java网络上传文件小例子

旧城等待， 2022-08-13 16:58 155阅读 0赞

使用tcp连接

客户端

package net.upload;
    
    import java.io.BufferedReader;
    import java.io.File;
    import java.io.FileReader;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.io.PrintWriter;
    import java.net.Socket;
    import java.net.UnknownHostException;
    
    public class Client {
    
    	public static void main(String[] args) throws UnknownHostException, IOException {
    		System.out.println("upload...");
    		
    		File file = new File("c:\\client.txt");
    		//要和客户端一致
    		Socket socket = new Socket("10.1.35.73",10007);
    		
    		BufferedReader bufr = new BufferedReader(new FileReader(file));
    		
    		PrintWriter pw = new PrintWriter(socket.getOutputStream(), true);
    		
    		String line = null;
    		while((line=bufr.readLine())!=null){
    			pw.println(line);
    		}
    		//告诉服务端客户端写完了
    		socket.shutdownOutput();
    		
    		BufferedReader bufin = new BufferedReader(new InputStreamReader(socket.getInputStream()));
    		
    		String str = bufin.readLine();
    		System.out.println(str);
    		
    		bufr.close();
    		socket.close();
    	}
    
    }

服务端

package net.upload;
    
    import java.io.BufferedReader;
    import java.io.BufferedWriter;
    import java.io.FileWriter;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.io.PrintWriter;
    import java.net.ServerSocket;
    import java.net.Socket;
    
    public class Server {
    
    	public static void main(String[] args) throws IOException {
    		System.out.println("上传中....");
    		ServerSocket socket= new ServerSocket(10007);
    		Socket s = socket.accept();
    		BufferedReader bufin = new BufferedReader(new InputStreamReader(s.getInputStream()));
    		
    		BufferedWriter bw = new BufferedWriter(new FileWriter("c:\\server.txt"));
    		
    		String line = null;
    		while((line=bufin.readLine())!=null){
    			bw.write(line);
    			bw.newLine();
    			bw.flush();
    		}
    		
    		PrintWriter pw = new PrintWriter(s.getOutputStream(), true);
    		//打给客户端
    		pw.println("上传成功");
    		
    		bw.close();
    		s.close();
    		socket.close();
    	}
    
    }