java学习之网络编程.doc

java学习之网络编程package com.Java.suting;import java.io.IOException;import java.io.InputStream;import java.NET.Socket;import java.util.Scanner;public class SocketTestpublic static void main(String args)try/新建一个Socket套接字Socket s=new Socket(java.SUN.com,80);tryInputStream inStream=s.getInputStream();Scanner in =new Scanner(inStream);while(in.hasNextLine()String line=in.nextLine();System.out.println(line);finally/关闭一个套接字s.close();catch(IOException e)e.printStackTrace();package com.java.suting;import java.io.*;import .*;import java.util.*;/* This program implements a simple server to port 8189 and echoes back* all client input.*/public class EchoServerpublic static void main(String args)try/establish server socketServerSocket s=new ServerSocket(8189);/wait for client connectionSocket incoming=s.accept();try/inStream接收客户端的输入，outStream输出数据到客户端InputStream inStream=incoming.getInputStream();OutputStream outStream= incoming.getOutputStream();Scanner in=new Scanner(inStream);PrintWriter out=new PrintWriter(outStream,true/*autoflush*/);out.println(Heloo Enter BYE to exit.);/echo client inputboolean done=false;while(!done & in.hasNextLine()String line=in.nextLine();out.println(Echo: + line);if(line.trim().equals(BYE)done=true;finallyincoming.close();catch(IOException e)e.printStackTrace();package com.java.suting;import java.io.*;import .*;import java.util.*;/* This program implements a multithread server that listens to port* 8189 and echoes back all client input*/public class ThreadEchoServerpublic static void main(String args)tryint i=1;ServerSocket s=new ServerSocket(8189);while(true)Socket incoming=s.accept();System.out.println(Spawing +i);/创建一个线程Runnable r=new ThreadedEchoHandler(incoming,i);Thread t=new Thread(r);t.start();i+;catch(IOException e)e.printStackTrace();/* This class handles the client input for one server socket connection* */class ThreadedEchoHandler implements Runnable/* Constructor*/public ThreadedEchoHandler(Socket i,int c)incoming =i;counter=c;Overridepublic void run() / TODO Auto-generated method stubtrytry/inStream接收客户端的输入，outStream输出数据到客户端InputStream inStream=incoming.getInputStream();OutputStream outStream= incoming.getOutputStream();Scanner in=new Scanner(inStream);PrintWriter out=new PrintWriter(outStream,true/*autoflush*/);out.println(Heloo Enter BYE to exit.);/echo client inputboolean done=false;while(!done & in.hasNextLine()String line=in.nextLine();out.println(Echo: + line);if(line.trim().