一种方式
/// <summary>
/// 上传文件/// </summary>
/// <param name="filepathLevel">上传文件的路径层</param>
/// <param name="filepath">根目录下文件存在的路径</param>
/// <param name="filename">文件名称,默认null</param>
/// <param name="fileFormat">文件格式(以,分隔)</param>
/// <param name="maxAmount">文件大小(MB计算)</param>
/// <param name="fud">上传组件名</param>
/// <param name="fileIsExists">是否必需上传</param>
/// <returns></returns>
public static string FileUpload(string filepathLevel, string filepath, string filename, string fileFormat, int maxAmount, FileUpload fud,bool fileIsExists)
{
bool formatStatus = false;
string eorrStr = "";
string strText = null;
string tmpfilepath = System.Web.HttpContext.Current.Server.MapPath(filepathLevel) + filepath;
string tmpfilename;
if (filename == null) ///默认名称
{ tmpfilename = DateTime.Now.ToString("yyyyMMddhhmmss") + DateTime.Now.Millisecond.ToString(); }
else
{ tmpfilename = filename; }
///---------------------------创建文件夹---------------------------
//HttpContext.Current.Server.MapPath(相对路径)：把相对路径转为服务器上的绝对路径。File.Exists(绝对路径)：检查是否存在绝对路径指向的文件或目录。
if (!File.Exists(tmpfilepath))
{
System.IO.Directory.CreateDirectory(tmpfilepath); //System.IO.Directory.CreateDirectory(文件夹绝对路径)：建立绝对路径文件夹。
}
///------------------------------写入上传文件--------------------------------
if (fud.HasFile)
{
try
{
string[] strTpye = fud.FileName.Split('.');
if (strTpye.Length > 1)
{
int i_split = strTpye.Length - 1;
string format = strTpye[i_split];
string[] sArray = fileFormat.Split(',');
foreach (string i in sArray)
{
if (format.ToLower() == i.ToString())
{
formatStatus = true;
break;
}
}
///------------------判断文件格式--------------------
if (formatStatus == false)
{
eorrStr += "只能上传" + fileFormat + "格式文件";
}
///------------------判断大小--------------------
int tmpmaxAmount = maxAmount * 1024 * 1024;
if (fud.PostedFile.ContentLength > tmpmaxAmount)
{
eorrStr += "上传不能超过" + maxAmount + "MB";
}
///------------------写入文件--------------------
if (eorrStr == "")
{
string savepath = tmpfilepath + tmpfilename + "." + format;
if (!File.Exists(savepath)) //不存在就写入
{
fud.SaveAs(tmpfilepath + tmpfilename + "." + format);
}
strText = filepath + tmpfilename + "." + format;
}
}
else
{
eorrStr += "只能上传" + fileFormat + "格式文件";
}
// 显示文件信息
//str += "<br/>Saved As: " + FileUpload1.PostedFile.FileName;
//str += "<br/>File Type: " + FileUpload1.PostedFile.ContentType;
//str += "<br/>File Length (bytes): " + FileUpload1.PostedFile.ContentLength;
//str += "<br/>PostedFile File Name: " + FileUpload1.PostedFile.FileName;
// fud.SaveAs(filepath + FileUpload1.FileName);
//str += "Uploading file: " + FileUpload1.FileNam
}
catch (Exception ex)
{
eorrStr += "<b>Error:</b>Unable to save :" + fud.FileName + "<br/>" + ex.Message;
}
}
else
{
if (fileIsExists == true) ///必需上传文件
{
eorrStr = "No file uploaded.";
}
}
if (eorrStr != "")
{ JScript.Alert(eorrStr); }
return strText;
}
二种方式
//upload.aspx
<form name="form1" action="Save.aspx" method="post" enctype="multipart/form-data">
<INPUT type="file" id="File1" name="File1">
<input type="submit" name="submit" value="保存">
</form>
private void Page_Load(object sender, System.EventArgs e)
{
if( Request.Files.Count == 0 ) {
Response.Write("<script>alert('请选择上传文件！');</script>");
Response.End();
return;
}
System.Web.HttpPostedFile file = Request.Files[0];
String fileName = Request["fileName"];
String save_path = "./attached/";
String ext = System.IO.Path.GetExtension( file.FileName ).ToLower();
Response.Write(ext);
if( !System.IO.Directory.Exists( Server.MapPath( save_path ) ) )
System.IO.Directory.CreateDirectory( Server.MapPath( save_path ) );
if( ext == ".jpg" || ext == ".gif" || ext == ".bmp" || ext == ".png" ) {
file.SaveAs( Server.MapPath( save_path + fileName ) );
Response.Write("<script type=""text/javascript"">parent.KindInsertImage('" + save_path + fileName + "','" + Request["imgWidth"] + "','" + Request["imgHeight"] + "','" + Request["imgBorder"] + "');</script>'");
Response.End();
}
else {
Response.Write("<script>alert('文件格式不支持！');</script>");
Response.End();
}
}