?? threadedserver.java
字號:
package NetWorkpractice;
import java.io.*;
import java.net.*;
public class ThreadedServer {
public static void main(String[] args){
int i=1,PORT = 8000;
ServerSocket server = null;
Socket client = null;
try{
server = new ServerSocket(PORT);
System.out.println("Web server is listening on port"+ server.getLocalPort());
for(;;){
client = server.accept();
new ConnectionThread(client,i).start();
i++;
}
}
}
class ConnectionThread extends Thread{
Socket client;
int counter;
public ConnectionThread(Socket c1,int c){
client = c1;
counter =c;
}
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());
BufferedReader instream = new BufferedReader(new InputStreamReader(client.getInputStream()));
String inline = instream.readLine();
System.out.println("Recieved:"+ inline);
if(getrequest(inline)){
String filename = getfilename(inline);
File file =new File(filename);
if(file.exists()){
System.out.println(filename+" requested.");
outstream.println("HTTP/1.0 200 OK");
outstream.println("MIME_version:1.0");
outstream.println("Content_Type:text/html");
int len = (int)file.length();
outstream.println("Content_Length:"+ len);
outstream.println("");
sendfile(outstream,file);
outstream.flush();
}
else{
String notfound ="<html><head><title>Not Found</title></head>" +
"<body><h1>Error 404-file not found</h1></body></html>";
outstream.println("HTTP/1.0 404 no found");
outstream.println("Content_Type:text/html");
outstream.println("Conten_length:"+notfound.length()+2);
outstream.println("");
outstream.println(notfound);
outstream.flush();
}
}
long m1=1;
while(m1<11100000){m1++;}
client.close();
}
catch(IOException e){
System.out.println("Exceptiong:"+e);
}
}
boolean getrequest(String s){
if(s.length()>0)
{
if(s.substring(0,3).equalsIgnoreCase("GET")) return true;
}
return false;
}
String getfilename(String s){
String f = s.substring(s.indexOf(' ')+1);
f= f.substring(0,f.indexOf(' '));
try{
if(f.charAt(0)=='/');
f=f.substring(1);
}
catch(StringIndexOutOfBoundsException e){
System.out.println("Exception:"+e);
}
if(f.equals(""))f="index.html";
return f;
}
void sendfile(PrintStream outs,File file){
try{
DataInputStream in = new DataInputStream(new FileInputStream(file));
int len=(int)file.length();
byte buf[] = new byte[len];
in.readFully(buf);
outs.write(buf,0,len);
outs.flush();
outs.close();
}
catch(Exception e){
System.out.println("Error retrieving file.");
System.exit(1);
}
}
}
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