simple webserver by java, socket exam

학교에서 교수가 강의하기 귀찮았는지 이런걸 시키고는 가버리는-_-;;

자바를 알지도 못하는데 자바로 하라고 -_- ㅆ ㅑ       0

아까워서 여따올린다.

import java.net.*;

import java.io.*;

import java.util.*;

class webserver

{

public static void main( String args[] )

{

System.out.println( "Web server start..." );

try

{

ServerSocket sSocket = new ServerSocket( 80 );

while ( true )

{

Socket cSocket = sSocket.accept();

BufferedReader br = ( new BufferedReader( ( new InputStreamReader( ( new BufferedInputStream( cSocket.getInputStream() ) ) ) ) ) );

// Get File name and extension

StringTokenizer st = new StringTokenizer( br.readLine() ); st.nextToken();

String FileName = st.nextToken();

if ( FileName.equalsIgnoreCase( "/" ) )

{

FileName = "/index.html";

}

FileName = FileName.substring( 1 );

st = new StringTokenizer( FileName, "." ); st.nextToken();

String FileExt = st.nextToken();

// Initialize Header

File file = new File( FileName );

int FileSize = FileSize = ( int )( file.length() );

String Header = "HTTP/1.0 ";

byte[] buffer = new byte[ FileSize ];

if ( file.exists() )

{

Header += ( "200 OK\r\nContent-Type: " + getContentType( FileExt ) + "\r\n" +

"Content-Length: " + FileSize + "\r\n" );

FileInputStream fis = new FileInputStream( FileName );

BufferedInputStream bis = new BufferedInputStream( fis );

bis.read( buffer, 0, FileSize );

bis.close(); fis.close();

}

else

{

Header += "404 Object Not Found\r\n";

}

Header += "Server: Tinyweb/0.1\r\n";

Header += "\r\n";

System.out.println( "Request-File: " + FileName );

System.out.println( Header );

OutputStream os = cSocket.getOutputStream();

os.write( Header.getBytes() );

os.write( buffer );

os.close();

cSocket.close();

}

}

catch ( Exception e )

{

System.out.println( e );

}

}

public static String getContentType( String Ext )

{

String cType = "text/plain";

if ( Ext.equalsIgnoreCase( "htm" ) )

{

Ext = "html";

}

if ( Ext.equalsIgnoreCase( "js" ) )

{

cType = "application/x-javascript";

}

else if ( Ext.equalsIgnoreCase( "exe" ) || Ext.equalsIgnoreCase( "vbs" ) || Ext.equalsIgnoreCase( "bat" ) || Ext.equalsIgnoreCase( "sys" ) )

{

cType = "application/octet-stream";

}

else if ( Ext.equalsIgnoreCase( "html" ) || Ext.equalsIgnoreCase( "css" ) )

{

cType = "text/" + Ext;

}

else if ( Ext.equalsIgnoreCase( "gif" ) || Ext.equalsIgnoreCase( "png" ) ||

Ext.equalsIgnoreCase( "jpeg" ) || Ext.equalsIgnoreCase( "jpg" ) ||

Ext.equalsIgnoreCase( "bmp" ) )

{

cType = "image/" + Ext;

}

return cType;

}

};