一、前端搭建
1、前端用到js:uploadify(下載地址:http://www.uploadify.com/download/)、layer (下載地址:http://layer.layui.com/),下載之后把它們放在你的項目里 列如

2、根據(jù)你的需要在你項目適當?shù)奈恢媒⑸蟼魑募哪夸?nbsp; 列如(File)

到此前端搭建結束
二、配置文件修改(可選擇跳過此步驟)
1、首先說明下,這個步驟可以跳過,此步驟主要是修改上傳文件大小的限制(.net 默認最大只能上傳4M)如若需要修改請繼續(xù)閱讀該步驟。
2、打開web.config 配置文件 找到<system.web> 節(jié)點 ,在該節(jié)點下面添加如下節(jié)點
<httpRuntime targetFramework="4.5" executionTimeout="500" maxRequestLength="409600" useFullyQualifiedRedirectUrl="false" minFreeThreads="8" minLocalRequestFreeThreads="4" appRequestQueueLimit="100" /><!-- maxRequestLength屬性是上傳文件大小的設置 值是kb大小 maxRequestLength=“1024” 為最大上傳1M -->
三、代碼編寫
1、說明下:我用的是mvc模式 所以這里就用mvc的方式編寫 (代碼是不變的,開發(fā)者可以根據(jù)你們的設計模式編寫)
2、建立一個控制器PageBaseController在該控制器里編寫如下代碼?。ㄈ绻怯玫腶spx頁面那么把FileUpdateView方法刪掉 ,把UploadifyFile 方法的ActionResult改成void 并去掉return null;)
后端代碼如下
/// <summary>  /// 文件上傳頁面  /// </summary>  /// <returns></returns>  public ActionResult FileUpdateView()  {   return View();  }  /// <summary>  /// 文件處理方法  /// </summary>  /// <param name="filedata"></param>  /// <returns></returns>  public ActionResult UploadifyFile(HttpPostedFileBase filedata)  {   if (filedata == null ||    String.IsNullOrEmpty(filedata.FileName) ||    filedata.ContentLength == 0)   {    return HttpNotFound();   }   string filename = System.IO.Path.GetFileName(filedata.FileName);   string virtualPath = String.Format("~/File/{0}", filename);   string path = Server.MapPath(virtualPath);   // 以下注釋的代碼 都可以獲得文件屬性   // System.Diagnostics.FileVersionInfo info = System.Diagnostics.FileVersionInfo.GetVersionInfo(path);   // FileInfo file = new FileInfo(filedata.FileName);   filedata.SaveAs(path);   return null;  } 注:virtualPath 是我們搭建上傳文件的目錄
3、在視圖(頁面)里引用我們搭建的js:uploadfiy 、layer 路徑
列如:
<script src="~/Scripts/jquery-1.10.2.js"></script><script src="~/Scripts/lib/layer/layer.js"></script><link href="~/Scripts/lib/uploadify/uploadify.css" rel="external nofollow" rel="stylesheet" /><script src="~/Scripts/jquery-1.10.2.min.js"></script><script src="~/Scripts/lib/uploadify/jquery.uploadify.min.js"></script>
注:這里我們用到了jquery
4、前端代碼
<script type="text/javascript"> var uploadifyOnSelectError; var uploadifyOnUploadError; var uploadifyOnSelect; var uploadifyOnUploadSuccess; uploadifyOnSelectError = function (file, errorCode, errorMsg) {  var msgText = "上傳失敗/n";  switch (errorCode) {   case SWFUpload.QUEUE_ERROR.QUEUE_LIMIT_EXCEEDED:    //this.queueData.errorMsg = "每次最多上傳 " + this.settings.queueSizeLimit + "個文件";    msgText += "每次最多上傳 " + this.settings.queueSizeLimit + "個文件";    break;   case SWFUpload.QUEUE_ERROR.FILE_EXCEEDS_SIZE_LIMIT:    msgText += "文件大小超過限制( " + this.settings.fileSizeLimit + " )";    