java之TCP(Socket,serverSocket)实例

import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.net.ServerSocket;import java.net.Socket;import java.net.UnknownHostException;import org.junit.Test;public class TestTCP {@Testpublic void rend() throws UnknownHostException, IOException{Socket socket = new Socket("127.0.0.1",9999);int i = (int) (Math.random()*1000);String strMessage = "send:"+i;System.out.println(strMessage);socket.getOutputStream().write(strMessage.getBytes());socket.shutdownOutput();BufferedReader buffRead = new BufferedReader(new InputStreamReader(socket.getInputStream()));String str = buffRead.readLine();System.out.println(str);buffRead.close();socket.close();System.out.println("socket.close()");}@Testpublic void revice() throws IOException{ServerSocket serverSocket = new ServerSocket(9999);boolean flag = true;BufferedReader buffRead = null;Socket socket = null;while(flag){socket = serverSocket.accept();    buffRead = new BufferedReader(new InputStreamReader(socket.getInputStream()));String str = buffRead.readLine();System.out.println(str);socket.shutdownInput();socket.getOutputStream().write(("revice:"+str).getBytes());socket.close();System.out.println("socket.close()");}buffRead.close();serverSocket.close();System.out.println("serverSocket close!");}}