Netty: 解码器要与ChannelHandler配合使用

解决粘包问题时，
public class ChildChannelHandler extends ChannelInitializer{

@Override
protected void initChannel(SocketChannel ch) throws Exception {
  ch.pipeline().addLast(new LineBasedFrameDecoder(1024));
  ch.pipeline().addLast(new StringDecoder());
  //ch.pipeline().addLast(new MyHandler01());
  ch.pipeline().addLast(new MyHandler02());
  
  
}

}
添加了2个解码器，Handler里就要相应调整

public class MyHandler02 extends ChannelInboundHandlerAdapter{

@Override
public void channelRead(ChannelHandlerContext ctx,Object msg) throws UnsupportedEncodingException
{
    
    String ttt=(String)msg;
    System.out.println(new Date()+" read2 ..."+ttt);
    
    
    
    
    /*
    ByteBuf msg0=(ByteBuf)msg;
    byte[] bytes=new byte[msg0.readableBytes()];
    msg0.readBytes(bytes);
    String str=new String(bytes,"UTF-8");
    System.out.println(new Date()+" read2 ..."+str);    
    */
    
}

 @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        System.out.println("connection came2...");
        
        ByteBuf bb=Unpooled.copiedBuffer("this is time from netty2..."+new Date(),CharsetUtil.UTF_8);
        ctx.writeAndFlush(bb);
    }

 @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause)
            throws Exception {
       System.out.println("error occured...");
       System.out.println(cause.getMessage());
       ctx.close();
    }

}