TCP 文字交互----InetAddress.getByName \ Socket

客户端

package Liu.talk;

import java.io.IOException;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.Socket;

/**
 * 客户端
 *
 * @author liu
 */
public class TcpClient {
    public static void main(String[] args) {
        //1需要一个IP和端口
        InetAddress serverIP = null;
        Socket socket = null;
        OutputStream os = null;
        try {
            serverIP = InetAddress.getByName("127.0.0.1");

            int port = 9999;
            //2创建一个socket连接
            socket = new Socket(serverIP, port);
            //3发送消息
            os = socket.getOutputStream();
            os.write("啊所发生的富商大贾水电费水电费水电费是电费".getBytes());
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (os != null) {
                try {
                    os.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }

            if (socket != null) {
                try {
                    socket.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}

服务器

package Liu.talk;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.ServerSocket;
import java.net.Socket;

/**
 * 服务器
 *
 * @author liu
 */
public class TcpServer {
    public static void main(String[] args) {
        ServerSocket serverSocket = null;
        Socket accept = null;
        InputStream is = null;
        ByteArrayOutputStream baos = null;
        try {
            //1我得有一个IP和端口
            serverSocket = new ServerSocket(9999);
            //2等待客户端连接过来
            accept = serverSocket.accept();
            //3读取客户端的消息
            is = accept.getInputStream();
        /* //输入文字，会乱码
        int count = 0;
        byte[] A=new byte[1];
        while ((count = is.read(A)) != -1) {
            System.out.println(new String(A,0,count));
        }*/
            //管道流
            baos = new ByteArrayOutputStream();
            int count = 0;
            byte[] A = new byte[1];
            while ((count = is.read(A)) != -1) {
                baos.write(A, 0, count);
            }
            System.out.println(baos.toString());
            serverSocket.close();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            //关闭资源
            if (baos != null) {
                try {
                    baos.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (is != null) {
                try {
                    is.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (accept != null) {
                try {
                    accept.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (serverSocket != null) {
                try {
                    serverSocket.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }

    }
}