如何批量下载数据库中的记录
每条记录生成一个word文件，然后批量下载，如何实现呢？使用asp.net + oracle,最好能以压缩包的形式下载，不知道是否能够实现 --------------------编程问答-------------------- 补充一下:插叙符合条件的记录，然后每条记录生成一个word文件，最后以压缩包的形式下载，不知道能否实现，请大侠帮忙，谢谢 --------------------编程问答-------------------- 帮顶 --------------------编程问答-------------------- 谢谢顶贴，继续关注 --------------------编程问答-------------------- 为什么要生成单个word呢？可以生成以“,”号分隔的csv文件，文件压缩后又小，又好处理，可以用web服务或wcfhttp://www.mybuffet.cn --------------------编程问答-------------------- 需要的就是这个功能啊，为了满足别人的要求啊，我也没做过类似的功能，所以请教高手啊，不知道容易实现吗？ --------------------编程问答-------------------- 插叙符合条件的记录，然后每条记录生成一个word文件，最后以压缩包的形式下载，不知道能否实现
先把文件保存到文件夹。然后打包文件夹这个是可以做到的。
--------------------编程问答--------------------
using System;
using System.Text;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;
using System.Collections;
using System.IO;
using System.IO.Compression;
namespace GzipHelper
{
public class ZipHelper
{
public static bool CompressFile(string sourceFile, string destinationFile)
{
bool isSuccess = false;
// make sure the source file is there
if (File.Exists(sourceFile) == false)
throw new FileNotFoundException();
// Create the streams and byte arrays needed
byte[] buffer = null;
FileStream sourceStream = null;
FileStream destinationStream = null;
GZipStream compressedStream = null;
try
{
// Read the bytes from the source file into a byte array
sourceStream = new FileStream(sourceFile, FileMode.Open, FileAccess.Read, FileShare.Read);
// Read the source stream values into the buffer
buffer = new byte[sourceStream.Length];
int checkCounter = sourceStream.Read(buffer, 0, buffer.Length);
if (checkCounter != buffer.Length)
{
throw new ApplicationException();
}
// Open the FileStream to write to
destinationStream = new FileStream(destinationFile, FileMode.OpenOrCreate, FileAccess.Write);
// Create a compression stream pointing to the destiantion stream
compressedStream = new GZipStream(destinationStream, CompressionMode.Compress, true);
// Now write the compressed data to the destination file
compressedStream.Write(buffer, 0, buffer.Length);
isSuccess = true;
}
catch (Exception ex)
{
isSuccess = false;
}
finally
{
// Make sure we allways close all streams
if (sourceStream != null)
sourceStream.Close();
if (compressedStream != null)
compressedStream.Close();
if (destinationStream != null)
destinationStream.Close();
}
return isSuccess;
}
public static bool DecompressFile(string sourceFile, string destinationFile)
{
bool isSuccess = false;
// make sure the source file is there
if (File.Exists(sourceFile) == false)
throw new FileNotFoundException();
// Create the streams and byte arrays needed
FileStream sourceStream = null;
FileStream destinationStream = null;
GZipStream decompressedStream = null;
byte[] quartetBuffer = null;
try
{
// Read in the compressed source stream
sourceStream = new FileStream(sourceFile, FileMode.Open);
// Create a compression stream pointing to the destiantion stream
decompressedStream = new GZipStream(sourceStream, CompressionMode.Decompress, true);
// Read the footer to determine the length of the destiantion file
quartetBuffer = new byte[4];
int position = (int)sourceStream.Length - 4;
sourceStream.Position = position;
sourceStream.Read(quartetBuffer, 0, 4);
sourceStream.Position = 0;
int checkLength = BitConverter.ToInt32(quartetBuffer, 0);
byte[] buffer = new byte[checkLength + 100];
int offset = 0;
int total = 0;
补全
--------------------编程问答-------------------- 思路：读取一条记录-》生成文件（循环）-》利用ICSharpCode.SharpZipLib.dll压缩所有文件（方法http://blog.csdn.net/polarissky/archive/2009/12/14/5005030.aspx） --------------------编程问答-------------------- 用程序根据遍历的结果生成一个.zip文件如可使用gzip,
// Read the compressed data into the buffer
while (true)
{
int bytesRead = decompressedStream.Read(buffer, offset, 100);
if (bytesRead == 0)
break;
offset += bytesRead;
total += bytesRead;
}
// Now write everything to the destination file
destinationStream = new FileStream(destinationFile, FileMode.Create);
destinationStream.Write(buffer, 0, total);
