第一种方式：需要引入jquery.form.min.js
jquery.form.min.js下载地址
链接：https://pan.baidu.com/s/1HQbd-1cbwmnPdOJL0oj8zA
提取码：j0hx
复制这段内容后打开百度网盘手机App，操作更方便哦
@{ Layout = null; } <!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width" /> <title>Index</title> <script src="~/Scripts/UpLoadFile/jquery-1.8.2.min.js"></script> <script src="~/Scripts/UpLoadFile/jquery.form.min.js"></script> </head> <body> <div> <h3>mvc异步上传文件</h3> @using (Ajax.BeginForm("FileloadAction", "UpLoad", new AjaxOptions { Confirm = "确认上传吗？", HttpMethod = "post", OnSuccess = "func", }, new { enctype = "multipart/form-data", id = "fileForm" })) { <input type="file" name="Filedata" value="" accept=".xls,.docx,.doc,.txt,.pdf" /> @*<button type="submit">异步上传</button>*@ <button type="button">异步上传</button> } </div> </body> </html> <script> //当按钮被点击时执行异步提交 $("button[type=button]").click(() => { //异步提交 $("#fileForm").ajaxSubmit({ url: "@Url.Action("FileloadAction", "UpLoad")", type: "post", success: data => { alert(data); }, error: () => { alert("出错了"); } }); }); </script>
控制器代码：
using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Web; using System.Web.Mvc; namespace HomeWorkSystem.Controllers { public class UpLoadController : Controller { public ActionResult Index() { return View(); } public ActionResult FileloadAction(IEnumerable<HttpPostedFileBase> Filedata) { if (Filedata == null || Filedata.Count() == 0 || Filedata.ToList()[0] == null) { ViewBag.ErrorMessage = "Please select a file!!"; return Content("请选择文件~~~"); } string filePath = string.Empty; string rootFilePath = string.Empty; string fileName = string.Empty; //多文件上传 foreach (HttpPostedFileBase file in Filedata) { string jsonUrl = "UpLoadHomeWork/"; string Url_ClassName = "信息16-1/"; string Url_LessName = "安卓移动"; rootFilePath = AppDomain.CurrentDomain.BaseDirectory + jsonUrl + Url_ClassName + Url_LessName; //检查目录是否存在：不存在则创建 if (!Directory.Exists(rootFilePath)) { Directory.CreateDirectory(rootFilePath); } //对录入上传文件的名字 string extName = Path.GetExtension(file.FileName); string C_Name = "信息16-1"; string T_Title = "JavaWeb"; fileName = C_Name + T_Title + extName; //将文件上传到rootFilePath路径下 file.SaveAs(Path.Combine(rootFilePath, fileName)); } return Content(fileName+"上传成功"); } } }