网络编程 发布日期:2025/11/15 浏览次数:1
本文主要从前台和后台代码分析了jquery.form.js实现异步上传的方法,分享给大家,具体代码如下
前台代码:
@{
Layout = null;
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<script src="/UploadFiles/2021-04-02/jquery-1.7.2.min.js">
后台代码:
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Web;
using System.Web.Mvc;
namespace IceMvc.Controllers
{
public class UploadController : Controller
{
//
// GET: /Upload/
public ActionResult Index()
{
return View();
}
[HttpPost]
public ActionResult Upload()
{
var filesList = Request.Files;
for (int i = 0; i < filesList.Count; i++)
{
var file = filesList[i];
if (file.ContentLength > 0)
{
if (file.ContentLength > 5242880)
{
return Content("<script>alert('注册失败!因为您选择图片文件不能大于5M.');window.location='/User/Register';</script>");
}
//得到原图的后缀
string extName = System.IO.Path.GetExtension(file.FileName);
//生成新的名称
string newName = Guid.NewGuid() + extName;
string imgPath = Server.MapPath("/upload/img/") + newName;
if (file.ContentType.Contains("image/"))
{
using (Image img = Image.FromStream(file.InputStream))
{
img.Save(imgPath);
}
var obj = new { fileName = newName };
return Json(obj);
}
else
{
//return Content("<script>alert('注册失败!因为您未选择图片文件.');window.location='/User/Register';</script>");
}
}
}
return Content("");
}
public ActionResult Afupload()
{
return View();
}
}
}
以上就是针对jquery.form.js实现异步上传的方法,希望对大家的学习有所帮助。