[十一]java作业

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多线程文件传送

//serverimport java.io.*;import java.net.*;public class servertest extends ServerSocket{class ServerThread extends Thread {private Socket client ;private File files = null;private FileInputStream inputtmp = null ;    private DataOutputStream netout = null ;public ServerThread(Socket tmp)throws IOException {client = tmp ;files = new File("server.jpg");inputtmp = new FileInputStream(files);netout = new DataOutputStream(client.getOutputStream());System.out.println("Client("+client.getInetAddress().getHostAddress()+") connect");start();}public void run(){try {netout.writeUTF(files.getName());netout.writeLong(files.length());byte[] sendBytes = new byte[1024];int length = 0 ;while((length = inputtmp.read(sendBytes, 0, sendBytes.length))>0){netout.write(sendBytes, 0, length);netout.flush();}client.close();netout.close();inputtmp.close();}catch(IOException e){e.printStackTrace();}}}public servertest() throws IOException{super(8580);System.out.println("server start:");for(;;){Socket socket = accept();new ServerThread(socket);}}    @SuppressWarnings("resource")public static void main(String[]args){    try {new servertest();} catch (IOException e) {e.printStackTrace();}    }}

//clientimport java.io.*;import java.net.*;public class clienttest {public static void main(String[]args){Socket client=null ;FileOutputStream filesoutput=null ;DataInputStream netin=null ;try {client=new Socket("127.0.0.1",8580);netin=new DataInputStream(client.getInputStream());String filesname=netin.readUTF();long length=netin.readLong();filesoutput=new FileOutputStream(new File("rec.jpg"));byte[]sendBytes=new byte[1024];System.out.println("rec files<"+filesname+"> <"+length+">");for(;;){int read=0 ;read=netin.read(sendBytes);if(read==-1)break ;filesoutput.write(sendBytes,0,read);}filesoutput.close();netin.close();client.close();System.out.println("<"+filesname+"> end");}catch(Exception e){e.printStackTrace();}}}

参考资料

https://my.oschina.net/leejun2005/blog/104955

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