClientBuilder.standard() 
         .withRegion(Regions.fromName(region)) 
         .withCredentials(new AWSStaticCredentialsProvider(awsCreds)) 
         .disableChunkedEncoding() 
         .build(); 


return s3Client; 
} 

S3Service.java

@Override 
public String uploadFile(Conteudo conteudo, MultipartFile multipartFile) { 
String keyname = "teste"; 
try { 
    File file = conveteArquivo(multipartFile); 
    s3.putObject(new PutObjectRequest(bucketName, keyname, file)); 
    logger.info("======================= Upload File - Done! ============================"); 
} catch (AmazonServiceException e) { 
    logger.info("Exceção da AmazonSeviceException em requisições PUT, devido:"); 
    logger.info("Mensagem de erro:   " + e.getMessage()); 
    logger.info("Código HTTP:    " + e.getStatusCode()); 
    logger.info("Código de erro da AWS: " + e.getErrorCode()); 
    logger.info("Tipo do erro:    " + e.getErrorType()); 
    logger.info("ID da requisição:   " + e.getRequestId()); 
} catch (AmazonClientException e) { 
    logger.info("Exceção da AmazonClientException"); 
    logger.info("Mensagem de erro:   " + e.getMessage()); 
    e.printStackTrace(); 
} catch (IllegalStateException e) { 
    e.printStackTrace(); 
} catch (IOException e) { 
    e.printStackTrace(); 
} 
return linkBucket + keyname; 
} 

private File conveteArquivo(MultipartFile multipart) throws IllegalStateException, IOException { 
    File convFile = new File(multipart.getOriginalFilename()); 
    multipart.transferTo(convFile); 
    return convFile; 
} 

Steuerung

@PostMapping 
public ResponseEntity<Conteudo> publicaConteudo(@RequestPart("file") MultipartFile file, @RequestPart String conteudo) throws JsonParseException, JsonMappingException, IOException { 
    Conteudo conteudoConvertido = new ObjectMapper().readValue(conteudo, Conteudo.class); 
    Conteudo conteudoArmazenado = conteudoService.uploadConteudo(conteudoConvertido, file); 
    return ResponseEntity.ok(conteudoArmazenado); 
} 

Ich verwende Version 1.11.106 des Amazon SDK. Hat jemand eine Idee, was könnte der Grund für diese Ausnahme sein? Ich weiß nicht was.

Answer 1

Das Problem besteht darin, die temporäre lokale Datei zu schreiben und sie zum Hochladen auf S3 zurückzulesen. Sie abgeschnitten Ihre Ausnahme-Stack, aber ich nehme an, es die Linie

s3.putObject(new PutObjectRequest(bucketName, keyname, file)); 

Vielmehr enthält als die temporäre Datei zu schreiben, müssen Sie MultipartFile.getInputStream()/MultipartFile.getSize() verwenden und sie an den PutObjectRequest vorbei this Konstruktor.

Answer 2

Hallo, ich bin vor dem gleichen Problem,

exception = "com.amazonaws.SdkClientException"; 
    message = "Unable to calculate MD5 hash: /home/ubuntu/image1517896928.png (No such file or directory)"; 

ich zuerst die MultipartFile auf meinem Server herunterzuladen und dann die Datei mit I die putObject Methode aufrufen.

File localFile = new File(SERVER_HOME_DIRECTORY + image.getOriginalFilename()); 

AmazonS3 s3client = new AmazonS3Client(); 
s3client.setRegion(Region.getRegion(Regions.EU_CENTRAL_1)); 

s3client.putObject(new PutObjectRequest("bucketName", "prefix", localFile));