Tcp协议传输文件时,传输完成一定要记得关闭输出流 new Socket().shutdownOutput();
以便将文件结尾标志传至服务器端,让程序正常终止。- import java.io.File;
- import java.io.FileInputStream;
- import java.io.FileOutputStream;
- import java.io.IOException;
- import java.io.InputStream;
- import java.io.OutputStream;
- import java.net.ServerSocket;
- import java.net.Socket;
- public class TcpDemo4 {
- /**
- * TCP协议服务端多线程技术
- * @throws Exception
- */
- public static void main(String[] args) throws Exception {
- ServerSocket ss = new ServerSocket(10888);
- while(true){
- Socket s = new Socket();
- s = ss.accept();
- new Thread(new Upload(s)).start();
- }
- }
- }
- class Client{
- public static void main(String[] args) throws Exception, IOException {
- Socket s = new Socket("192.168.220.1",10888);
- File src = new File("F:\\深色壁纸\\1 (2).jpg");
- FileInputStream fin = new FileInputStream(src);
- byte[] buf = new byte[1024];
- int len = 0;
- OutputStream os = s.getOutputStream();
- System.out.println("客户端开始传输...");
- while ((len = fin.read(buf)) != -1) {
- os.write(buf, 0, len);
- }
- s.shutdownOutput();
- InputStream in = s.getInputStream();
- len = in.read(buf);
- System.out.println(new String(buf, 0, len));
- fin.close();
- s.close();
- }
- }
- class Upload implements Runnable{
- private Socket s;
- private int count = 0;
- public Upload(Socket s) {
- super();
- this.s = s;
- }
- @Override
- public void run() {
- System.out.println("服务器启动");
- String ip = s.getInetAddress().getHostAddress();
- File dir = new File("f:\\tcp多线程");
- dir.mkdirs();
- File des = new File(dir,ip+".jpg");
- while (des.exists())
- des = new File(dir, ip + "(" + ++count + ")" + ".jpg");
- FileOutputStream fos = null;
- try {
- fos = new FileOutputStream(des);
- InputStream in = s.getInputStream();
- byte[] buf = new byte[1024];
- int len = 0;
- System.out.println("开始上传...");
- while ((len = in.read(buf)) != -1) {
- fos.write(buf, 0, len);
- }
- System.out.println("done");
- OutputStream os = s.getOutputStream();
- os.write("上传成功".getBytes());
- } catch (Exception e) {
- // TODO Auto-generated catch block
- e.printStackTrace();
- }finally{
- if(null!=fos)
- try {
- fos.close();
- } catch (IOException e) {
- e.printStackTrace();
- }
- try {
- s.close();
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- }
- }
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