import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.PrintStream;
import java.net.Socket;
public class ConnectionThread extends Thread
{
Socket client;
int counter;
String defaultPath;
//constructor
public ConnectionThread(Socket sock, int count, String defPath) {
client = sock;
counter = count;
defaultPath = defPath;
}
//check the request method is "GET" or not
private boolean getRequest(String requestLine) {
if (requestLine.length() > 0) {
if (requestLine.substring(0, 3).equalsIgnoreCase("GET")) {
return true;
}
}
return false;
}
//get file name from client request
private String getFileName(String requestLine) {
String fileName = requestLine.substring(requestLine.indexOf(' ')+1);
fileName = fileName.substring(0, fileName.indexOf(' '));
try {
if (fileName.charAt(0) == '/') {
fileName = fileName.substring(1);
}
} catch(StringIndexOutOfBoundsException e) {
System.out.println("Exception" + e.toString());
}
//default web page
if (fileName.equals("")) {
fileName = "index.html";
}
return fileName;
}
//send file to client
private void sendFile(PrintStream outStream, File file) {
try {
//read file in stream
DataInputStream inStream = new DataInputStream(new FileInputStream(file));
int length = (int)file.length();
byte buf[] = new byte[length];
inStream.readFully(buf);
outStream.write(buf, 0, length);
outStream.close();
inStream.close();
} catch(Exception e) {
System.out.println("Error retrieving file!!");
System.exit(1);
}
}
//analysis the client request ,and response
public void run() {
try {
String destip = client.getInetAddress().toString();
int destport = client.getPort();
System.out.println("Connection" + counter + ": connected to " + destip + " on port " + destport + ".");
PrintStream outStream = new PrintStream(client.getOutputStream());
DataInputStream inStream = new DataInputStream(client.getInputStream());
String inline = inStream.readLine();
System.out.println("Received : " + inline);
if (getRequest(inline)) {
String fileName = getFileName(inline);
File file = new File(defaultPath + fileName);
if (file.exists()) {
System.out.println(fileName + " requested.");
outStream.println("HTTP/1.1 200 OK");
outStream.println("MIME-version:1.0");
outStream.println("Content-Type:text/html");
int length = (int)file.length();
outStream.println("Content-Length:"+length);
outStream.println("");
sendFile(outStream, file);
outStream.flush();
}
}
else {
String errorReq = "<html><head><title>Not Found</title><body><h1>Error 404 not found</h1></body></html>";
outStream.println("HTTP/1.1 404 no found");
outStream.println("Content-Type:text/html");
outStream.println("Content-Length:" + (errorReq.length()+2));
outStream.println("");
outStream.println(errorReq);
outStream.flush();
}
client.close();
} catch(Exception e) {
}
}
}
WebServer_Java.rar （20个子文件） 
www.pudn.com.txt 218B
WebServer bin 
default.html 95B images 
stephen.jpg 100KB
lena.bmp 257KB
WebServer.class 1KB index.html 99B ConnectionThread.class 4KB gallery.html 133B notfound.html 130B src default.html 95B images stephen.jpg 100KB lena.bmp 257KB ConnectionThread.java 3KB index.html 99B WebServer.java 755B gallery.html 133B notfound.html 130B .project 385B .classpath 232B
Readme.doc 27KB资源评论
JonSco
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