如何在Spring5MVC中将FilePart转换为byte[]

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

@PostMapping("/upload")
public String handleFileUpload(@RequestPart("file") FilePart filePart) {
    // 处理文件上传逻辑
    byte[] fileBytes = convertFilePartToByteArray(filePart);
    // 其他操作...
    return "success";
}

private byte[] convertFilePartToByteArray(FilePart filePart) {
    try {
        InputStream inputStream = filePart.content();
        return inputStream.readAllBytes();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return null;
}