java TCP协议多线程传输（文件传输1对多）

电玩女神 2023-06-05 11:09 80阅读 0赞

今天来写一个简单的多线程传输，一个服务器，一个客户端传送基本数据，一个客户端传输文件  
服务器线程端

package com.sheng.tetst1;
    //网络编程多线程
    
    import java.io.BufferedReader;
    import java.io.DataInputStream;
    import java.io.DataOutputStream;
    import java.io.File;
    import java.io.FileOutputStream;
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.InputStreamReader;
    import java.io.OutputStream;
    import java.io.PrintWriter;
    import java.net.Socket;
    import java.nio.Buffer;
    
    public class ServerThread extends Thread {
    	Socket socket = null;
    
    	public ServerThread(Socket socket) {
    		this.socket = socket;
    	}
    
    	// 执行线程的操作
    	public void run() {
    
    		File file2 = new File("C:\\Users\\lenovo\\Desktop\\Demo3\\6661.txt");
    		try {
    			DataInputStream dis = new DataInputStream(socket.getInputStream());
    			DataOutputStream dos = new DataOutputStream(new FileOutputStream(file2));
    			// DataOutputStream dos1 = new DataOutputStream(socket.getOutputStream());
    			byte[] buf = new byte[1024 * 9];
    			int len = 0;
    
    			// 获取输出流
    			OutputStream os = socket.getOutputStream();
    			PrintWriter pw = new PrintWriter(os);
    			pw.write("你好帅");
    
    			while ((len = dis.read(buf)) != -1) {
    				System.out.println(new String(buf, 0, len));
    
    			}
    			pw.flush();
    			pw.close();
    			dos.flush();
    			System.out.println("文件接受结束，，，，");
    			dis.close();
    			dos.close();
    
    		} catch (IOException e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}
    
    	
    	}
    
    }

服务器端

package com.sheng.tetst1;
    
    import java.net.InetAddress;
    import java.net.ServerSocket;
    import java.net.Socket;
    
    public class Server {
    	
    	public static void main(String[] args) {
    		//创建一个服务器端的ServerSocket,指定绑定的端口
    		try {
    			int count=0;
    			ServerSocket serverSocket=new ServerSocket(8888);
    			//开始监听
    			System.out.println("服务器启动");
    			Socket socket=null;
    			while(true) {
    				socket=serverSocket.accept();
    				ServerThread serverThread=new ServerThread(socket);
    				serverThread.start();
    				count++;
    				System.out.println("客户端的数量是："+count);
    				
    				InetAddress address=socket.getInetAddress();
    				System.out.println("当前客户的ip地址是："+address);
    				
    			}
    			
    		} catch (Exception e) {
    			e.printStackTrace();
    		}
    	}
    }

客户端1：传送基本数据

package com.sheng.tetst1;
    
    import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.InputStreamReader;
    import java.io.OutputStream;
    import java.io.PrintWriter;
    import java.net.Socket;
    import java.net.UnknownHostException;
    
    //
    public class Client {
    	public static void main(String[] args) {
    		try {
    			//1.创建客户端Socket,指定服务器地址和端口
    			Socket socket=new Socket("localhost",8888);
    			//2.获取输出流
    			System.out.println("我是客户端");
    			OutputStream os=socket.getOutputStream();
    			PrintWriter pw=new PrintWriter(os);
    			pw.write("我是客户端1");
    			pw.flush();
    			socket.shutdownOutput();
    			
    			//3.获取输入流
    			InputStream is=socket.getInputStream();
    			InputStreamReader isr=new InputStreamReader(is);
    			BufferedReader br=new BufferedReader(isr);
    			String data=null;
    			while((data=br.readLine())!=null) {
    				System.out.println("客户端："+data);
    			}
    			socket.shutdownInput();
    			
    		    //4.关闭资源
    			br.close();
    			isr.close();
    			is.close();
    			pw.close();
    			os.close();
    			socket.close();
    		} catch (UnknownHostException e) {
    			e.printStackTrace();
    		} catch (IOException e) {
    			e.printStackTrace();
    		}
     
    	}
    
    }

客户端2：传输文件

package com.sheng.tetst1;
    
    import java.io.DataInputStream;
    import java.io.DataOutputStream;
    import java.io.File;
    import java.io.FileInputStream;
    import java.net.Socket;
    
    //客户端发送文件
    public class ClientFile {
    	public static void main(String[] args) throws Exception {
    		Socket socket=new Socket("127.0.0.1",8888);
    		try {
    			File file=new File("C:\\Users\\lenovo\\Desktop\\Demo3\\666.txt");
    			System.out.println("传输的文件大小为："+file.length()+"kb");
    			DataInputStream dis=new DataInputStream(new FileInputStream(file));
    			DataOutputStream dos=new DataOutputStream(socket.getOutputStream());
    			byte[] bys=new byte[1024];
    			int len=0;
    			while((len=dis.read(bys))!=-1) {
    				dos.write(bys,0,len);
    			}
    			dos.flush();
    			System.out.println("文件上传结束");
    			dis.close();
    			dos.close();
    			
    		} catch (Exception e) {
    			e.printStackTrace();
    		}
    	}
    }