Netty的ByteBuf转换成字符串

一般字节数组转字符串

public String convertByteBufToString(ByteBuf buf) { String str; if(buf.hasArray()) { // 处理堆缓冲区 str = new String(buf.array(), buf.arrayOffset() + buf.readerIndex(), buf.readableBytes()); } else { // 处理直接缓冲区以及复合缓冲区 byte[] bytes = new byte[buf.readableBytes()]; buf.getBytes(buf.readerIndex(), bytes); str = new String(bytes, 0, buf.readableBytes()); } return str; }

 

转换成十六进制的字符串数据（发送的也必须是十六进制的字节数组）

public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception { ByteBuf buf=(ByteBuf)msg; try { String string=ByteBufUtil.hexDump(buf).toUpperCase(); //System.out.println(string); } finally { ReferenceCountUtil.release(msg); } }