JQuery fileupload插件实现文件上传功能

道理相通，我简单分享下在.net MVC下的实装。

1.制作Model类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
 
namespace RCRS.WebApp.LG.EM.Models
{
  //----------------------------------------------------------------
  /// <summary>
  /// Import画面用
  /// </summary>
  //----------------------------------------------------------------
  public class tmp_UploadFile
  {
    /// <summary></summary>
    public HttpPostedFile  FileName { get; set; }
  }
}

2.实装controller里的对应方法，我这个处理逻辑比较复杂，懒得修改了，反正就这个意思

    public virtual ActionResult UploadFile()
    {
      HttpPostedFile  uploadedFile = Request.Files[\"FileName\"];
      string message = \"アップロード失敗しました。\";
      bool isUploaded = false;
      string path = \"\";
      string dateTimeNow = DateTime.Now.ToString(\"yyMMdd-hhmmss\");
      string userName = User.Identity.GetUserName();
      string uploadMsg = string.Empty;
 
      if (uploadedFile != null && uploadedFile.ContentLength != 0)
      {
        string pathForSaving = Server.MapPath(\"~/App_Data/Uploaded/\");
        try
        {
          if (BsnssBihin.IsExcel(uploadedFile.FileName))
          {
            path = System.IO.Path.Combine(pathForSaving, dateTimeNow + \"_\" + uploadedFile.FileName);
            uploadedFile.SaveAs(path);
            isUploaded = BsnssBihin.UploadBihinChange(path, userName, ref uploadMsg);
            if (isUploaded)
            {
              message = \"アップロード成功しました！\" + \"\\n\" + uploadMsg;
              Logger.Info(\"[成功]備品アップロード, \" + dateTimeNow + \", \" + \"[\" + userName + \"]\" + \"[\" + path + \"]\" + uploadMsg);
            }
            else
            {
              message = \"アップロード失敗しました。\" + \"\\n\" + uploadMsg;
              Logger.Info(\"[失敗]備品アップロード, \" + dateTimeNow + \", \" + \"[\" + userName + \"]\" + \"[\"+path + \"]\" + uploadMsg);
            }
          }
          else
          {
            message = \"ファイルの形式は不正です。\";
          }
        }
        catch (Exception ex)
        {
          message = string.Format(\"失敗しました: {0}\", ex.Message);
          Logger.Info(\"[失敗]備品アップロード: \" + ex.Message + dateTimeNow + \", \" + \"[\" + userName + \"]\" + \"[\" + path + \"]\");
        }
      }
      return Json(new { isUploaded = isUploaded, message = message }, \"text/html\");
    }

3.页面的实装

@model RCRS.WebApp.LG.EM.Models.tmp_UploadFile
<table align=\"center\" style=\"margin-bottom:200px\">
  <tr>
    <td>
      <div style=\"width:470px\">
        <input type=\"text\" id=\"tbx-file-path\" value=\"ファイルを選択してください\" readonly=\"readonly\" />
      </div>
    </td>
    <td>
      <div style=\"width: 60px\">
        <span class=\"btn btn-primary fileinput-button\">
          <span>選 択</span>
          @Html.TextBoxFor(m => m.FileName, new { id = \"file-upload\", type = \"file\", accept = \"application/vnd.open formats-officedocument.spreadsheetml.sheet, application/vnd.ms-excel\" })
        </span>
      </div>
    </td>
    <td>
      <div style=\"width:60px\">
        <a class=\"btn btn-primary\" href=\"#\" id=\"hl-start-upload\">アップロード</a>
      </div>
    </td>
  </tr>
</table>
 
<div id=\"loadingOver\" class=\"loadingOver\"></div>
<div id=\"dvloader\" class=\"dvloader\">
  <span class=\"label label-info\" style=\"align-content:center\"> 処理中、少々お待ちください</span><br />
  <br />
  <img id=\"loadingGif\" src=\"../Content/img/loader.gif\" alt=\"\" />
</div>
 
@section  s{
  @ s.Render(\"~/bundles/jquery\")
  @ s.Render(\"~/bundles/jqueryui\")
  @ s.Render(\"~/bundles/jqueryval\")
  @ s.Render(\"~/bundles/common\")
  @ s.Render(\"~/bundles/fileupload\")
  <  type=\"text/ \">
    var data_upload;
    $(document).ready(function () {
      \'use strict\';
      $(\'#file-upload\').fileupload({
        url: \'../Bihin/UploadFile\',
        dataType: \'json\',
        add: function (e, data) {
          data_upload = data;
        },
        done: function (event, data) {
          if (data.result.isUploaded) {
            $(\"#tbx-file-path\").val(\"ファイルを選択してください\");
            data_upload = \"\";
          }
 
          $(\"#dvloader\").css(\"display\", \"none\");
          $(\"#loadingOver\").css(\"display\", \"none\");
 
          alert(data.result.message);
        },
        fail: function (event, data) {
          data_upload = \"\";
          if (data.files[0].error) {
 
            $(\"#dvloader\").css(\"display\", \"none\");
            $(\"#loadingOver\").css(\"display\", \"none\");
 
            alert(data.files[0].error);
          }
        }
      });
    });
 
    $(\"#hl-start-upload\").on(\'click\', function () {
      if (data_upload) {
        $(\"#dvloader\").css(\"display\", \"block\");
        $(\"#loadingOver\").css(\"display\", \"block\");
        data_upload.submit();
      }
      return false;
    });
 
    $(\"#file-upload\").on(\'change\', function () {
      $(\"#tbx-file-path\").val(this.files[0].name);
    });
 
    </ >
}

就是这个样子

还附赠了一个简易loding的实现

贴出CSS代码：

.dvloader {
  display:none;
  position:absolute;
  top:40%;
  left:40%;
  width:20%;
  height:20%;
  z-index:1001;
  text-align:center;
  font-size:1.5em;
}
 
.loadingOver {
  display:none;
  position:absolute;
  top:0;
  left:0;
  width:100%;
  height:100%;
  background-color:#f5f5f5;
  opacity:0.5;
  z-index:1000;
}

这里，多说一嘴：
关于input 的accept属性，这里只想读入Excel，所以
application/vnd.open formats-officedocument.spreadsheetml.sheet, application/vnd.ms-excel

以上就是本文的全部内容，希望对大家的学习有所帮助。