// and flush everyhting to clean out the buffer
destinationStream.Flush();
isSuccess = true;
}
catch (Exception ex)
{
isSuccess = false;
}
finally
{
// Make sure we allways close all streams
if (sourceStream != null)
sourceStream.Close();
if (decompressedStream != null)
decompressedStream.Close();
if (destinationStream != null)
destinationStream.Close();
}
return isSuccess;
}
public static bool CompressFolder(string dirPath, string fileName)
{
bool isSuccess = false;
try
{
SerializeFileInfo list = getStream(dirPath);
IFormatter formatter = new BinaryFormatter();
using (Stream s = new MemoryStream())
{
formatter.Serialize(s, list);
s.Position = 0;
CreateCompressFile(s, fileName);
isSuccess = true;
}
}
catch (ApplicationException ex)
{
isSuccess = false;
}
finally
{
}
return isSuccess;
}
public static bool DecompressFolder(string fileName, string dirPath)
{
bool isSuccess = false;
try
{
using (Stream source = File.OpenRead(fileName))
{
using (Stream destination = new MemoryStream())
{
using (GZipStream input = new GZipStream(source, CompressionMode.Decompress, true))
{
byte[] bytes = new byte[4096];
int n;
while ((n = input.Read(bytes, 0, bytes.Length)) != 0)
{
destination.Write(bytes, 0, n);
}
}
destination.Flush();
destination.Position = 0;
DeSerializeFiles(destination, dirPath);
}
}
}
catch (ApplicationException ex)
{
isSuccess = false;
}
finally
{
}
return isSuccess;
}
private static SerializeFileInfo getStream(string dirPath)
{
SerializeFileInfo list = new SerializeFileInfo("", "folder", null);
list.FileName = dirPath.Substring(dirPath.LastIndexOf(Path.DirectorySeparatorChar) + 1);
foreach (string f in Directory.GetFiles(dirPath))
{
byte[] destBuffer = File.ReadAllBytes(f);
SerializeFileInfo sfi = new SerializeFileInfo(f,"file", destBuffer);
list.Add(sfi);
}
foreach (string f in Directory.GetDirectories(dirPath))
{
SerializeFileInfo sfi = getStream(dirPath + "\\" + f.Substring(f.LastIndexOf(Path.DirectorySeparatorChar)+1));
sfi.Type = "folder";
list.Add(sfi);
}
return list;
}
private static void DeSerializeFiles(Stream s, string dirPath)
{
BinaryFormatter b = new BinaryFormatter();
ArrayList list = (ArrayList)b.Deserialize(s);
setStream(list,dirPath);
}
private static void setStream(ArrayList list,string dirPath)
{
foreach (SerializeFileInfo f in list)
{
if (f.Type == "file")
{
SerializeFileInfo sfi = f as SerializeFileInfo;
if (!Directory.Exists(dirPath))
{
Directory.CreateDirectory(dirPath);
}
string newName = dirPath + "\\" + Path.GetFileName(sfi.FileName);
using (FileStream fs = new FileStream(newName, FileMode.Create, FileAccess.Write))
{
fs.Write(sfi.FileBuffer, 0, sfi.FileBuffer.Length);
fs.Close();
}
}
if (f.Type == "folder")
{
setStream(f, dirPath + "\\" + f.FileName);
}
}
}
private static void CreateCompressFile(Stream source, string destinationName)
{
using (Stream destination = new FileStream(destinationName, FileMode.Create, FileAccess.Write))
{
using (GZipStream output = new GZipStream(destination, CompressionMode.Compress))
{
byte[] bytes = new byte[4096];
int n;
while ((n = source.Read(bytes, 0, bytes.Length)) != 0)
{
output.Write(bytes, 0, n);
}
}
}
}
[Serializable]
private class SerializeFileInfo : ArrayList
{
public SerializeFileInfo(string name, string type, byte[] buffer)
{
fileName = name;
fileBuffer = buffer;
strType = type;
}
string fileName;
string strType;
public string FileName
{
get
{
return fileName;
}
set
{
fileName = value;
}
}
public string Type
{
get
{
return strType;
}
set
{
strType = value;
}
}
byte[] fileBuffer;
public byte[] FileBuffer
{
get
{
return fileBuffer;
}
}
}
}
}
SharpZipLib,winrar然后再下载. --------------------编程问答-------------------- 怎样写入word效果比较好呢？ --------------------编程问答-------------------- 每一个记录都是一个文件，我靠，这么强大，什么需求，不会是楼主你自己想出来的吧。 --------------------编程问答--------------------
想法不错，帮你了 --------------------编程问答-------------------- 我可没时间胡思乱想，是上帝要求的功能，求助了啊 --------------------编程问答-------------------- Up
补充：.NET技术 , ASP.NET
