public JsonResult updateAvatr([FromForm] IFormCollection collection, string nick_name)
{
//var files = Request.Form.Files;
int flag = 0;
var userid =
(from c in entity.User
where c.NickName == nick_name
select c.UserId).Distinct();
var id = userid.FirstOrDefault();
if (id == default)
{
flag = 0; //没有找到该用户
Response.StatusCode = 202; //没有该用户
return(Json(new { code = 404, UploadFlag = flag }));
}
var user = entity.User.Find(id); //在数据库中根据key找到相应记录
FormFileCollection files = (FormFileCollection)collection.Files;
IFormFile file = files.FirstOrDefault();
string filename = file.FileName; //--"360截图20191119113847612.jpg"
string fileExtention = System.IO.Path.GetExtension(file.FileName); //--.jpg
string path = Guid.NewGuid().ToString() + fileExtention;
string basepath = My_Environment.ContentRootPath; //en.WebRootPath-》wwwroot的目录; .ContentRootPath到达WebApplication的项目目录
string savePath = basepath + "\\user's_avatr\\" + path;
if (!Directory.Exists(savePath))
{
Directory.CreateDirectory(savePath);
}
// using (FileStream fstream = System.IO.File.Create(newFile)) 也可以
using (FileStream fstream = new FileStream(savePath, FileMode.OpenOrCreate, FileAccess.ReadWrite)) {
file.CopyTo(fstream); // 复制文件
fstream.Flush(); //清空缓存区
user.Avatr = savePath;
entity.Entry(user).State = EntityState.Modified;
entity.SaveChanges();
flag = 1;
Response.StatusCode = 201;//成功
}
return(Json(new { code = 200, UploadFlag = flag }));
}