break;   case SWFUpload.QUEUE_ERROR.ZERO_BYTE_FILE:    msgText += "文件大小為0";    break;   case SWFUpload.QUEUE_ERROR.INVALID_FILETYPE:    msgText += "文件格式不正確,僅限 " + this.settings.fileTypeExts;    break;   default:    msgText += "錯誤代碼:" + errorCode + "/n" + errorMsg;  }  layer.msg(msgText); }; uploadifyOnUploadError = function (file, errorCode, errorMsg, errorString) {  // 手工取消不彈出提示  if (errorCode == SWFUpload.UPLOAD_ERROR.FILE_CANCELLED   || errorCode == SWFUpload.UPLOAD_ERROR.UPLOAD_STOPPED) {   return;  }  var msgText = "上傳失敗/n";  switch (errorCode) {   case SWFUpload.UPLOAD_ERROR.HTTP_ERROR:    msgText += "HTTP 錯誤/n" + errorMsg;    break;   case SWFUpload.UPLOAD_ERROR.MISSING_UPLOAD_URL:    msgText += "上傳文件丟失,請重新上傳";    break;   case SWFUpload.UPLOAD_ERROR.IO_ERROR:    msgText += "IO錯誤";    break;   case SWFUpload.UPLOAD_ERROR.SECURITY_ERROR:    msgText += "安全性錯誤/n" + errorMsg;    break;   case SWFUpload.UPLOAD_ERROR.UPLOAD_LIMIT_EXCEEDED:    msgText += "每次最多上傳 " + this.settings.uploadLimit + "個";    break;   case SWFUpload.UPLOAD_ERROR.UPLOAD_FAILED:    msgText += errorMsg;    break;   case SWFUpload.UPLOAD_ERROR.SPECIFIED_FILE_ID_NOT_FOUND:    msgText += "找不到指定文件,請重新操作";    break;   case SWFUpload.UPLOAD_ERROR.FILE_VALIDATION_FAILED:    msgText += "參數(shù)錯誤";    break;   default:    msgText += "文件:" + file.name + "/n錯誤碼:" + errorCode + "/n"     + errorMsg + "/n" + errorString;  }  layer.msg(msgText); }; uploadifyOnSelect = function () { }; uploadifyOnUploadSuccess = function (file, data, response) {  layer.msg(file.name + "/n/n" + response + "/n/n" + data); }; $(function () {  $("#uploadify").uploadify({   uploader: '/PageBase/UploadifyFun', //處理上傳的方法   swf: '/Scripts/lib/uploadify/uploadify.swf',   width: 80, // 按鈕寬度   height: 60, //按鈕高度   buttonText: "上傳文件",   buttonCursor: 'hand',   fileSizeLimit:20480,   fileobjName: 'Filedata',   fileTypeExts: '*.xlsx;*.docx', //擴展名   fileTypeDesc: "請選擇xslx,docx文件", //文件說明   auto: false, //是否自動上傳   multi: true, //是否一次可以選中多個文件   queueSizeLimit: 5, //允許同時上傳文件的個數(shù)   overrideEvents: ['onSelectError', 'onDialogClose'], // 是否要默認提示 要就不配置   onSelect: uploadifyOnSelect,   onSelectError: uploadifyOnSelectError,   onUploadError: uploadifyOnUploadError,   onUploadSuccess: uploadifyOnUploadSuccess  }); });</script><span id="uploadify"></span><div> <a href="javascript:$('#uploadify').uploadify('upload','*');">上傳</a> <a href="javascript:$('#uploadify').uploadify('cancel', '*');">取消</a></div> 注:fileSizeLimit 屬性的值最好和我們web.config 里設置的文件上傳最大值一樣(不能大于這個值)
到這里。我們文件上傳就結束了。
以上就是本文的全部內(nèi)容,希望對大家的學習有所幫助,也希望大家多多支持武林網(wǎng)。
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