MultiThreaded web server

[sn128]

Hi, I am very new to java and trying to make this server multithreaded to handle repeated concurrent requests. I would a new thread to handle each connection.

Help would be great

Many Thanks



import java.io.*;
import java.net.*;
import java.util.*;

class Web extends Thread
{
public static void main(String[] args) throws Exception
{
String requestMessageLine;
String fileName;
ServerSocket listenSocket = new ServerSocket(8005);
while(true){
Socket connectionSocket = listenSocket.accept();

BufferedReader inFromClient =
new BufferedReader(new InputStreamReader(
connectionSocket.getInputStream()));
DataOutputStream outToClient =
new DataOutputStream(
connectionSocket.getOutputStream());

requestMessageLine = inFromClient.readLine();
StringTokenizer tokenizedLine =
new StringTokenizer(requestMessageLine);

if (tokenizedLine.nextToken().equals("GET&quot)
{
fileName = tokenizedLine.nextToken();

if ( fileName.startsWith("/&quot==true )
fileName = fileName.substring(1);
File file = new File(fileName);
int numOfBytes = (int)file.length();
FileInputStream inFile = new FileInputStream(fileName);

byte[] fileInBytes = new byte[numOfBytes];
inFile.read(fileInBytes);

/* Send the HTTP header */
outToClient.writeBytes("HTTP/1.1 200 Document Follows\r\n"

if (fileName.endsWith(".jpg&quot)
outToClient.writeBytes("Content-Type: image/jpeg\r\n"

if (fileName.endsWith(".gif&quot)
outToClient.writeBytes("Content-Type: image/gif\r\n"

if (fileName.endsWith(".html&quot)
outToClient.writeBytes("Content-Type: html/jpeg\r\n"

outToClient.writeBytes("Content-Length: " + numOfBytes + "\r\n"
outToClient.writeBytes("\r\n"

/* Now send the actual data */
outToClient.write(fileInBytes, 0, numOfBytes);
connectionSocket.close();

}
else
System.out.println("Bad Request Message"
}

}
}

 

[crust]

Search the java.sun.com site for "webserver" There you can find a multi-threaded java webserver written for you. I have used it, and there are a few bugs in the source code.

First there's a &quot;/&quot; for the comment at the top of the code. And when the server is listing a directory, there is a &quot;<&quot; missing in one of the html strings.