netty - 如何将ChannelBuffer类型保存到文件中？

Question

我试过使用这段代码:

saver=new FileOutputStream(file);
byte c;
while ( content.readable() ){ //content is a ChannelBuffer type
    c = content.readByte();
    saver.write(c); 
   }   

但由于文件流是二进制的,写入速度似乎很慢!有没有办法将ChannelBuffer快速保存到文件中？

Answer 1

尝试将整个缓冲区写入文件.此示例代码来自netty文件上传应用程序.

    FileOutputStream outputStream = new FileOutputStream(file);
    FileChannel localfileChannel = outputStream.getChannel();
    ByteBuffer byteBuffer = buffer.toByteBuffer();
    int written = 0;
    while (written < size) {
        written += localfileChannel.write(byteBuffer);
    }
    buffer.readerIndex(buffer.readerIndex() + written);
    localfileChannel.force(false);
    localfileChannel.close();