java - 将这个 FileOutputStream Groovy 方法转换为纯 Java？

Question

我一直在想如何将这个Groovy方法转换成纯Java方法。有人想尝试一下吗？

public void wget(String urlstring, File destfile) {
    new FileOutputStream(destfile).withStream{ out ->
        new URL(urlstring).openStream().eachByte{
            out.write(it)
        }
    }
}

----------------------------------------

感谢 tim_yates，答案是:

public void wget(String urlstring, File destfile) throws IOException {
    InputStream bis = new URL( urlstring ).openStream() ;
    BufferedOutputStream fos = 
            new BufferedOutputStream( new FileOutputStream( destfile ) ) ;
    try {
        byte[] buffer = new byte[ 2048 ] ;
        @SuppressWarnings("unused")
        int cnt=0;
        while( ( cnt = bis.read( buffer, 0, 2048 ) ) > -1 ) {
            fos.write( buffer, 0, 2048 ) ;
        }
    }
    finally {
        bis.close() ;
        fos.close() ;
    }
}

Answer 1

怎么样

public void wget( String urlstring, File destFile ) throws IOException {
  BufferedInputStream bis = new URL( urlstring ).openStream() ;
  BufferedOutputStream fos = new BufferedOutputStream( new FileOutputStream( destFile ) ) ;
  try {
    byte[] buffer = new byte[ 8192 ] ;
    int cnt = 0 ;
    while( ( cnt = bis.read( buffer, 0, 8192 ) ) > -1 ) {
      fos.write( buffer, 0, 8192 ) ;
    }
  }
  finally {
    bis.close() ;
    fos.close() ;
  }
}

我相信应该有效...但我还没有尝试过:-/