关于取minio的文件类型获取(已经解决)

func ListObj() (fileInfo []ObjectType) {
    fileInfo = make([]ObjectType, 0)
    objectCh := client.ListObjects(context.Background(), "cloud", minio.ListObjectsOptions{
        Recursive: true,
    })
    for fileObjects := range objectCh {
        if fileObjects.Err != nil {
            log.Println(fileObjects.Err)
            return nil
        }
        fileInfo = append(fileInfo, ObjectType{
            FileName: fileObjects.Key,
            FileType: fileObjects.ContentType,
        })
        fmt.Printf("文件名:%s 文件类型:%s\n", fileObjects.Key,fileObjects.ContentType)
    }
    return fileInfo
}

在调用fileObjects.ContentType的时候无法获取到ContentType的类型，请帮忙给指点一下谢谢

已经解决了: 调用fileObjects.UserMetadata["content-type"]