/// <summary>
/// Decompress the byte array previously returned by
/// compress
/// </summary>
public static byte[] Decompress(sbyte[] value, int offset, int length)
{
// Create an expandable byte array to hold the decompressed data
ByteArrayOutputStream bos = new ByteArrayOutputStream(length);
Inflater decompressor = SharpZipLib.CreateInflater();
try
{
decompressor.SetInput((byte[])(Array)value);
// Decompress the data
byte[] buf = new byte[1024];
while (!decompressor.IsFinished)
{
int count = decompressor.Inflate(buf);
bos.Write(buf, 0, count);
}
}
finally
{
}
return(bos.ToArray());
}
/// <summary>
/// Compresses the specified byte range using the
/// specified compressionLevel (constants are defined in
/// java.util.zip.Deflater).
/// </summary>
public static byte[] Compress(sbyte[] value, int offset, int length, int compressionLevel)
{
/* Create an expandable byte array to hold the compressed data.
* You cannot use an array that's the same size as the orginal because
* there is no guarantee that the compressed data will be smaller than
* the uncompressed data. */
ByteArrayOutputStream bos = new ByteArrayOutputStream(length);
Deflater compressor = SharpZipLib.CreateDeflater();
try
{
compressor.SetLevel(compressionLevel);
compressor.SetInput((byte[])(Array)value, offset, length);
compressor.Finish();
// Compress the data
var buf = new byte[1024];
while (!compressor.IsFinished)
{
int count = compressor.Deflate(buf);
bos.Write(buf, 0, count);
}
}
finally
{
}
return(bos.ToArray());
}
/// <summary>Decompress the byte array previously returned by
/// compress
/// </summary>
public static byte[] Decompress(byte[] value_Renamed)
{
// Create an expandable byte array to hold the decompressed data
System.IO.MemoryStream bos = new System.IO.MemoryStream(value_Renamed.Length);
Inflater decompressor = SharpZipLib.CreateInflater();
try
{
decompressor.SetInput(value_Renamed);
// Decompress the data
byte[] buf = new byte[1024];
while (!decompressor.IsFinished)
{
int count = decompressor.Inflate(buf);
bos.Write(buf, 0, count);
}
}
finally
{
}
return(bos.ToArray());
}
/// <summary>
/// 下载文件方法
/// </summary>
/// <param name="data">二进制流</param>
/// <param name="fileName">文件名</param>
/// <param name="fileType">后缀后</param>
protected virtual void OutputStream(byte[] data, string fileName, string fileType)
{
byte[] attachment = SharpZipLib.DeCompress(data);
FineOffice.Web.FileTypeHelper typeHelper = new FineOffice.Web.FileTypeHelper();
Response.Clear();
Response.Buffer = true;
Response.Charset = "utf-8";
Response.AddHeader("Content-Disposition", "attachment; filename=" + typeHelper.ToHexString(fileName + "." + fileType));
Response.AddHeader("Content-Length", attachment.Length.ToString());
Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8");
Response.OutputStream.Write(attachment, 0, attachment.Length);
Response.Flush();
}
protected void btnDownAttachment_Click(object sender, EventArgs e)
{
int id = int.Parse(attachmentGrid.DataKeys[attachmentGrid.SelectedRowIndex][0].ToString());
FineOffice.Modules.OA_Attachment model = attBll.GetModel(d => d.ID == id);
byte[] attachmentData = SharpZipLib.DeCompress(model.AttachmentData);
FineOffice.Web.FileTypeHelper typeHelper = new FineOffice.Web.FileTypeHelper();
Response.Clear();
Response.Buffer = true;
Response.Charset = "utf-8";
Response.AddHeader("Content-Disposition", "attachment; filename=" + typeHelper.ToHexString(model.FileName + "." + model.XType));
Response.AddHeader("Content-Length", attachmentData.Length.ToString());
Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8");
Response.OutputStream.Write(attachmentData, 0, attachmentData.Length);
Response.Flush();
}
protected void btnDownForm_Click(object sender, EventArgs e)
{
int id = int.Parse(formGrid.DataKeys[formGrid.SelectedRowIndex][0].ToString());
FineOffice.Modules.OA_FlowRunData model = runDataBll.GetModel(d => d.ID == id);
byte[] formData = SharpZipLib.DeCompress(model.FormData);
this.Response.Clear();
this.Response.Buffer = true;
this.Response.Charset = "utf-8";
this.Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(model.Title + "." + model.XType));
this.Response.AddHeader("Content-Length", formData.Length.ToString());
this.Response.ContentType = "application/msword";
this.Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8");
this.Response.OutputStream.Write(formData, 0, formData.Length);
this.Response.Flush();
}
internal DeflateCompressor(int level)
{
Compressor = SharpZipLib.CreateDeflater();
Compressed = new byte[64];
}
internal DeflateDecompressor()
{
decompressor = SharpZipLib.CreateInflater();
Compressed = new byte[0];
}
