java IO流传输图片

╰+哭是因爲堅強的太久メ 2023-10-11 13:37 39阅读 0赞

本次传输是基于TCP协议进行传输，其实传输图片的写法和传输文件的写法是差不多的  
客户端：

package com.day1;
    
    import java.io.BufferedInputStream;
    import java.io.BufferedOutputStream;
    import java.io.FileInputStream;
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.OutputStream;
    import java.net.Socket;
    
    public class ClientPicture {
    	public static void main(String[] args) throws Exception {
    		//1.连接诶服务器
    				Socket s = new Socket("127.0.0.1",9999);
    				System.out.println("已连接到服务器9999端口，准备传送图片...");
    				//获取图片字节流
    				FileInputStream fis = new FileInputStream("src\\img\\1_2.jpg");
    				//获取输出流
    				//OutputStream out = s.getOutputStream();
    				BufferedOutputStream bos=new BufferedOutputStream(s.getOutputStream());
    				byte[] buf = new byte[1024];
    				int len = 0;
    				//2.往输出流里面投放数据
    				while ((len = fis.read(buf)) != -1)
    				{
    					bos.write(buf,0,len);
    				}
    				//通知服务端，数据发送完毕
    				s.shutdownOutput();
    				//3.获取输出流，接受服务器传送过来的消息“上传成功”
    				//InputStream in = s.getInputStream();
    				BufferedInputStream bis=new BufferedInputStream(s.getInputStream());
    				byte[] bufIn = new byte[1024];
    				int num = bis.read(bufIn);
    				System.out.println(new String(bufIn,0,num));
    				//关闭资源
    				fis.close();
    				bos.close();
    				bis.close();
    				s.close();
    
    	}
    }

服务器端

package com.day1;
    
    import java.io.FileOutputStream;
    import java.io.InputStream;
    import java.io.OutputStream;
    import java.net.ServerSocket;
    import java.net.Socket;
    
    //使用TCp进行图片传输
     //服务器端
    public class ServerPicture {
    	public static void main(String[] args) throws Exception {
    		ServerSocket ss=new ServerSocket(9999);
    		System.out.println("服务器端以及启动正在接受数据");
    		Socket s=ss.accept();
    		System.out.println("检测到客户端");
    		InputStream in=s.getInputStream();
    		FileOutputStream fos=new FileOutputStream("src\\com\\day1\\2.jpg");
    		byte[] buf=new byte[1024];
    		int len=0;
    		while((len=in.read(buf))!=-1) {
    			fos.write(buf,0,len);
    		}
    		//收到图片，给客户端回送信息
    		OutputStream out=s.getOutputStream();
    		out.write("上传成功".getBytes());
    		//关闭资源
    		fos.close();
    		in.close();
    		out.close();
    		s.close();
    		ss.close();
    	}
    }