Asp.Net Core 使用IBrowserFile完成图片上传

news/2024/10/5 9:29:02/文章来源:https://www.cnblogs.com/ssz0312/p/18274829

Asp.Net Core 使用IBrowserFile完成图片上传

写在开头

前几天弄自己的项目时遇到的问题，发现了asp.net core 新增的IBrowserFile接口，事实上他可以满足大多数文件的上传，此处我仅以图片作为示例。

实现

添加一个帮助类FileHelper,遵循一种规范，即将静态文件资源存放至wwwroot文件夹下

public class FileHelper
{private static long maxFileSize = 1024 * 512;//大小public static async Task<string> AddImage(IBrowserFile file,string Factory){var type = file.ContentType.Split('/');var picloca = $"/{type[0]}{DateTime.Now.ToString("yyyyMMddhhmmssffff")}.{type[1]}";var fileloca = $"images/{Factory}/{DateTime.Now.ToString("yyyy-MM")}";var path = Path.Combine(Environment.CurrentDirectory, $"wwwroot/{fileloca}");if (!Directory.Exists(path)){//创建文件夹try { Directory.CreateDirectory(path); } catch { }}await using FileStream fs = new($"{path}/{picloca}", FileMode.Create);await file.OpenReadStream(maxFileSize).CopyToAsync(fs);return $"{fileloca}{picloca}";//返回图片路径}
}

ContentType属性的值是像image/png,application/pdf这种形式。而excel文件则会变成这种application/vnd.ms-excel,

在保存的时候手动改一下即可
picloca = $"/{type[0]}{DateTime.Now.ToString("yyyyMMddhhmmssffff")}.xls";

部分对应关系：

·doc => ‘application/msword’,
·bin => ‘application/octet-stream’,
·exe => ‘application/octet-stream’,
·so => ‘application/octet-stream’,
·dll => ‘application/octet-stream’,
·pdf => ‘application/pdf’,
·ai => ‘application/postscript’,
·xls => ‘application/vnd.ms-excel’,