import java.io.DataInputStream
import java.io.InputStreamReader
import java.io.OutputStream
import java.io.DataOutputStream
import java.io.BufferedReader
import java.net.ServerSocket
import java.net.Socket
import java.io.IOException
import java.util.Date
class Server
{
public Server()
{
try
{
ServerSocket s=new ServerSocket(8888)
Socket ss=s.accept()
OutputStream out=ss.getOutputStream()
DataOutputStream dout=new DataOutputStream(out)
InputStream in=ss.getInputStream()
DataInputStream din=new DataInputStream(in)
System.out.print(din.readUTF()+"!")
dout.writeUTF("你已经连接到服务器"+"\t"+"你的地址："+ss.getInetAddress()+"\t"
+"你的链接端口："+ss.getLocalPort()+"\n")
new ReadMessage(din).start()
new SendMessage(dout).start()
}
catch (IOException e)
{
e.printStackTrace()
}
}
public static void main(String[] args)
{
new Server()
}
}
//接受客户端信息
class ReadMessage extends Thread
{
private DataInputStream din
public ReadMessage(DataInputStream din)
{
this.din=din
}
public void run()
{
String str
try
{
while (true)
{
str=din.readUTF()
System.out.println(new Date().toLocaleString()+"客户端说："+str)
if (str.equals("bye"))
{
System.out.println("客户端下线！")
break
}
}
}
catch (IOException e)
{
e.printStackTrace()
}
}
}
// 发出服务器信息
class SendMessage extends Thread
{
private DataOutputStream dout
public SendMessage(DataOutputStream dout)
{
this.dout=dout
}
public void run()
{
InputStreamReader inr=new InputStreamReader(System.in)
BufferedReader buf=new BufferedReader(inr)
String str
try
{
while(true)
{
str=buf.readLine()
dout.writeUTF(str)
if (str.equals("bye"))
{
System.out.println("服务器退出！")
System.exit(1)
}
}
}
catch (IOException e)
{
e.printStackTrace()
}
}
}
import java.io.InputStream
import java.io.DataInputStream
import java.io.InputStreamReader
import java.io.OutputStream
import java.io.DataOutputStream
import java.io.BufferedReader
import java.net.Socket
import java.io.IOException
import java.util.Date
class Client
{
public Client()
{
try
{
Socket s=new Socket("192.168.1.2",8888)
InputStream in=s.getInputStream()
DataInputStream din=new DataInputStream(in)
OutputStream out=s.getOutputStream()
DataOutputStream dout=new DataOutputStream(out)
dout.writeUTF("服务器你好！我是客户端")
System.out.println(din.readUTF())
new Thread(new SenderMessage(dout)).start()
new Thread(new ReaderMessage(din)).start()
}
catch (IOException e)
{
e.printStackTrace()
}
}
public static void main(String[] args)
{
new Client()
}
}
class ReaderMessage implements Runnable
{
private DataInputStream din
public ReaderMessage(DataInputStream din)
{
this.din=din
}
public void run()
{
String str
try
{
while(true)
{
str=din.readUTF()
System.out.println(new Date().toLocaleString()+"服务器说："+str)
if (str.equals("bye"))
{
System.out.println("服务器已经关闭，此程序自动退出！")
break
}
}
}
catch (IOException e)
{
e.printStackTrace()
}
}
}
class SenderMessage implements Runnable
{
private DataOutputStream dout
public SenderMessage(DataOutputStream dout)
{
this.dout=dout
}
public void run()
{
String str
InputStreamReader inf=new InputStreamReader(System.in)
BufferedReader buf=new BufferedReader(inf)
try
{
while (true)
{
str=buf.readLine()
dout.writeUTF(str)
if (str.equals("bye"))
{
System.out.println("客户端自己退出！")
System.exit(1)
}
}
}
catch (IOException e)
{
e.printStackTrace()
}
}
}
【ClientSocketDemo.java 客户端Java源代码】import java.net.*
import java.io.*
public class ClientSocketDemo
{
//声明客户端Socket对象socket
Socket socket = null
//声明客户器端数据输入输出流
DataInputStream in
DataOutputStream out
//声明字符串数组对象response，用于存储从服务器接收到的信息
String response[]
//执行过程中，没有参数时的构造方法，本地服务器在本地，取默认端口10745
public ClientSocketDemo()
{
try
{
//创建客户端socket，服务器地址取本地，端口号为10745
socket = new Socket("localhost",10745)
//创建客户端数据输入输出流，用于对服务器端发送或接收数据
in = new DataInputStream(socket.getInputStream())
out = new DataOutputStream(socket.getOutputStream())
//获取客户端地址及端口号
String ip = String.valueOf(socket.getLocalAddress())
String port = String.valueOf(socket.getLocalPort())
//向服务器发送数据
out.writeUTF("Hello Server.This connection is from client.")
