using System.IO;
////////////////////////////////上传代码开始
Boolean fileOK = true;
String path = Server.MapPath("../upFiles/");
if (!Directory.Exists(path))
Directory.CreateDirectory(path);
String fname = fileUp.FileName;
//判断文件是否已存在
hetongTab = hetongAda.GetDataByFiles(fname);
if (hetongTab.Rows.Count > 0)
{
addimg.Text = "文件已存在！";
return;
}
if (fname != "")
{
//取得文件大小
int filesize = fileUp.PostedFile.ContentLength;
if (filesize > (5120 * 1024) || filesize <= 0)
{
//大于5120K或文件不存在时返回
Response.Write("<script language='javascript'>alert('请确认文件存在且小于5M！');</script>");
return;
}
}
else
{
addimg.Text = "没有文件！";
return;
}
if (fileOK)
{
try
{
//保存文件
fileUp.PostedFile.SaveAs(path + fname);
}
catch (Exception ex)
{
addimg.Text = "文件操作失败";
return;
}
}
////////////////////////////////上传代码结束
------------------------------------------------------------------------------------
--------------------------------------图片上传-----------------------------------
protected void up_click(object sender, EventArgs e)
{
Boolean fileOK = false;
String path = Server.MapPath("../uploadFile/");
if (!Directory.Exists(path))
Directory.CreateDirectory(path);
String url = fileUp.FileName;
if (url != "")
{
//取得文件大小
int filesize = fileUp.PostedFile.ContentLength;
//Response.Write("文件大小：" + filesize+"<br>");
if (filesize > (500 * 1024) || filesize <= 0)
{
//大于500K或文件不存在时返回
Response.Write("<script language='javascript'>alert('请确认图片存在且小于500K！');</script>");
return;
}
}
else
{
Response.Write("<script>alert('没有图片！');</script>");
return;
}
//获得文件扩展名
String fileExtension =
System.IO.Path.GetExtension(fileUp.FileName).ToLower();
//判断文件扩展名是否符合条件
if (fileUp.HasFile)
{
String[] allowedExtensions = { ".gif", ".png", ".jpeg", ".jpg" };
for (int i = 0; i < allowedExtensions.Length; i++)
{
if (fileExtension == allowedExtensions[i])
{
fileOK = true;
}
}
}
//生成唯一文件名
//方案一：利用GUID结构生成唯一文件名
Guid myGuid = Guid.NewGuid();
string NewName = myGuid.ToString();
NewName = NewName.Replace("-", "");
NewName = NewName.ToUpper();
//方案二：利用时间生成新文件名(年+月+日+小时+分钟+秒+毫秒)
//string NewName = DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() + DateTime.Now.Day.ToString() + DateTime.Now.Hour.ToString() + DateTime.Now.Minute.ToString() + DateTime.Now.Second.ToString() + DateTime.Now.Millisecond.ToString();
////方案三 使用文件原来名称作为文件名
//string endFilename = url;
//生成文件名
string endFilename = NewName + fileExtension;
if (fileOK)
{
try
{
//保存文件
fileUp.PostedFile.SaveAs(path + endFilename);
Response.Write("<script>window.returnValue='uploadFile/" + endFilename + "';window.close();</script>");
}
catch (Exception ex)
{
addimg.Text = "文件操作失败";
return;
}
}
else
{
addimg.Text = "<font color=red>文件格式不对.</font>";
return;
}
//if (this.fileUp.HasFile)//判断是否有文件
//{
// if (CheckFileType(fileUp.FileName))//检查上传文件的类型
// {
// string fileUpload = CMS.Util.WebConfigUtility.AppSetting("fileUpload");
// if (!Directory.Exists(CMS.Facade.Htm.Util.rootPath + fileUpload))
// {
// Directory.CreateDirectory(CMS.Facade.Htm.Util.rootPath + fileUpload);
// }
// string fileName = CMS.Util.StringUtility.GetNumberRandom() + System.IO.Path.GetExtension(fileUp.FileName);
// string filePath = fileUpload + "/" + fileName;
// String truePath = CMS.Facade.Htm.Util.rootPath + fileUpload + "\" + fileName;
// fileUp.SaveAs(truePath);//把文件上传到服务器的绝对路径上
// this.msg.Text = "<script>window.returnValue='" + filePath + "';window.close();</script>";
// }
// else
// {
// this.msg.Text = "文件类型不正确!";
// }
//}
}
//用来获取文件类型
public bool CheckFileType(string fileName)
{
//获取文件的扩展名,前提要用这个方法必须引入命名空间io
string ext = System.IO.Path.GetExtension(fileName);
switch (ext.ToLower())
{
case ".gif":
return true;
case ".png":
return true;
case ".jpeg":
return true;
case ".jpg":
return true;
default:
return false;
}
}