JavaTCP上传图片代码实例

public class uploadpicclient {

  public static void main(string[] args) throws unknownhostexception, ioexception {

  // todo auto-generated method stub

  //1,创建客户端socket

  socket s = new socket( "localhost" , 10088 );

  //2,读取客户端要上传的图片文件

  fileinputstream fis = new fileinputstream( "d:\\workspace\\day2019.1.17\\lanjing.jpg" );

  //3,获取socket输出流，将读到的图片的数据发送到服务端

  outputstream out = s.getoutputstream();

  byte [] buf = new byte [ 1021 ];

  int len = 0 ;

  while ((len=fis.read(buf))!=- 1 ){

   out.write(buf, 0 ,len);

  }

  //告诉服务端说：这边的数据发送完毕让服务端停止读取

  s.shutdownoutput();

  //读取服务端发回的内容

  inputstream in = s.getinputstream();

  byte [] bufin = new byte [ 1024 ];

  int lenin = in.read(buf);

  string text = new string (buf, 0 ,lenin);

  system.out.println(text);

  //关闭资源

  fis.close();

  s.close();

  }

}

public class uploadpicsever {

public static void main(string[] args) throws ioexception {

  // todo auto-generated method stub

  //创建tcp的socket服务端

  serversocket ss = new serversocket( 10088 );

  //获取客户端

  socket s = ss.accept();

  string ip = s.getinetaddress().gethostaddress();

  system.out.println(ip+ ".....connected" );

  //读取客户端发来的数据

  inputstream in = s.getinputstream();

  //将读取到的数据存储到一个文件中。

  file dir = new file( "d:\\workspace\\day2019.1.17" );

  if (!dir.exists()){

  dir.mkdirs();

  }

  file file = new file(dir, "blue.jpg" );

  fileoutputstream fos = new fileoutputstream(file);

  byte [] buf = new byte [ 1024 ];

  int len = 0 ;

  while ((len=in.read(buf))!=- 1 ){

  fos.write(buf, 0 ,len);

  }

  //获取socket输出流，将上传成功字样发送给客户端

  outputstream out = s.getoutputstream();

  out.write( "上传成功" .getbytes());

  fos.close();

  s.close();

  ss.close();

}