java 网络编程之传输文件

 1 package 菜鸟教程.网络编程.网络编程之传输文件;
 2 
 3 import java.io.*;
 4 import java.net.InetAddress;
 5 import java.net.ServerSocket;
 6 import java.net.Socket;
 7 
 8 /**
 9  * 服务器-用来接收文件
10  */
11 public class FileServer {
12     public static void main(String[] args) {
13         //自己的ip地址
14         String ip = InetAddress.getLoopbackAddress().getHostAddress();
15         int port = 33999;
16         ServerSocket ss = null;
17         try {
18             ss = new ServerSocket(port);
19             Socket s = ss.accept();//接收从服务器传来的文件
20 //            InputStream in;
21 
22             //接收的文件以ip地址为名显示
23             String cip = s.getRemoteSocketAddress().toString().replace(".", "").replace(":", "") + ".jpg";
24             System.out.println(cip);
25 
26             BufferedInputStream bis = new BufferedInputStream(s.getInputStream());
27 
28             //输出显示接收到的文件
29 //            File file;
30             try {
31                 FileOutputStream fos = new FileOutputStream("C:/Users/zhj/Desktop" + cip);
32                 byte[] buf = new byte[1024];
33                 int len = -1;
34                 while ((len = bis.read(buf)) != -1) {
35                     fos.write(buf, 0, len);
36                 }
37                 fos.close();
38             } catch (IOException e) {
39                 e.printStackTrace();
40             }
41 
42         } catch (IOException e) {
43             e.printStackTrace();
44         }
45 
46 
47     }
48 }

package 菜鸟教程.网络编程.网络编程之传输文件;

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

/**
 * 客户端-用来发送文件
 */
public class FileClient {
    public static void main(String[] args) {
        String server_ip = "Localhost";//地址是谁,就发给谁,此处设的是本机
        int port = 33999;
        try {
//            ServerSocket ss = new ServerSocket(port);
            Socket s = new Socket(server_ip, port);
            OutputStream os = s.getOutputStream();
            //向服务器发送文件
//            File file;
            FileInputStream fis = new FileInputStream("src/Images/peo.png");//发送给服务器的文件地址
            //
            byte[] buf = new byte[1024];//每次以1kb传输
            int len = -1;
            while ((len = fis.read(buf)) != -1) {
                os.write(buf, 0, len);

            }
            os.flush();
            os.close();


        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}