java Socket 文件传输

喜欢ヅ旅行 2022-09-17 15:17 257阅读 0赞

客户端：

import java.io.DataOutputStream;
    import java.io.File;
    import java.io.FileInputStream;
    import java.io.IOException;
    import java.net.InetSocketAddress;
    import java.net.Socket;
    
    /**
     * 文件发送客户端主程序
     * @author admin_Hzw
     *
     */
    public class BxClient {
    	
    	/**
    	 * 程序main方法
    	 * @param args
    	 * @throws IOException
    	 */
    	public static void main(String[] args) throws IOException {
    		int length = 0;
    		double sumL = 0 ;
    		byte[] sendBytes = null;
    		Socket socket = null;
    		DataOutputStream dos = null;
    		FileInputStream fis = null;
    		boolean bool = false;
    		try {
    			File file = new File("D:/天啊.zip"); //要传输的文件路径
    			long l = file.length(); 
    			socket = new Socket();  
    			socket.connect(new InetSocketAddress("127.0.0.1", 48123));
    			dos = new DataOutputStream(socket.getOutputStream());
    			fis = new FileInputStream(file);      
    			sendBytes = new byte[1024];  
    			while ((length = fis.read(sendBytes, 0, sendBytes.length)) > 0) {
    				sumL += length;  
    				System.out.println("已传输："+((sumL/l)*100)+"%");
    				dos.write(sendBytes, 0, length);
    				dos.flush();
    			} 
    			//虽然数据类型不同，但JAVA会自动转换成相同数据类型后在做比较
    			if(sumL==l){
    				bool = true;
    			}
    		}catch (Exception e) {
    			System.out.println("客户端文件传输异常");
    			bool = false;
    			e.printStackTrace();  
    		} finally{  
    			if (dos != null)
    				dos.close();
    			if (fis != null)
    				fis.close();   
    			if (socket != null)
    				socket.close();    
    		}
    		System.out.println(bool?"成功":"失败");
    	}
    }

服务端：

import java.io.DataInputStream;
    import java.io.File;
    import java.io.FileOutputStream;
    import java.io.IOException;
    import java.net.ServerSocket;
    import java.net.Socket;
    import java.util.Random;
    import com.boxun.util.GetDate;
    
    
    /**
     * 接收文件服务
     * @author admin_Hzw
     *
     */
    public class BxServerSocket {
    	
    	/**
    	 * 工程main方法
    	 * @param args
    	 */
    	public static void main(String[] args) {
    		try {
    			final ServerSocket server = new ServerSocket(48123);
    			Thread th = new Thread(new Runnable() {
    				public void run() {
    					while (true) {
    						try {  
    							System.out.println("开始监听...");
    							/*
    							 * 如果没有访问它会自动等待
    							 */
    							Socket socket = server.accept();
    							System.out.println("有链接");
    							receiveFile(socket);
    						} catch (Exception e) {
    							System.out.println("服务器异常");
    							e.printStackTrace();
    						}
    					}
    				}
    			});
    			th.run(); //启动线程运行
    		} catch (Exception e) {
    			e.printStackTrace();
    		}     
    	}
    
    	public void run() {
    	}
    
    	/**
    	 * 接收文件方法
    	 * @param socket
    	 * @throws IOException
    	 */
    	public static void receiveFile(Socket socket) throws IOException {
    		byte[] inputByte = null;
    		int length = 0;
    		DataInputStream dis = null;
    		FileOutputStream fos = null;
    		String filePath = "D:/temp/"+GetDate.getDate()+"SJ"+new Random().nextInt(10000)+".zip";
    		try {
    			try {
    				dis = new DataInputStream(socket.getInputStream());
    				File f = new File("D:/temp");
    				if(!f.exists()){
    					f.mkdir();  
    				}
    				/*  
    				 * 文件存储位置  
    				 */
    				fos = new FileOutputStream(new File(filePath));    
    				inputByte = new byte[1024];   
    				System.out.println("开始接收数据...");  
    				while ((length = dis.read(inputByte, 0, inputByte.length)) > 0) {
    					fos.write(inputByte, 0, length);
    					fos.flush();    
    				}
    				System.out.println("完成接收："+filePath);
    			} finally {
    				if (fos != null)
    					fos.close();
    				if (dis != null)
    					dis.close();
    				if (socket != null)
    					socket.close(); 
    			}
    		} catch (Exception e) {
    			e.printStackTrace();
    		}
    	}
    }

时间工具类：

import java.text.SimpleDateFormat;
    import java.util.Date;
    /**
     * 时间工具类
     * @author admin_Hzw
     *
     */
    public class GetDate {
    	/**
    	 * 时间格式到毫秒
    	 */
    	private static SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmssSSS");
    	public static String getDate(){
    		return df.format(new Date());
    	}  
    }