ASP.NET实现大文件上传功能
需要下载NeatUpload插件
上传页面:
<%@PageLanguage="C#"AutoEventWireup="true"CodeFile="index.aspx.cs"Inherits="_Default"%> <%@RegisterAssembly="Brettle.Web.NeatUpload"Namespace="Brettle.Web.NeatUpload" TagPrefix="Upload"%> <!DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <htmlxmlns="http://www.w3.org/1999/xhtml"> <headrunat="server"> <title></title> <linkhref="easyui/themes/default/easyui.css"rel="stylesheet"type="text/css"/> <linkhref="easyui/themes/icon.css"rel="stylesheet"type="text/css"/> <scriptsrc="easyui/jquery.min.js"type="text/javascript"></script> <scriptsrc="easyui/jquery.easyui.min.js"type="text/javascript"></script> </head> <body> <formid="form1"runat="server"> <divclass="easyui-panel"style="padding:5px;"> <Upload:ProgressBarID="ProgressBar1"runat='server'> </Upload:ProgressBar> <br/> <Upload:InputFileID="AttachFile"runat="server"/> <br/> <br/> <asp:LinkButtonID="BtnUP"runat="server"class="easyui-linkbutton"data-options="iconCls:'icon-add'"onclick="BtnUP_Click">上传</asp:LinkButton><br/><br/> <ahref="Down.aspx">查看下载</a> </div> </form> </body> </html>
后台源码:
protectedvoidBtnUP_Click(objectsender,EventArgse) { if(AttachFile.HasFile) { stringFileName=this.AttachFile.FileName;//获取上传文件的文件名,包括后缀 stringExtenName=System.IO.Path.GetExtension(FileName);//获取扩展名 stringSaveFileName=System.IO.Path.Combine(System.Web.HttpContext.Current.Request.MapPath("UpLoads/"),DateTime.Now.ToLongDateString().ToString()+"-"+FileName);//合并两个路径为上传到服务器上的全路径 AttachFile.MoveTo(SaveFileName,Brettle.Web.NeatUpload.MoveToOptions.Overwrite); stringurl="UpLoads/"+DateTime.Now.ToString("yyyyMMddhhmmss")+ExtenName;//文件保存的路径 floatFileSize=(float)System.Math.Round((float)AttachFile.ContentLength/1024000,1);//获取文件大小并保留小数点后一位,单位是M Response.Write("<script>alert('恭喜您,上传成功!')</script>"); } else { Response.Write("<script>alert('请选择文件!')</script>"); } }
这里直接获取上传文件夹文件名称提供下载
<%@PageLanguage="C#"AutoEventWireup="true"CodeFile="Down.aspx.cs"Inherits="Down"%> <!DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <htmlxmlns="http://www.w3.org/1999/xhtml"> <headrunat="server"> <title></title> <linkhref="easyui/themes/default/easyui.css"rel="stylesheet"type="text/css"/> <linkhref="easyui/themes/icon.css"rel="stylesheet"type="text/css"/> <scriptsrc="easyui/jquery.min.js"type="text/javascript"></script> <scriptsrc="easyui/jquery.easyui.min.js"type="text/javascript"></script> <styletype="text/css"> .div_styleulli { list-style-type:decimal; border-bottom:1pxdashed#E3E3E3; margin-bottom:5px; } .div_styleullia { text-decoration:none; cursor:pointer; font-size:16px; } </style> </head> <body> <formid="form1"runat="server"> <divclass="div_styleeasyui-panel"style="padding:5px;"> <ahref="index.aspx">上传文件</a> <asp:LabelID="Label1"runat="server"Text=""></asp:Label> <ulid="www_zzjs_net"> <%if(files.Length==0){Label1.Text="暂无文件";} else { foreach(System.IO.FileInfoiteminfiles) {%> <li><ahref="Default2.aspx?1=<%=item%>"> <%=item%></a> <ahref="delete.aspx?1=<%=item%>"onclick="javascript:returnconfirm('确定删除吗?');">删除附件</a> </li> <%} }%> </ul> </div> <divid="changpage"></div> <%--js分页--%> <%--<scriptlanguage="javascript"> varobj,j; varpage=0; varnowPage=0;//当前页 varlistNum=25;//每页显示<ul>数 varPagesLen;//总页数 varPageNum=4;//分页链接接数(5个) onload=function(){ obj=document.getElementById("www_zzjs_net").getElementsByTagName("li"); j=obj.length PagesLen=Math.ceil(j/listNum); upPage(0) } functionupPage(p){ nowPage=p //内容变换 for(vari=0;i<j;i++){ obj[i].style.display="none" } for(vari=p*listNum;i<(p+1)*listNum;i++){ if(obj[i])obj[i].style.display="block" }//欢迎来到站长特效网,我们的网址是www.zzjs.net,很好记,zz站长,js就是js特效,本站收集大量高质量js代码,还有许多广告代码下载。 //分页链接变换 strS='<ahref="###"onclick="upPage(0)">首页</a>' varPageNum_2=PageNum%2==0?Math.ceil(PageNum/2)+1:Math.ceil(PageNum/2) varPageNum_3=PageNum%2==0?Math.ceil(PageNum/2):Math.ceil(PageNum/2)+1 varstrC="",startPage,endPage; if(PageNum>=PagesLen){startPage=0;endPage=PagesLen-1} elseif(nowPage<PageNum_2){startPage=0;endPage=PagesLen-1>PageNum?PageNum:PagesLen-1}//首页 else{startPage=nowPage+PageNum_3>=PagesLen?PagesLen-PageNum-1:nowPage-PageNum_2+1;vart=startPage+PageNum;endPage=t>PagesLen?PagesLen-1:t} for(vari=startPage;i<=endPage;i++){ if(i==nowPage)strC+='<ahref="###"style="color:red;font-weight:700;"onclick="upPage('+i+')">'+(i+1)+'</a>' elsestrC+='<ahref="###"onclick="upPage('+i+')">'+(i+1)+'</a>' }//欢迎来到站长特效网,我们的网址是www.zzjs.net,很好记,zz站长,js就是js特效,本站收集大量高质量js代码,还有许多广告代码下载。 strE='<ahref="###"onclick="upPage('+(PagesLen-1)+')">尾页</a>' strE2=nowPage+1+"/"+PagesLen+"页"+"共"+j+"条" document.getElementById("changpage").innerHTML=strS+strC+strE+strE2 } </script>--%> </form> </body> </html> //下面是后台代码 publicFileInfo[]files{set;get;} protectedvoidPage_Load(objectsender,EventArgse) { stringdirPath=HttpContext.Current.Server.MapPath("~/UpLoads"); if(Directory.Exists(dirPath)) { DirectoryInfodir=newDirectoryInfo(dirPath); files=dir.GetFiles("*.*"); } if(files.Length==0){Label1.Text="暂无文件";} } //这是新建另一个页面提供下载的代码 if(Request.QueryString["1"]!=null) { string_filename=Request.QueryString["1"].ToString(),_filepath=System.IO.Path.Combine(MapPath("~/UpLoads"),_filename); if(System.IO.File.Exists(_filepath)) { Response.Clear(); Response.Buffer=true; Response.AddHeader("Content-Disposition","attachment;filename="+_filename); Response.ContentType="application/unknow"; Response.TransmitFile(_filepath); Response.End(); } } //这是新建另一个页面提供删除操作(后台) string_filename=Request.QueryString["1"].ToString(),_filepath=System.IO.Path.Combine(MapPath("~/UpLoads"),_filename); if(System.IO.File.Exists(_filepath)) { File.Delete(_filepath); Response.Write("<scriptlanguage=javascript>alert('删除成功!');window.location='Down.aspx';</script>"); //Response.Redirect("Down.aspx"); }
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