客户服务器交互简单的例子改进(1)人有待改进

本文介绍了一种单线程服务器的实现方式，该服务器优化了客户端与服务器的连接管理，使得双方在交互过程中无需每次都重新建立连接。同时，文中提供了服务器端与客户端的Java代码示例。

这次的改进解决了客户与服务器每次交互时必须重建连接的问题，但一旦绑定后，其他客户端不能再连接到服务器。这是一个单线程的服务器。

服务器端：

package Server;

import java.io.IOException;
import java.io.ObjectInputStream;
import java.net.ServerSocket;
import java.net.Socket;

import client.user;

public class ServerTest implements Runnable {
private int port;//端口号
private ServerSocket server = null;

public ServerTest(){
  this(8000);
}
public ServerTest(int port){
  this.port = port;

}

public void run() {
  try {
   server = new ServerSocket(port);
   Socket client = server.accept();
   ObjectInputStream ois = new ObjectInputStream(
     client.getInputStream());
   while(true){

    System.out.println(client);

    String str;
    try {
        str = (String)ois.readObject();
       System.out.println(str);
    } catch (ClassNotFoundException e) {
     e.printStackTrace();
    }
   }

  } catch (IOException e1) {
   e1.printStackTrace();
  }finally{
   if(server != null)
    try {
     server.close();
    } catch (IOException e) {
     e.printStackTrace();
    }
  }
}

public static void main(String []args){
  ServerTest s = new ServerTest();
  new Thread(s).start();
}
}

客户端：

package client;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.net.Socket;
import java.net.UnknownHostException;

public class ClientTest implements Runnable{
private String host;
private int port;
private Socket client;
private BufferedReader br;
private ObjectOutputStream oos;

ClientTest(){
  this("172.17.4.20",8000);
}
ClientTest(String IP,int port){
  this.host = IP;
  this.port = port;

  try {
   client = new Socket(host,port);

   br = new BufferedReader(new InputStreamReader(System.in));

   oos = new ObjectOutputStream(client.getOutputStream());

  } catch (UnknownHostException e) {
   e.printStackTrace();
  } catch (IOException e) {
   e.printStackTrace();
  }
}
public void run() {

  String into;
  while(true){
   try {
    into= br.readLine();
    oos.writeObject(into);
    oos.flush();

   } catch (IOException e) {
    e.printStackTrace();
   }
  }
}
public static void main(String []args){
  ClientTest c = new ClientTest();
  new Thread(c).start();
}
}