java Tcp通信客户端与服务器端实例

本文实例讲述了java tcp通信客户端与服务器端。分享给大家供大家参考，具体如下：

由服务器端发送数据

服务器端：

import java.io.*;
import java.net.*;
public class testsocket {
 public static void main(string[] args) {
 try {
  serversocket ss = new serversocket(8888);
  while(true) {
  socket s = ss.accept();
  outputstream os = s.getoutputstream();
  dataoutputstream dos = new dataoutputstream(os);
  dos.writeutf("hello" + s.getinetaddress() + "port" + s.getport() + "beybye");
  dos.close();
//  os.flush();
  os.close();
//  s.close();
  }
 } catch (ioexception e) {
  e.printstacktrace();
  system.out.println("there is a wrong");
 }
 }
}

用户端：

import java.io.*;
import java.net.*;
public class testclient {
 public static void main(string[] args){
 try {
  socket s = new socket("127.0.0.1",8888);
  datainputstream dis = new datainputstream(s.getinputstream());
  system.out.println(dis.readutf()); 
  s.close();
  dis.close();
 } catch (exception e) {
  e.printstacktrace();
 }
 }
}

无论是客户端还是服务器端都可以收发数据。

交互型

用户端

import java.io.*;
import java.net.*;
public class testclient2 {
 public static void main(string[] args){
 try {
  socket s = new socket("127.0.0.1",8886);
  dataoutputstream dos = new dataoutputstream(s.getoutputstream());
  datainputstream dis = new datainputstream(s.getinputstream());
  system.out.println(dis.readutf()); 
  dos.writeutf("hey");
  string str = null;
  if((str = dis.readutf()) != null) {
  system.out.println(str);
  }
  s.close();
  dis.close();
  dos.close();
 } catch (exception e) {
  e.printstacktrace();
 }
 }
}

服务器端：

public class testserver2 {
 public static void main(string[] args) {
 inputstream in = null;
 outputstream out = null;
 try {
  serversocket ss = new serversocket(8886);
  while(true) {
  socket s = ss.accept();
  in = s.getinputstream();
  out = s.getoutputstream();
  dataoutputstream dos = new dataoutputstream(s.getoutputstream());
  datainputstream dis = new datainputstream(s.getinputstream());
  string str = null;
  if((str = dis.readutf() )!= null) {
   system.out.println(str);
   system.out.println("form " + s.getinetaddress());
   system.out.println("port " + s.getport());
//   dos.writeutf("hello" + s.getinetaddress() + "port" + s.getport() + "beybye");
  }
  dos.writeutf("hi hello");
  dis.close();
  dos.close();
  s.close();
  }
 } catch (ioexception e) {
  e.printstacktrace();
  system.out.println("there is a wrong");
 }
 }
}