如何将 a.netty ByteBuf 转换为 String，反之亦然

Question

Is there a way to convert a.netty ByteBuf to a String and vice versa?

public String toString(ByteBuf b){

 //return b enconded to a String
}

public Bytebuf ToByteBuff(String s){

  //return s decoded to Bytebuf
}

Answer 1

You can use ByteBuf.toString(Charset) to convert to string.

You can use String.getBytes(Charset) and Unpooled.wrappedBuffer(byte[]) to convert to ByteBuf.

Answer 2

您可以使用Unpooled.copiedBuffer(String, Charset)从字符串创建ByteBuf 。

Answer 3

To convert ByteBuf to String, it needs:

 public void channelRead(ChannelHandlerContext ctx, Object msg) {
        ByteBuf in = (ByteBuf) msg;
        String clientMessage = in.toString(CharsetUtil.UTF_8);

To convert String to ByteBuf, it needs:

 String message = "text";
 ByteBuf in = Unpooled.wrappedBuffer(message.getBytes());