基于ANDROID的socket聊天室服务器

package com.Server;
import java.io.*;
import .*;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.*;
import javax.swing.JOptionPane;
public class Server {
ServerSocket ss = null;
private String getnameString=null;
boolean started = false;
List<Client> clients = new ArrayList<Client>();
public static void main(String[] args) {
String inputport = JOptionPane.showInputDialog("请输入服务器所用的端口:");
int port = Integer.parseInt(inputport);
new Server().start(port);
}
public void start(int port) {
try {
ss = new ServerSocket(port);
System.out.println("服务器启动");
started = true;
} catch (BindException e) {
System.out.println(" 端口已经被占用");
System.exit(0);
}
catch (IOException e) {
e.printStackTrace();
}
try {
while (started) {
Socket s = ss.accept();
Client c = new Client (s);
System.out.println("a client is connected");
new Thread(c).start();
clients.add(c);
}
} catch (IOException e) {
e.printStackTrace();
}
finally {
try {
ss.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
public List<Client> getClient(){
return clients;
}
class Client implements Runnable{
private Socket s = null;
private DataInputStream dis = null;
private DataOutputStream dos = null;
private boolean bConnected = false;
private String sendmsg=null;
Client (Socket s) {
this.s = s;
try {
dis = new DataInputStream (s.getInputStream());
dos = new DataOutputStream (s.getOutputStream());
bConnected = true;
} catch(IOException e) {
e.printStackTrace();
}
}
public void send (String str) {
try {
dos.writeUTF(str+"");
dos.flush();
} catch(IOException e) {
clients.remove(this);
}
}
public void run() {
try {
while (bConnected) {
String str=dis.readUTF();
DateFormat df = new SimpleDateFormat("MM-dd hh:mm");
String date = " ["+df.format(new Date())+"]";
if(str.startsWith("online:")){
getnameString = str.substring(7);
for (int i=0; i<clients.size(); i++) {
Client c = clients.get(i);
c.send(getnameString+" on line."+date);
}
System.out.println(getnameString+" on line."+date);
}else if(str.startsWith("offline:")){
getnameString = str.substring(8);
clients.remove(this);
for (int i=0; i<clients.size(); i++) {
Client c = clients.get(i);
c.send(getnameString+" off line."+date);
}
System.out.println(getnameString+" off line."+date);
}
else{
int charend = str.indexOf("end;");
String chatString = str.substring(charend+4);
String chatName = str.substring(5, charend);
sendmsg=chatName+date+"\n"+chatString;
for (int i=0; i<clients.size(); i++) {
Client c = clients.get(i);
c.send(sendmsg);
}
System.out.println(sendmsg);
}
}
} catch (SocketException e) {
System.out.println("a client is closed!");
clients.remove(this);
} catch (EOFException e) {
System.out.println("a client is closed!");
clients.remove(this);
}
catch (IOException e) {
e.printStackTrace();
}
finally {
try {
if (dis != null) dis.close();
if (dos != null) dos.close();
if (s != null) s.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}。