此程序能够实现同一网络下多个一对一聊天,必须服务器先启动 ,然后客户端启动并且服务器ip要填正确,并且每个客户端的自身编号必须唯一。
服务器端:
package cn.com.test09; import java.io.DataInputStream; import java.io.DataOutputStream; import java.io.IOException; import java.net.ServerSocket; import java.net.Socket; import java.util.HashMap; import java.util.Set; public class t12 { public static void main(String[] args) { // TODO Auto-generated method stub new ServerOb(8080); } } class ServerOb{ private int port; ServerSocket ss; public ServerOb(int p){ this.port=p; try { ss = new ServerSocket(port); } catch (IOException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } while(true){ try { Socket soc = ss.accept(); new Thread(new clientO(soc)).start(); } catch (IOException e) { // TODO Auto-generated catch block System.out.println(" ServerOb 构造函数 出错"); e.printStackTrace(); } } } } class clientO implements Runnable{ public static HashMap<String, Socket> map= new HashMap<String, Socket>(); private String number = null; private Socket soc; private DataInputStream in; private DataOutputStream out; public clientO(Socket s){ this.soc=s; try { this.in=new DataInputStream(soc.getInputStream()); this.out=new DataOutputStream(soc.getOutputStream()); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } getKey(); } public String getNumber(){ try { number=in.readUTF(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } return number; } public void getKey(){ map.put(getNumber(), soc);//得到帐号保存Map Set<String> ke = map.keySet(); if(ke!=null) try { out.writeUTF(ke.toString()); out.flush(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } @Override public void run() { // TODO Auto-generated method stub while(true){ getOtherNumber(); } } public void getOtherNumber(){ try { String oth = in.readUTF(); String value = in.readUTF(); Socket other = map.get(oth); String str=number +"对你说:\r\n"+value; DataOutputStream asd = new DataOutputStream(other.getOutputStream()); asd.writeUTF(str); asd.flush(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }
客户端:
package cn.com.test09; import java.io.BufferedReader; import java.io.DataInputStream; import java.io.DataOutputStream; import java.io.IOException; import java.io.InputStreamReader; import java.net.Socket; import java.net.UnknownHostException; public class t13 { public static void main(String[] args) { new ClientOO("192.168.0.105",8080,"1");//服务器ip 服务器端口 自身编号 } } class ClientOO{ private String path; private int port; private String name; private DataInputStream in; private DataOutputStream out; public ClientOO(String path,int port,String name){ this.path=path; this.port=port; this.name=name; try { Socket s=new Socket(path,port); this.in=new DataInputStream(s.getInputStream()); this.out=new DataOutputStream(s.getOutputStream()); } catch (UnknownHostException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } send(); hhhhh(); } public void send(){ String s = null; try { out.writeUTF(name); out.flush(); s=in.readUTF(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } System.out.println("在线列表:"+s); } public void hhhhh(){ new MyServerReader1(in).start(); new MyServerWriter1(out).start(); } } class MyServerReader1 extends Thread { private DataInputStream dis; public MyServerReader1(DataInputStream dis) { this.dis = dis; } public void run() { String info; try { while (true) { // 如果对方,即客户端没有说话,那么就会阻塞到这里, // 这里的阻塞并不会影响到其他线程 info = dis.readUTF(); // 如果状态有阻塞变为非阻塞,那么就打印接受到的信息 System.out.println("对方说: " + info); if (info.equals("bye")) { System.out.println("对方下线,程序退出!"); System.exit(0); } } } catch (IOException e) { e.printStackTrace(); } } } // 从键盘获得输入流并写入信息到客户端 class MyServerWriter1 extends Thread { private DataOutputStream dos; public MyServerWriter1(DataOutputStream dos) { this.dos = dos; } public void run() { // 读取键盘输入流 InputStreamReader isr = new InputStreamReader(System.in); // 封装键盘输入流 BufferedReader br = new BufferedReader(isr); String info; try { while (true) { info = br.readLine(); dos.writeUTF(info); dos.flush(); if (info.equals("bye")) { System.out.println("自己下线,程序退出!"); System.exit(0); } } } catch (IOException e) { e.printStackTrace(); } } }