/// <summary>
/// 用户上传文件
/// </summary>
/// <param name="context">上下文</param>
private void SaveAsFile(HttpContext context)
{
context.Response.ContentType = "text/plain";
context.Response.Charset = "utf-8";
try
{
HttpPostedFile postedFile = context.Request.Files["Filedata"];
if (postedFile != null)
{
string configPath = ConfigManager.UploadPath; //获取配置的文件保存虚拟路径
string fileExt = GetFileExt(postedFile.FileName); //文件扩展名，不含“.”
long fileSize = postedFile.ContentLength; //获得文件大小，以字节为单位
string fileName = postedFile.FileName.Substring(postedFile.FileName.LastIndexOf(@"\") + 1); //取得原文件名
string randomFileName = String.Format("{0}.{1}", StringHelper.GetPrimaryKey(), fileExt); //获取文件新名称，随机数
AttachInfo attach = new AttachInfo();
//检查文件扩展名是否合法
if (!CheckFileExt(fileExt))
{
attach.code = ReturnCode.Error.ToInt();
attach.msg = "文件格式不合法！";
context.Response.Write(JsonHelper.JSSerialize(attach));
return;
}
string virPath = GetUpLoadPath(configPath); //相对路径
string phyPath = GetMapPath(string.Format("~{0}", virPath)); //绝对路径
//检查上传的物理路径是否存在，不存在则创建
if (!Directory.Exists(phyPath))
{
Directory.CreateDirectory(phyPath);
}
//检查是否为图片
if (CheckImage(fileExt))
{
//如果当前文件大小大于1M,则进行文件压缩
if (fileSize >= (Math.Pow(1024, 2)))
{
byte[] imges = Thumbnail.CompressionImage(postedFile.InputStream, 16L);
File.WriteAllBytes(Path.Combine(phyPath, randomFileName), imges);
}
else
{
postedFile.SaveAs(string.Format("{0}{1}", phyPath, randomFileName));//保存文件
}
}
else
{
postedFile.SaveAs(string.Format("{0}{1}", phyPath, randomFileName));//保存文件
}
string attachPath = string.Format("{0}{1}", virPath, randomFileName);
attach.code = ReturnCode.Succ.ToInt();
attach.msg = "上传成功！";
attach.path = attachPath;
attach.name = fileName;
attach.size = fileSize;
attach.extension = fileExt;
context.Response.Write(JsonHelper.SerializeObject(attach));
}
else
{
context.Response.Write("0");
}
}
catch (Exception ex)
{
AttachInfo attach = new AttachInfo();
attach.code = ReturnCode.Error.ToInt();
attach.msg = ex.Message;
attach.path = "";
attach.name = "";
attach.size = 0;
attach.extension = "";
context.Response.Write(JsonHelper.SerializeObject(attach));
}
}
