网络编程之Socket、面试常出现的文件上传

r囧r小猫 2022-04-03 04:00 57阅读 0赞

import java.io.FileOutputStream;  
import java.io.IOException;  
import java.io.InputStream;  
import java.io.OutputStream;  
import java.net.ServerSocket;  
import java.net.Socket;

public class Server \{  
public static void main(String\[\] args) throws IOException \{  
ServerSocket server = null;  
try \{  
server = new ServerSocket(8000);  
System.out.println(“启动成功！”);  
\} catch (IOException e) \{  
System.out.println(“启动服务器出错！”);  
\}  
Socket socket = null;  
try \{  
socket = server.accept();  
\} catch (IOException e) \{  
e.printStackTrace();  
\}  
System.out.println("…连接成功！");  
InputStream in = socket.getInputStream();  
OutputStream out = new FileOutputStream(“D:\\a.txt”);  
byte\[\] ch = new byte\[1024\];  
int len = 0;  
while ((len = in.read(ch)) != -1) \{  
out.write(ch, 0, len);  
\}  
OutputStream outSoc = socket.getOutputStream();  
outSoc.write(“上传成功！”.getBytes());

out.close();
    	server.close();
    	socket.close();
    }

import java.io.BufferedReader;  
import java.io.FileInputStream;  
import java.io.IOException;  
import java.io.InputStream;  
import java.io.InputStreamReader;  
import java.io.OutputStream;  
import java.net.InetAddress;  
import java.net.Socket;  
import java.net.UnknownHostException;

public class Client \{

public static void main(String[] args) throws UnknownHostException, IOException {
    	Socket socket =new Socket(InetAddress.getLocalHost(),8000);
    	InputStream input = new FileInputStream("D:\\a.txt");
    	OutputStream out = socket.getOutputStream();
    	byte[] buf = new byte[1024];
    	int len = 0;
    	while ((len = input.read(buf)) != -1) {
    		out.write(buf, 0, len);
    	}
    	out.flush();
    
    	BufferedReader bufs = new BufferedReader(new InputStreamReader(socket.getInputStream()));
    	System.out.println(new String(bufs.readLine()));
    
    	input.close();
    	socket.close();
    }

截图：![运行结果图][20181220132747412.png]

[20181220132747412.png]: /images/20220403/ba0b1eb764094fa987767d2b68b00634.png