Socket基础(1)

/*服务器端代码2013/3/21 星期四 10:51:02*/import java.net.*;import java.io.*;public class TCPServer{public static void main(String[] args)throws Exception{//实例化ServerSocket对象 ,使用8800端口进行连接ServerSocket serverSocket = new ServerSocket(8800);//死循环,无限接受Socket连接while(true){//使用阻塞式的accept()方法接受Socket连接;Socket socket = serverSocket.accept();//getInputStream()方法返回InputStream对象DataInputStream dis = new DataInputStream(socket.getInputStream());String s = dis.readUTF();System.out.println(s);//像客户端输出信息OutputStream os = socket.getOutputStream();DataOutputStream bos = new DataOutputStream(os);bos.writeUTF("Hello Client");dis.close();os.close();bos.flush();bos.close();}}}/*客户端代码2013/3/21 星期四 10:51:34*/import java.net.*;import java.io.*;public class TCPClient{public static void main(String[] args)throws Exception{//实例化一个客户端,连接到IP地址为"127.0.0.1"的计算机的8800端口Socket socket = new Socket("127.0.0.1",8800);//Socket类的getOutputStream()方法返回值为一个OutputStream对象OutputStream os = socket.getOutputStream();DataOutputStream bos = new DataOutputStream(os);bos.writeUTF("Hello Server");DataInputStream dis = new DataInputStream(socket.getInputStream());String s = dis.readUTF();System.out.println(s);os.close();bos.flush();bos.close();dis.close();}}

打开两个控制台分别运行后(先开服务器,再开客户端),会在服务器端的控制台上输出"Hello Server",客户端的控制台上输出"Hello Client"