out.writeUTF(ip)
out.writeUTF(port)
//从服务器接收数据
response = new String[3]
for (int i = 0i <response.lengthi++)
{
response[i] = in.readUTF()
System.out.println(response[i])
}
}
catch(UnknownHostException e){e.printStackTrace()}
catch(IOException e){e.printStackTrace()}
}
//执行过程中，有一个参数时的构造方法，参数指定服务器地址，取默认端口10745
public ClientSocketDemo(String hostname)
{
try
{
//创建客户端socket，hostname参数指定服务器地址，端口号为10745
socket = new Socket(hostname,10745)
in = new DataInputStream(socket.getInputStream())
out = new DataOutputStream(socket.getOutputStream())
String ip = String.valueOf(socket.getLocalAddress())
String port = String.valueOf(socket.getLocalPort())
out.writeUTF("Hello Server.This connection is from client.")
out.writeUTF(ip)
out.writeUTF(port)
response = new String[3]
for (int i = 0i <response.lengthi++)
{
response[i] = in.readUTF()
System.out.println(response[i])
}
}
catch(UnknownHostException e){e.printStackTrace()}
catch(IOException e){e.printStackTrace()}
}
//执行过程中，有两个个参数时的构造方法，第一个参数hostname指定服务器地址
//第一个参数serverPort指定服务器端口号
public ClientSocketDemo(String hostname,String serverPort)
{
try
{
socket = new Socket(hostname,Integer.parseInt(serverPort))
in = new DataInputStream(socket.getInputStream())
out = new DataOutputStream(socket.getOutputStream())
String ip = String.valueOf(socket.getLocalAddress())
String port = String.valueOf(socket.getLocalPort())
out.writeUTF("Hello Server.This connection is from client.")
out.writeUTF(ip)
out.writeUTF(port)
response = new String[3]
for (int i = 0i <response.lengthi++)
{
response[i] = in.readUTF()
System.out.println(response[i])
}
}
catch(UnknownHostException e){e.printStackTrace()}
catch(IOException e){e.printStackTrace()}
}
public static void main(String[] args)
{
String comd[] = args
if(comd.length == 0)
{
System.out.println("Use localhost(127.0.0.1) and default port")
ClientSocketDemo demo = new ClientSocketDemo()
}
else if(comd.length == 1)
{
System.out.println("Use default port")
ClientSocketDemo demo = new ClientSocketDemo(args[0])
}
else if(comd.length == 2)
{
System.out.println("Hostname and port are named by user")
ClientSocketDemo demo = new ClientSocketDemo(args[0],args[1])
}
else System.out.println("ERROR")
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
【ServerSocketDemo.java 服务器端Java源代码】
import java.net.*
import java.io.*
public class ServerSocketDemo
{
//声明ServerSocket类对象
ServerSocket serverSocket
//声明并初始化服务器端监听端口号常量
public static final int PORT = 10745
//声明服务器端数据输入输出流
DataInputStream in
DataOutputStream out
//声明InetAddress类对象ip，用于获取服务器地址及端口号等信息
InetAddress ip = null
//声明字符串数组对象request，用于存储从客户端发送来的信息
String request[]
public ServerSocketDemo()
{
request = new String[3]//初始化字符串数组
try
{
//获取本地服务器地址信息
ip = InetAddress.getLocalHost()
//以PORT为服务端口号，创建serverSocket对象以监听该端口上的连接
serverSocket = new ServerSocket(PORT)
//创建Socket类的对象socket，用于保存连接到服务器的客户端socket对象
Socket socket = serverSocket.accept()
System.out.println("This is server:"+String.valueOf(ip)+PORT)
//创建服务器端数据输入输出流，用于对客户端接收或发送数据
in = new DataInputStream(socket.getInputStream())
out = new DataOutputStream(socket.getOutputStream())
//接收客户端发送来的数据信息，并显示
request[0] = in.readUTF()
request[1] = in.readUTF()
request[2] = in.readUTF()
System.out.println("Received messages form client is:")
System.out.println(request[0])
System.out.println(request[1])
System.out.println(request[2])
//向客户端发送数据
out.writeUTF("Hello client!")
out.writeUTF("Your ip is:"+request[1])
out.writeUTF("Your port is:"+request[2])
}
catch(IOException e){e.printStackTrace()}
}
public static void main(String[] args)
{
ServerSocketDemo demo = new ServerSocketDemo()
}
}
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