Client端：
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.Scanner;
public class ChatClient {
private static final String SERVER_IP = "127.0.0.1";
private static final int SERVER_PORT = 8888;
Socket socket = null;
DataOutputStream dos = null;
DataInputStream dis = null;
private boolean bConnected = false;
private static Scanner in = new Scanner(System.in);
private static String hostInfo = null;
Thread tRecv = new Thread(new RecvThread());
public static void main(String[] args) {
new ChatClient().launch();
}
public void launch() {
connect();
tRecv.start();
}
public void connect() {
try {
socket = new Socket(SERVER_IP, SERVER_PORT);
dos = new DataOutputStream(socket.getOutputStream());
dis = new DataInputStream(socket.getInputStream());
bConnected = true;
InetAddress addr = InetAddress.getLocalHost();
String ip = addr.getHostAddress().toString();// 获得本机IP
String address = addr.getHostName().toString();// 获得本机名称
hostInfo = ip + "\t" + address + "\tconnected.";
System.out.println(hostInfo);
dos.writeUTF(hostInfo);
dos.flush();
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public void disconnect() throws IOException {
try {
dos.close();
dis.close();
socket.close();
} catch (IOException e) {
}
}
private class RecvThread implements Runnable {
public void run() {
while (bConnected) {
try {
if (in.hasNext()) {
String talk = in.nextLine();
if (talk.equals("quit")) {
disconnect();
bConnected = false;
break;
}
dos.writeUTF(talk);
dos.flush();
}
String talk = dis.readUTF();
System.out.println(talk);
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
server端：
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.EOFException;
import java.io.IOException;
import java.net.BindException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;
import java.util.List;
public class ChatServer {
boolean started = false;
ServerSocket ss = null;
List<Client> clients = new ArrayList<Client>();
public static void main(String[] args) {
new ChatServer().start();
}
public void start() {
try {
ss = new ServerSocket(8888);
started = true;
} catch (BindException e) {
System.err.println("port in use.please stop program using this port and restart.");
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 connected.");
new Thread(c).start();
clients.add(c);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
ss.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
class Client implements Runnable {
private Socket s;
private DataInputStream dis = null;
private DataOutputStream dos = null;
private boolean bConnected = false;
public 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);
System.out.println("a client quit.");
//e.printStackTrace();
}
}
public void run() {
try {
while(bConnected) {
String str = dis.readUTF();
solveTalk(str);
}
} catch (EOFException e) {
System.out.println("Client closed!");
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if(dis != null) dis.close();
if(dos != null) dos.close();
if(s != null) {
s.close();
s = null;
}
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
private void solveTalk(String talk) {
System.out.println(talk);
for(int i=0;i<clients.size();i++) {
Client c = clients.get(i);
c.send(talk);
}
}
}
}
posted @
2015-08-18 10:03 marchalex 阅读(358) |
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import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class RegexTestHarnessV4 {
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(
new InputStreamReader(new BufferedInputStream(System.in))
);
while (true) {
System.out.print("\nEnter your regex: ");
Pattern pattern = Pattern.compile(br.readLine());
System.out.print("Enter input string to search: ");
Matcher matcher = pattern.matcher(br.readLine());
boolean found = false;
while (matcher.find()) {
System.out.println("I found the text \"" + matcher.group() +
"\" starting at index " + matcher.start() +
" and ending at index " + matcher.end() +
".");
found = true;
}
if (!found) {
System.out.println("No match found.");
}
}
}
}
样例：
Enter your regex: [0-9]+
Enter input string to search: fdsdffd9090fd
I found the text "9090" starting at index 7 and ending at index 11.
Enter your regex: class="fav-num[^"]*"[^>]*>[^<]*
Enter input string to search: <i class="litb-icon-fav-on"></i><i class="litb-icon-fav-off"></i><span class="fav-num">(151)</span>
I found the text "class="fav-num">(151)" starting at index 71 and ending at index 92.
资料：
http://blog.csdn.net/yaerfeng/article/details/28855587
posted @
2015-08-12 13:58 marchalex 阅读(309) |
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