using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Xml.Linq;
using System.IO;
using System.Text;
namespace UpDownFile
{
/// <summary>
/// Service1 的摘要说明
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[ToolboxItem(false)]
// 若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务，请取消对下行的注释。
// [System.Web.Script.Services.ScriptService]
public class UpDownFile : System.Web.Services.WebService
{
private static string filesavepath = System.Configuration.ConfigurationManager.AppSettings.Get("filepath");
/// <summary>
/// 下载文件
/// </summary>
/// <param name="filename"></param>
/// <returns></returns>
[WebMethod]
public bool DownFile(string filename,out byte[] bytes)
{
string filepath = filesavepath + filename;
LogWrite(filepath);
if (File.Exists(filepath))
{
try
{
FileStream s = File.OpenRead(filepath);
bytes = ConvertStreamToByteBuffer(s);
s.Close();
return true;
}
catch
{
bytes = new byte[0];
return false;
}
}
else
{
bytes = new byte[0];
return false;
}
}
public byte[] ConvertStreamToByteBuffer(Stream s)
{
MemoryStream ms = new MemoryStream();
int b;
s.Seek(0, 0);
while ((b = s.ReadByte()) !=-1)
{
ms.WriteByte((byte)b);
}
return ms.ToArray();
}
[WebMethod]
public bool UpFile(byte[] data, string filepath, string filename)
{
try
{
filepath = filesavepath + filepath;
if (!Directory.Exists(filepath))
{
Directory.CreateDirectory(filepath);
}
if (Directory.Exists(filepath))
{
string fullname = filepath + filename;
if (File.Exists(fullname))
{
File.Delete(fullname);
}
FileStream fs = File.Create(fullname);
fs.Write(data, 0, data.Length);
fs.Close();
return true;
}
else return false;
}
catch
{
return false;
}
}
protected bool LogWrite( string content)
{
try
{
//读取
string file = "C:\\11111.txt";
StreamReader sr = new StreamReader(file, true);
string s = sr.ReadLine();
sr.Close();
//写入 与源文件字符相加
StreamWriter sw = new StreamWriter(file, true, Encoding.UTF8);
sw.WriteLine(s + content);
sw.Close();
return true;
}
catch (Exception ex)
{
//Response.Write(ex.Message.ToString());
return false;
}
}
}
}
注意：一定要加 s.Seek(0, 0);否则下载回来的文件数据会有丢失。
转载于:https://www.cnblogs.com/caowei-it/archive/2013/04/11/4145782.html