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浏览-选择文件-点击 “上传 ”后,效果如下:

弹出透明UI遮罩层 并显示上传这个过程 我这里设置太透明了 效果不是很立体

曾祥展

文件结构如图:

曾祥展

 

说明:用到“高山来客”的大文件上传组件 http://www.cnblogs.com/bashan/archive/2008/05/23/1206095.html

以及Newtonsoft.Json.dll Json字符串反序列化为对象 http://james.newtonking.com/projects/json-net.aspx

jquery.blockUI.js 弹出透明遮罩层 http://malsup.com/jquery/block/

jquery.form.js   表单验证Ajax提交 

参照了“蚂蚁飞了”的文章 多谢多谢 http://blog.csdn.net/jetsteven

 

 

HTML:

<form id="uploadForm" runat="server" enctype="multipart/form-data">   <div id="uploadfield"  style="width:600px; height:500px">    <input id="File1" type="file" runat="server" />    <asp:Button ID="Button1" runat="server"  Text="上传" onclick="Button1_Click" />     <p>文件上传进度条</p>     <p>文件上传进度条</p>     <p>文件上传进度条</p>     <p>文件上传进度条</p>     <p>文件上传进度条</p>     <p>文件上传进度条</p>      <p>文件上传进度条</p>    </div>                    <div id="ui"  style="display:none"  >      <div id="output" > </div>        <div id="progressbar"class="ui-progressbar ui-widget ui-widget-content ui-corner-all" style="width:296px; height:20px;"></div>    <input id="btn_cancel" type="button" value="取消上传" />   </div> </form>
 
js:
 
var inte; $(function() { $('#uploadForm').submit(function() {     return false; });  $('#uploadForm').ajaxForm({ //这里调用jquery.form.js表单注册方法     beforeSubmit: function(a, f, o) {//提交前的处理         o.dataType = "json";         $('#uploadfield').block({ message: $('#ui'), css: { width: '300px', border: '#b9dcfe 1px solid',padding: '0.5em 0.2em'  }         });         inte = self.setInterval("getprogress()", 500);     } });  $('#btn_cancel').click(function() {     var uploadid = $("#UploadID").val();     $.ajax({         type: "POST",         dataType: "json",         async: false, //ajax的请求时同步 只有一个线程         url: "upload_ajax.ashx",         data: "UploadID=" + uploadid + "&cancel=true",         success: function(obj) {             $("#output").html(obj.msg);             inte = self.clearInterval(inte);             $('#uploadfield').unblock();                            }     }); }); });  function getprogress() { var uploadid = $("#UploadID").val() $.ajax({     type: "POST",     dataType: "json",     async: false,     url: "upload_ajax.ashx",     data: "UploadID=" + uploadid,     success: function(obj) {     var p = obj.msg.Readedlength / obj.msg.TotalLength * 100;     var info = "<FONT color=Green> 当前上传文件:</FONT>" + obj.msg.CurrentFile;     info += "<br><FONT color=Green>" + obj.msg.FormatStatus + ":</FONT>" + obj.msg.Status;     info += "<br><FONT color=Green>文件大小:</FONT>" + obj.msg.TotalLength;     info += "<br><FONT color=Green>速度:</FONT>" + obj.msg.FormatRatio;     info += "<br><FONT color=Green>剩余时间:</FONT>" + obj.msg.LeftTime;       $("#output").html(info);     $("#progressbar").progressbar({ value: 0 }); //初始化     $("#progressbar").progressbar("option", "value", p);     $("#progressbar div").html(p.toFixed(2) + "%");     $("#progressbar div").addClass("percentText");     if (obj.msg.Status == 4) {         inte = self.clearInterval(inte);         $('#uploadfield').unblock();      }            } }); }
 
交互过程代码:
 
<%@ WebHandler Language="C#" Class="progressbar" %>  using System; using System.Web;  using BigFileUpload;//大文件引用命名空间 using Newtonsoft.Json;//对象到JSON的相互转换 using System.Text.RegularExpressions;//正则  public class progressbar : IHttpHandler {      private string template = "{{statue:'{0}',msg:{1}}}";    public void ProcessRequest(HttpContext context)    {        context.Response.ContentType = "text/plain";        try       {        string guid = context.Request["UploadID"];        string cancel =context.Request["cancel"];     UploadContext c = UploadContextFactory.GetUploadContext(guid);       if (!string.IsNullOrEmpty(cancel))     {                    c.Abort=true;                    throw new Exception("用户取消");        }        string json = Newtonsoft.Json.JsonConvert.SerializeObject(c);                    WriteResultJson(1, json, context,template);                 }catch (Exception err)        {            WriteResultJson(0, err.Message, context);        }    }      public static void WriteResultJson(int resultno, string description, HttpContext context) {     WriteResultJson(resultno, description, context, "{{statue:'{0}',msg:'{1}'}}"); }  public static void WriteResultJson(int resultno, string description, HttpContext context, string template) {     description = ClearBR(ReplaceString(description, "'", "|", false));     context.Response.Write(string.Format(template, resultno, description)); }  public static string ClearBR(string str) {     Regex r = null;     Match m = null;     r = new Regex(@"(\r|\n)", RegexOptions.IgnoreCase);     for (m = r.Match(str); m.Success; m = m.NextMatch())     {         str = str.Replace(m.Groups[0].ToString(), @"\n");     }     return str; }  public static string ReplaceString(string SourceString, string SearchString, string ReplaceString, bool IsCaseInsensetive) {     return Regex.Replace(SourceString, Regex.Escape(SearchString), ReplaceString, IsCaseInsensetive ? RegexOptions.IgnoreCase : RegexOptions.None); }    public bool IsReusable    {        get       {         return false;        }    }  }         
http://www.cnblogs.com/jcomet/archive/2010/03/24/1693467.html
posted on 2012-02-29 20:42 ivaneeo 阅读(553) 评论(0)  编辑  收藏 所属分类: web2.0

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