ASP.NET文件上传问题

http://www.csdn.net/develop/article/20/20849.shtm

在项目中添加一个SaveContract文件夹
在保存事件中
if(this.RecFile.PostedFile!=null)
{
string aa=this.RecFile.PostedFile.FileName;
string strPhyPath=null;
if(aa!=null && aa!="")
{
int i=aa.LastIndexOf('.');
aa=aa.Substring(i);
Guid g=Guid.NewGuid();
aa=g.ToString()+aa;
string substr="SaveContract/"+aa; string strUrl=Request.CurrentExecutionFilePath;
strUrl=strUrl.Substring(0,strUrl.LastIndexOf('/')+1);
strUrl=strUrl+substr;//获得虚地址
strPhyPath=Server.MapPath(strUrl); string strAbsoluteUrl=Request.Url.AbsoluteUri;
strAbsoluteUrl=strAbsoluteUrl.Substring(0,strAbsoluteUrl.LastIndexOf('/')+1);
strAbsoluteUrl=strAbsoluteUrl+substr;//获得绝对地址
////////////////////////////////////
做把虚拟地址保存到数据库的工作
/////////////
if(strPhyPath!=null && strPhyPath!="")
{
this.RecFile.PostedFile.SaveAs(strPhyPath);
}

<%@ Page language="c#"%>
<%@ Import Namespace="System.Data.SqlClient" %>
<%@ Import Namespace="System.Web" %>
<%@ Import Namespace="System.Web.UI" %>
<%@ Import Namespace="System.Web.UI.WebControls" %>
<%@ Import Namespace="System.Data" %>
<script runat="server">
override protected void OnInit(EventArgs e)
{
this.btUp.Click += new System.EventHandler(this.btUp_Click);
this.DataGrid1.DeleteCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGrid1_DeleteCommand);
this.Load += new System.EventHandler(this.Page_Load);
base.OnInit(e);
}
void Page_Load(object sender, System.EventArgs e)
{
this.btUp.Attributes.Add("onclick","loading.style.display='';document.body.enabled=true");
if(Request["downFile"]!=null)//下载文件
{
string strFileID = Request["downFile"];
SqlConnection conn = new SqlConnection("Data Source=localhost;database=test;user id=sa;password=");
SqlDataAdapter adapt = new SqlDataAdapter("select * from [file] where id="+strFileID,conn);
DataSet ds = new DataSet();
adapt.Fill(ds);
if(ds.Tables.Count!=0 && ds.Tables[0].Rows.Count!=0)
{
Response.ClearHeaders();
Response.ClearContent();
Response.AddHeader("Content-Disposition", "attachment; filename="+ds.Tables[0].Rows[0]["fileName"].ToString());
byte[] context = (Byte[])ds.Tables[0].Rows[0]["fileContext"];
Response.OutputStream.Write(context,0,context.Length);
Response.End();
}
else
{
Response.Write("<font color=red>没有找到要下载的文件</font>");
}
}
else //显示文件列表
{
ListFile();
}
}
void ListFile()
{
SqlConnection conn = new SqlConnection("Data Source=localhost;database=test;user id=sa;password=");
SqlDataAdapter adapt = new SqlDataAdapter("select * from [file]",conn);
DataSet ds = new DataSet();
adapt.Fill(ds);
this.DataGrid1.DataSource = ds;
this.DataGrid1.DataBind();
}
void btUp_Click(object sender, System.EventArgs e)
{
if(File.PostedFile!=null && File.PostedFile.ContentLength!=0)
{
int size = File.PostedFile.ContentLength;

SqlConnection conn = new SqlConnection("Data Source=localhost;database=test;user id=sa;password=");
SqlCommand cmd = new SqlCommand("insert into [file] (fileName,fileType,fileSize,fileContext) values(@fileName,@fileType,@fileSize,@fileContext)",conn);
//文件名
SqlParameter param = new SqlParameter("@fileName",SqlDbType.VarChar,50);
param.Value = File.PostedFile.FileName.Substring(File.PostedFile.FileName.LastIndexOf("\\")+1);
cmd.Parameters.Add(param);
//文件类型
param = new SqlParameter("@fileType",SqlDbType.VarChar,50);
param.Value = File.PostedFile.ContentType;
cmd.Parameters.Add(param);
//文件大小
param = new SqlParameter("@fileSize",SqlDbType.Float,8);
param.Value = size;
cmd.Parameters.Add(param);
//文件内容
byte[] context = new Byte[size];
param = new SqlParameter("@fileContext",SqlDbType.Image);
File.PostedFile.InputStream.Read(context,0,size);
param.Value = context;
cmd.Parameters.Add(param); conn.Open();
cmd.ExecuteNonQuery();
conn.Close();

ListFile();
}
else
{
Response.Write("<font color=red>上传文件为空</font>");
}
}
void DataGrid1_DeleteCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
{
SqlConnection conn = new SqlConnection("Data Source=localhost;database=test;user id=sa;password=");
SqlCommand cmd = new SqlCommand("delete [file] where id = @id",conn);
SqlParameter param = new SqlParameter("@id",SqlDbType.Int);
param.Value = e.Item.Cells[0].Text;
cmd.Parameters.Add(param);
conn.Open();
cmd.ExecuteNonQuery();
conn.Close(); ListFile();
}
</script>
<HTML>
<HEAD>
<title>通用上传下载--支持所有格式文件</title>
</HEAD>
<body>
<form id="WebForm5" method="post" runat="server" enctype="multipart/form-data">
<input id="File" type="file" runat="server">
<asp:button id="btUp" runat="server" Text="上传"></asp:button><asp:datagrid id="DataGrid1" runat="server" AutoGenerateColumns="False">
<HeaderStyle BackColor="#669966"></HeaderStyle>
<Columns>
<asp:BoundColumn DataField="ID" HeaderText="ID">
<HeaderStyle HorizontalAlign="Center"></HeaderStyle>
</asp:BoundColumn>
<asp:BoundColumn DataField="fileName" HeaderText="文件名">
<HeaderStyle HorizontalAlign="Center"></HeaderStyle>
</asp:BoundColumn>
<asp:BoundColumn DataField="fileType" HeaderText="文件类型">
<HeaderStyle HorizontalAlign="Center"></HeaderStyle>
</asp:BoundColumn>
<asp:BoundColumn DataField="fileSize" HeaderText="文件大小">
<HeaderStyle HorizontalAlign="Center"></HeaderStyle>
</asp:BoundColumn>
<asp:TemplateColumn>
<ItemTemplate>
<asp:HyperLink Text="下载" NavigateUrl='<%# String.Format("{0}?downFile={1}",Request.CurrentExecutionFilePath,DataBinder.Eval(Container.DataItem,"ID"))%>' Runat="server">
</asp:HyperLink>
</ItemTemplate>
</asp:TemplateColumn>
<asp:ButtonColumn Text="删除" CommandName="Delete"></asp:ButtonColumn>
</Columns>
</asp:datagrid></form>
<div id="loading" style="display:none;border-left:1px solid #EEEEEE;border-top:1px solid #EEEEEE;border-right:1px solid #666666;border-bottom:1px solid #666666;background-color:#DDDDDD;width:300px;heigth:200px;text-align:center">
正在进行操作，请稍候……
</div>
</body>
</HTML>

当然要在这个文件夹中加入aspnet_wp用户的权限

要加入everyone的可写权限，才可以上传

File1.PostedFile.SaveAs(Server.MapPath("\\Web\\library\\UpFile\\"+FileName));

要在这个文件夹中加入aspnet_wp和everyone用户的权限

调试易

ASP.NET文件上传问题

解决方案 »