CODEWITHSUNDEEP
javaspring-bootspring-webfluxreactor
user3648235
user3648235

Reputation: 199

Java Convert FilePart to byte[] in Springboot using Webflux

I want to get the byte content of the File. Here is my controller:

@PostMapping("/files")
@ResponseStatus(HttpStatus.OK)
public List<UserFilesResponse> uploadFile(@RequestPart("file") FilePart file) {

// I want to get the bytes[] content of my file. How can I do it please ??
}

Upvotes: 3

Views: 4399

Answers (3)

Deb Das
Deb Das

Reputation: 294

@ResponseStatus(HttpStatus.OK)
public List<UserFilesResponse> uploadFile(@RequestPart("file") MultipartFile file) {

byte[] fileBytes = file.getBytes();

//rest of code
}

I would suggest to use multipart file instead of just file part, this will enable you to call the getBytes() method and get the byte array.

Upvotes: 0

Sagir
Sagir

Reputation: 19

Convert filepart to Byte Array

private byte[] convertFilePartToByteArray(FilePart file) throws IOException {
        File convFile = new File(file.filename());
        file.transferTo(convFile);
        return Files.readAllBytes(convFile.toPath());
    }

Upvotes: 0

Andrey Novikov
Andrey Novikov

Reputation: 131

As M. Deinum mentioned, you should use content

I would also recommend https://docs.spring.io/spring-framework/docs/current/javadoc-api/org/springframework/core/io/buffer/DataBufferUtils.html#join-org.reactivestreams.Publisher-

DataBufferUtils.join(filePart.content())
    .map(dataBuffer -> dataBuffer.asByteBuffer().array())

Upvotes: 4

Related Questions