ChatServer/src/main/java/cn/com/zyjblogs/chat/netty/MyMessageEncoder.java

package cn.com.zyjblogs.chat.netty;


import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.MessageToByteEncoder;

public class MyMessageEncoder extends MessageToByteEncoder<MessageProtocol> {

    @Override
    protected void encode(ChannelHandlerContext ctx, MessageProtocol msg, ByteBuf out) throws Exception {
        System.out.println("\nMyMessageEncoder方法被调用 编码");
        out.writeInt(msg.getLen());
        out.writeBytes(msg.getContent());
    }
}