/// <summary>
/// 文件预览
/// </summary>
/// <param name="fileId">文件ID</param>
/// <returns></returns>
public void PreviewFile(string fileId)
{
var data = fileInfoBLL.GetEntity(fileId);
string filename = Server.UrlDecode(data.F_FileName); //客户端保存的文件名
string filepath = DirFileHelper.GetAbsolutePath(data.F_FilePath); //路径
if (data.F_FileType == "xlsx" || data.F_FileType == "xls")
{
filepath = filepath.Substring(0, filepath.LastIndexOf(".")) + ".pdf";//文件名
if (!DirFileHelper.IsExistFile(filepath))
{
filePreviewIBLL.GetExcelData(DirFileHelper.GetAbsolutePath(data.F_FilePath));
}
}
if (data.F_FileType == "docx" || data.F_FileType == "doc")
{
filepath = filepath.Substring(0, filepath.LastIndexOf(".")) + ".pdf";//文件名
if (!DirFileHelper.IsExistFile(filepath))
{
filePreviewIBLL.GetWordData(DirFileHelper.GetAbsolutePath(data.F_FilePath));
}
}
FileStream files = new FileStream(filepath, FileMode.Open);
byte[] fileByte = new byte[files.Length];
files.Read(fileByte, 0, fileByte.Length);
files.Close();
System.IO.MemoryStream ms = new MemoryStream(fileByte, 0, fileByte.Length);
Response.ClearContent();
switch (data.F_FileType)
{
case "jpg":
Response.ContentType = "image/jpeg";
break;
case "gif":
Response.ContentType = "image/gif";
break;
case "png":
Response.ContentType = "image/png";
break;
case "bmp":
Response.ContentType = "application/x-bmp";
break;
case "jpeg":
Response.ContentType = "image/jpeg";
break;
case "doc":
Response.ContentType = "application/pdf";
break;
case "docx":
Response.ContentType = "application/pdf";
break;
case "ppt":
Response.ContentType = "application/x-ppt";
break;
case "pptx":
Response.ContentType = "application/x-ppt";
break;
case "xls":
Response.ContentType = "application/pdf";
break;
case "xlsx":
Response.ContentType = "application/pdf";
break;
case "pdf":
Response.ContentType = "application/pdf";
break;
case "txt":
Response.ContentType = "text/plain";
break;
case "csv":
Response.ContentType = "";
break;
default:
Response.ContentType = "application/pdf";
break;
}
Response.Charset = "GB2312";
Response.BinaryWrite(ms.ToArray());
}
