java socket线程通信

关于socket线程通信的一些知识整理

一般我们需要要让两台机子进行通信，需要创建一个Server 类，一个Client类，还需要创建一个线程类

server

public class Server {
 public static void main(String[] args) throws IOException {
  ServerSocket ss = new ServerSocket(8888);
  int num=0;
  System.out.println("服务器即将启动,   等待客户端启动。。。。。。");
  while (true) {
   Socket s = ss.accept();
   ServerThread t = new ServerThread(s);
   // 启动线程
   t.start();
   num++;
   InetAddress ad= InetAddress.getLocalHost();
   System.out.println(ad+"当前访问网站人数:"+num);
  }
 }

接着 接着创建Client

public class Client {
 public static void main(String[] args) throws UnknownHostException, IOException {
  Socket s=new Socket("localhost",8888);
//  获取字节输出流
//  s.geto
  OutputStream str= s.getOutputStream(); 
  PrintWriter pw=new PrintWriter(str);
  pw.write("user:admin:1112,    password:12364");
  pw.flush();
  s.shutdownOutput();
  InputStream st= s.getInputStream();
  InputStreamReader read=new InputStreamReader(st);
  BufferedReader buf=new BufferedReader(read);
  String s1=buf.readLine();
   System.out.println("我是客户端，  服务端返回相应数据："+s1);
  buf.close();
  read.close();
  st.close();
  pw.close();
  str.close();
 }

最后创建一个线程类

public class ServerThread extends Thread{
 public ServerThread(Socket sockrt) {
  super();
  this.sockrt = sockrt;
 }
 Socket sockrt;
 public void run()
 {
  Server s=new Server();
  InputStream str = null;
  try {
   str = sockrt.getInputStream();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  InputStreamReader read = null;
  try {
   read = new InputStreamReader(str,"gbk");
  } catch (UnsupportedEncodingException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  BufferedReader buf=new BufferedReader(read);
  String lin = null;
  try {
   lin = buf.readLine();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  while(lin!=null)
  {
   System.out.println(" 我是服务器：客户端说:"+lin);
   try {
    lin=buf.readLine();
   } catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
  }
  try {
   sockrt.shutdownInput();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  OutputStream stream = null;
  try {
   stream = sockrt.getOutputStream();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  PrintWriter pw=new PrintWriter(stream);
  pw.write("欢迎您");
  pw.flush();
  pw.close();
  try {
   stream.close();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  try {
   read.close();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  try {
   str.close();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  try {
   sockrt.close();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
 }

这样既可实现多用户访问服务器