14-5 网络编程 ---- TCP网络编程（2）例子3

14-5 网络编程 ---- TCP网络编程（2）例子3

例题3：从客户端发送文件给服务端，服务端保存到本地。并返回“发送成功”给客户端。并关闭相应的连接。
运行步骤：
（1）启动server

（2）再启动client

（3）之后在server会显示发送来的信息

（这里的127.0.0.1为本机，即本机给本机发信息，由本机接收）

代码：

package java1;

import org.junit.Test;

import java.io.*;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;


//实现TCP的网络编程
//例题3：从客户端发送文件给服务端，服务端保存到本地。并返回“发送成功”给客户端。
// 并关闭相应的连接。
public class TCPTest3 {

    @Test
    public void client(){
        Socket socket = null;
        OutputStream os = null;
        FileInputStream fis = null;
        ByteArrayOutputStream baos = null;
        try {
            //1.
            socket = new Socket(InetAddress.getByName("127.0.0.1"),9090);
            //2.
            os = socket.getOutputStream();
            //3.
            fis = new FileInputStream(new File("漂移火辣辣.jpg"));
            //4.
            byte[] buffer = new byte[1024];
            int len;
            while((len = fis.read(buffer)) != -1){
                os.write(buffer,0,len);
            }
            //关闭数据的输出
            socket.shutdownOutput();

            //5.接收来自于服务器端的数据，并显示到控制台上
            InputStream is = socket.getInputStream();
            baos = new ByteArrayOutputStream();
            byte[] bufferr = new byte[20];
            int len1;
            while((len1 = is.read(buffer)) != -1){
                baos.write(buffer,0,len1);
            }

            System.out.println(baos.toString());
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            //6.关闭
            if(fis != null){
                try {
                    fis.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }

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

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

            }
        }

    }


    @Test
    public void server(){
        ServerSocket ss = null;
        Socket socket = null;
        InputStream is = null;
        FileOutputStream fos = null;
        OutputStream os = null;
        try {
            //1.
            ss = new ServerSocket(9090);
            //2.
            socket = ss.accept();
            //3.
            is = socket.getInputStream();
            //4.
            fos = new FileOutputStream(new File("漂移火辣辣2.jpg"));
            //5.
            byte[] buffer = new byte[1024];
            int len;
            while((len = is.read(buffer)) != -1){
                fos.write(buffer,0,len);
            }

            System.out.println("图片传输完成");

            //6.服务器端给予客户端反馈
            os = socket.getOutputStream();
            os.write("照片我已收到，非常好！".getBytes());

        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            //7.关闭
            if(fos != null){
                try {
                    fos.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }

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

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

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

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

            }
        }


    }
}