springboot InputStream - spring-boot

Question

I have a controller
void upload(#RequestParam(value="file", MultiPartFile file, #RequestParam(value = "content", required = false) InputStream stream){}
I never get a handle to InputStream when user uploads a file through Stream.
How do i configure that?
The normal file upload works just fine.
I am sending Bzip2 content to upload and multipart default enabled in springboot.
I do get this error.
Caused by: java.lang.IllegalArgumentException: Could not retrieve
InputStream for class path resource [BZh91AY&SY90WT�A�%L
!���!��9D�����ܑN�$�L��]:
at
org.springframework.beans.propertyeditors.InputStreamEditor.setAsText(InputStreamEditor.java:77)
at
org.springframework.beans.TypeConverterDelegate.doConvertTextValue(TypeConverterDelegate.java:449)
at
org.springframework.beans.TypeConverterDelegate.doConvertValue(TypeConverterDelegate.java:422)
at
org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:195)
at
org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:107)
at
org.springframework.beans.TypeConverterSupport.doConvert(TypeConverterSupport.java:64)

Answer 1

Controller
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.security.core.Authentication;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
import com.flasher.service.ImageService;
#RestController
public class ImageControllerRest {
#Autowired
ImageService imageService;
#PostMapping("/upload_img")
public ResponseEntity<?> uploadImage(#RequestParam("file") MultipartFile file, Authentication authentication) {
try {
imageService.store(file, authentication.getName());
return new ResponseEntity<>(HttpStatus.OK);
} catch (Exception e) {
return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
}
}
}
Service
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;
import com.flasher.util.UUIDGenerator;
#Service
public class ImageService {
#Value("${flasher.absolute.img.path}")
String imageUploadPath;
#Autowired
UUIDGenerator uuidGenerator;
public void store(MultipartFile file, String username) {
try {
File uploadFolder = new File(imageUploadPath+username);
if (!uploadFolder.exists()) {
uploadFolder.mkdirs();
}
Files.copy(file.getInputStream(),
Paths.get(uploadFolder.getAbsolutePath()).resolve(uuidGenerator.generateUUID()+"."+file.getContentType().split("/")[1]));
} catch (IOException e) {
e.printStackTrace();
}
}
}
You can achive file upload by this way