在Springboot中使用Webflux实现FilePart到byte[]的转换

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-webflux</artifactId>
</dependency>

import org.springframework.http.codec.multipart.FilePart;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;
import reactor.core.publisher.Mono;

@RestController
public class FileController {

    @PostMapping("/upload")
    public Mono<byte[]> uploadFile(@RequestBody FilePart filePart) {
        return filePart.content().map(dataBuffer -> {
            byte[] bytes = new byte[dataBuffer.readableByteCount()];
            dataBuffer.read(bytes);
            // 在这里可以对byte[]进行处理，如存储到数据库或进行其他操作
            return bytes;
        });
    }
}