快速搜索
主页 > ag亚游vip|HOME > asp.netag怎么试玩|平台 >

asp.net+ajaxfileupload.js 实现文件异步上传代码分享

时间:2014-11-28 16:14来源:网络整理 作者:网络 点击:
分享到:
本文给大家分享一段asp.net基于ajaxfileupload.js实现文件异步上传的代码,本人项目中已经在使用的代码,小伙伴们可以直接移植到自己的项目中去。

由于代码很简单,这里就闲话不多说了,直接上代码,小伙伴们自己研读代码就明白了。

前台代码:?

复制代码 代码如下:

/*修改头像*/?
??? //上传?
??? function _sc() {?
??????? $(".ckfile").html("").css("color", "#535353");?
??????? $("#_userImgPath").val("");?
??????? var str = $("#file").val();?
??????? if ($.trim(str) == "") {?
??????????? $(".ckfile").html("请选择文件。").css("color", "red");?
??????????? return false;?
??????? }?
??????? else {?
??????????? var postfix = str.substring(str.lastIndexOf(".") + 1).toUpperCase();?
ag亚游vip|HOME ??????????? if (postfix == "JPG" || postfix == "JPEG" || postfix == "PNG" || postfix == "GIF" || postfix == "BMP") {?
??????????????? $('#showimg').attr('src', 'Images/loading.gif').attr("title", "上传中,请稍后…");?
??????????????? var path = "Upload/UserImg";?
??????????????? $.ajaxFileUpload({?
??????????????????? url: '/Upload.aspx?path=Upload|UserImg&shape=100*100',?
??????????????????? secureuri: false,?
??????????????????? fileElementId: 'file',?
??????????????????? dataType: 'text',?
??????????????????? success: function (msg) {?
??????????????????????? if (msg.lastIndexOf(path) == -1) {?
??????????????????????????? $(".ckfile").html(msg).css("color", "red");?
??????????????????????? }?
??????????????????????? else {?
??????????????????????????? $('#showimg').attr('src', msg).attr("title", "我的头像");?
??????????????????????????? $("#_userImgPath").val(msg);?
??????????????????????? }?
??????????????????? }?
??????????????? });?
??????????? } else {?
??????????????? $(".ckfile").html("文件格式错误。").css("color", "red");?
??????????????? return false;?
??????????? }?
??????? }?
??? }?

后台代码:

复制代码 代码如下:

using System;?
using System.Collections.Generic;?
using System.Linq;?
using System.Web;?
using System.Web.UI;?
using System.Web.UI.WebControls;?
using SS.Upload;?
using WFC.Fenxiao;?
namespace wanfangcheng?
{?
??? public partial class Upload : BasePage?
??? {?
??????? //文件大小 1024 kb?
??????? private long size = 1024;?
??????? //文件类型?
??????? private string type = ".jpg|.jpeg|.png|.gif|.bmp";?
??????? //保存名称?
??????? string name = "";?
??????? //保存路径?
??????? private string path = @"Upload/UserImg";?
??????? //保存大小?
??????? private string shape = "100*100";?
??????? protected void Page_Load(object sender, EventArgs e)?
??????? {?
??????????? HttpFileCollection files = Request.Files;?
??????????? if (files != null && files.Count > 0)?
??????????? {?
??????????????? name = BaseRole.Instance.UserId.ToString();?
??????????????? if (Request.QueryString["size"] != null)?
??????????????? {?
??????????????????? size = Convert.ToInt32(Request.QueryString["size"]);?
??????????????? }?
??????????????? if (Request.QueryString["path"] != null)?
??????????????? {?
??????????????????? path = Request.QueryString["path"].ToString().Trim().Replace('|', '/');?
??????????????? }?
??????????????? if (Request.QueryString["name"] != null)?
??????????????? {?
??????????????????? name = Request.QueryString["name"].ToString().Trim();?
??????????????? }?
??????????????? if (Request.QueryString["shape"] != null)?
??????????????? {?
??????????????????? shape = Request.QueryString["shape"].ToString().Trim();?
??????????????? }?
??????????????? uploadMethod(files);?
??????????? }?
??????? }?
??????? /// ?
??????? /// 上传图片?
??????? ///
?
??????? /// ?
??????? public void uploadMethod(HttpFileCollection hc)?
??????? {?
??????????? HttpPostedFile _file = hc[0];?
??????????? //文件大小?
??????????? long _size = _file.ContentLength;?
??????????? if (_size <= 0)?
??????????? {?
??????????????? Response.Write("文件错误。");?
??????????????? Response.End();?
??????????????? return;?
??????????? }?
??????????? if (size * 1024 < _size)?
??????????? {?
??????????????? Response.Write("文件过大,最大限制为" + size + "KB。");?
??????????????? Response.End();?
??????????????? return;?
??????????? }?
??????????? //文件名?
??????????? string _name = _file.FileName;?
??????????? //文件格式?
??????????? string _tp = System.IO.Path.GetExtension(_name).ToLower();?
??????????? if (type.IndexOf(_tp) == -1)?
??????????? {?
??????????????? Response.Write("文件格式错误。");?
??????????????? Response.End();?
??????????????? return;?
??????????? }?
??????????? //保存路径?
??????????? string _path = HttpContext.Current.Server.MapPath(path) + @"/" + name + _tp;?
??????????? try?
??????????? {?
??????????????? int w = Convert.ToInt32(shape.Split('*')[0]);?
??????????????? int h = Convert.ToInt32(shape.Split('*')[1]);?
??????????????? ImageHelper.CutForCustom(_file, _path, w, h, 50);?
??????????????? Response.Write(path + @"/" + name + _tp);?
??????????? }?
??????????? catch (Exception)?
??????????? {?
??????????????? Response.Write("哎呦,出错了。");?
??????????????? Response.End();?
??????????? }?
??????? }?
??? }?
}?

是不是很实用,也很简单易懂呢,以上是自己项目中使用的代码,小伙伴们如果发现有问题的地方,还请告之。谢谢

精彩图集

赞助商链接