java中使用Socket简单实现从服务器下载图片

逃离我推掉我的手 2022-05-08 15:22 59阅读 0赞

## 使用Socket简单实现从服务器下载图片 ##

**客户端**

public class Client {
    	public static void main(String[] args) {
    		Socket socket=null;
    		try {
    			socket=new Socket("192.168.199.215",9999);	//设置ip地址和端口号，建立连接
    			InputStream in=socket.getInputStream();	//通过socket获得输入流(从服务器端得到的数据)
    			OutputStream out=new FileOutputStream("e:xiazai.jpg");	//创建输出流，设置图片下载后的地址及名字
    			BufferedInputStream bufferin=new BufferedInputStream(in);	
    			BufferedOutputStream bufferout=new BufferedOutputStream(out);
    			int i=0;
    			byte[] by=new byte[1024*3];
    			while((i=bufferin.read(by))!=-1) {	//边下载边输出
    				bufferout.write(by, 0, i);
    			}
    			bufferout.flush();	//刷新流
    			bufferin.close();//关闭
    			bufferout.close();
    			socket.close();
    		} catch (UnknownHostException e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		} catch (IOException e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}
    	}
    }

**服务端**

public class Server {
    	public static void main(String[] args) {
    		ServerSocket serverSocket=null;
    		try {
    			serverSocket=new ServerSocket(9999);	//设置端口号(此端口号要与客户端端口号一致)
    			Socket socket=serverSocket.accept();	//接收连接请求
    			InputStream in=new FileInputStream("e:123.jpg");	//创建输入流，设置要读取的图片地址；
    			OutputStream out=socket.getOutputStream();	//通过ocket得到输出流，向客户端输出；
    			BufferedInputStream bufferin=new BufferedInputStream(in);
    			BufferedOutputStream bufferout=new BufferedOutputStream(out);
    			int i=0;
    			byte[] by=new byte[1024*3];
    			while((i=bufferin.read(by))!=-1) {	//边读边写
    				bufferout.write(by,0,i);
    			}
    			bufferout.flush();	//刷新
    			bufferin.close();	//关闭
    			bufferout.close();
    			socket.close();
    			serverSocket.close();
    		} catch (IOException e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}
    		
    	}
    }