7.TCP文件上传实现

先把文件复制到根目录：
girl.jpg

 客户端：

 1 package com.Inet.lesson2;
 2 
 3 import java.io.*;
 4 import java.net.InetAddress;
 5 import java.net.Socket;
 6 
 7 public class TcpClientDemo02 {
 8     public static void main(String[] args) throws Exception {
 9         //1.创建一个Socket连接
10         Socket socket = new Socket(InetAddress.getByName("127.0.0.1"), 9000);
11         //2.创建一个输出流
12         OutputStream os = socket.getOutputStream();
13         //3.读取文件
14         FileInputStream fis = new FileInputStream(new File("girl.jpg"));
15         //4.写出文件
16         byte[] buf = new byte[1024];
17         int len;
18         while ((len = fis.read(buf)) != -1) {
19             os.write(buf, 0, len);
20         }
21 
22         //通知服务器，我已经结束了
23         socket.shutdownOutput();//我已经传输完了
24 
25         //确定服务器接收完毕，才能够断开连接
26         InputStream inputStream = socket.getInputStream();
27         //String byte[]
28         ByteArrayOutputStream baos = new ByteArrayOutputStream();
29 
30         byte[] buf2 = new byte[1024];
31         int len2;
32         while ((len2 = inputStream.read(buf2)) != -1) {
33             baos.write(buf2, 0, len2);
34         }
35         System.out.println(baos.toString());
36 
37         //5.关闭资源,先开后关
38         baos.close();
39         inputStream.close();
40         fis.close();
41         os.close();
42         socket.close();
43     }
44 }
服务器端：
 1 package com.Inet.lesson2;
 2 
 3 import java.io.File;
 4 import java.io.FileOutputStream;
 5 import java.io.InputStream;
 6 import java.io.OutputStream;
 7 import java.net.ServerSocket;
 8 import java.net.Socket;
 9 
10 public class TcpServerDemo02 {
11     public static void main(String[] args) throws Exception {
12         //1.创建服务
13         ServerSocket serverSocket = new ServerSocket(9000);
14         //2.监听客户端的连接
15         Socket socket = serverSocket.accept();//阻塞式监听，会一直监听(等待客户端连接)
16         //3.获取输入流
17         InputStream is = socket.getInputStream();
18 
19         //4.文件输出
20         FileOutputStream fos = new FileOutputStream(new File("receive.jpg"));
21 
22         byte[] buffer = new byte[1024];
23         int len;
24         while ((len = is.read(buffer)) != -1) {
25             fos.write(buffer, 0, len);
26         }
27 
28         //通知客户端我接收完毕了
29         OutputStream os = socket.getOutputStream();
30         os.write("我接受完毕了，你可以断开了".getBytes());
31 
32         //关闭资源
33         fos.close();
34         is.close();
35         socket.close();
36         serverSocket.close();
37 
38     }
39 }
测试：
1.先开服务器端，等待接收
2.打开客户端
 
posted @ 2020-03-30 18:06  断浮  阅读(178)  评论(0)  编辑  收藏  举报