Posted on 2009-07-16 13:14
Hero 阅读(481)
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C#积累
1
using System;
2using System.Collections.Generic;
3using System.Text;
4using System.IO;
5
6namespace Server
7
{
8
class PictureHelper
9
{
10 public static string[] GetFileList()
11 {
12 //注意得到的是完整的路径名称
13 string[] files = Directory.GetFiles( Properties.Settings.Default.PictureDirectory );
14
15 //remove the directory path from the filename
16 for ( int i = 0; i < files.Length; i++ )
17 {
18 files[i] = Path.GetFileName( files[i] );
19
}
20
21 return files;
22 }
23
24 //返回图片文件的字节数组
25 public static byte[] GetPictureBytes( string filename )
26 {
27 //通过FileInfo来获得文件的长度
28 FileInfo fileInfo = new FileInfo( filename );
29 byte[] buffer = new byte[fileInfo.Length];
30 using ( FileStream fileStream = fileInfo.OpenRead() )
31 {
32 fileStream.Read( buffer, 0, buffer.Length );
33 }
34
35 return buffer;
36 }
37
38 //在字节数组中返回文件列表
39 public static byte[] GetFileListBytes()
40 {
41 string[] files = PictureHelper.GetFileList();
42
43 StringBuilder responseMessage = new StringBuilder();
44
45 foreach ( string str in files )
46 {
47 responseMessage.Append( str );
48 responseMessage.Append( ":" );
49 }
50
51 byte[] responseBuffer = Encoding.ASCII.GetBytes( responseMessage.ToString() );
52
53 return responseBuffer;
54 }
55 }
56
}
57
1using System;
2using System.Collections.Generic;
3using System.Windows.Forms;
4using System.Net;
5using System.Net.Sockets;
6using System.IO;
7
8namespace Server
9{
10 static class Program
11 {
12 /**//// <summary>
13 /// 应用程序的主入口点。
14 /// </summary>
15 [STAThread]
16 static void Main()
17 {
18 //Application.EnableVisualStyles();
19 //Application.SetCompatibleTextRenderingDefault( false );
20 //Application.Run( new Form1() );
21
22 //新建一个监听器
23 TcpListener listener = new TcpListener(IPAddress.Any, Properties.Settings.Default.Port);
24
25 listener.Start();//开始监听
26
27 while ( true )
28 {
29 const int bufferSize = 256;
30
31 //创建一个客户端
32 TcpClient client = listener.AcceptTcpClient();
33 //从客户端获得网络流
34 NetworkStream stream = client.GetStream();
35
36 //从客户端网络流中读取查询数据
37 byte[] buffer = new byte[bufferSize];
38 //记录实际获得的字节数
39 int readBytes = 0;
40 readBytes = stream.Read( buffer, 0, bufferSize );
41 //获得查询字符串
42 string request = (System.Text.Encoding.ASCII.GetString( buffer )).Substring( 0, readBytes );
43
44 if ( request.StartsWith( "LIST" ) )
45 {//如果请求的是列表
46
47 byte[] responseBuffer = PictureHelper.GetFileListBytes();
48
49 stream.Write( responseBuffer, 0, responseBuffer.Length );
50 }
51 else if ( request.StartsWith( "FILE" ) )
52 {//如果请求的是文件
53
54 //获得要下载的文件名字
55 string[] requestMessage = request.Split( ':' ) ;
56 string filename = requestMessage[1];
57
58 //string curpath = (( Properties.Settings.Default.PictureDirectory ).ToString() + @"\" + filename );
59 //curpath = @"D:\Picture\" + filename ;
60 //byte[] data = File.ReadAllBytes( curpath );
61
62 string curpath = Path.Combine( Properties.Settings.Default.PictureDirectory, filename );
63 MessageBox.Show( curpath.ToString() );
64 //从绝对路径中获取文件的全部字节流
65 byte[] data = File.ReadAllBytes( curpath );
66
67 //将图片发送给客户端
68 stream.Write( data, 0, data.Length );
69 }
70
71 //不要忘记关闭流
72 stream.Close();
73 client.Close();
74 }
75 }
76 }
77}