Class StringEncoder

All Implemented Interfaces:
ChannelHandler, ChannelOutboundHandler

@Sharable public class StringEncoder extends MessageToMessageEncoder<CharSequence>
Encodes the requested String into a ByteBuf. A typical setup for a text-based line protocol in a TCP/IP socket would be:
 ChannelPipeline pipeline = ...;

 // Decoders
 pipeline.addLast("frameDecoder", new LineBasedFrameDecoder(80));
 pipeline.addLast("stringDecoder", new StringDecoder(CharsetUtil.UTF_8));

 // Encoder
 pipeline.addLast("stringEncoder", new StringEncoder(CharsetUtil.UTF_8));
 
and then you can use a String instead of a ByteBuf as a message:
 void channelRead(ChannelHandlerContext ctx, String msg) {
     ch.write("Did you say '" + msg + "'?\n");
 }
 
  • Field Details

    • charset

      private final Charset charset
  • Constructor Details

    • StringEncoder

      public StringEncoder()
      Creates a new instance with the current system character set.
    • StringEncoder

      public StringEncoder(Charset charset)
      Creates a new instance with the specified character set.
  • Method Details