import net.minecraftforge.common.network.ForgeNetworkHandler; //导入依赖的package包/类
@Subscribe
public void modConstruction(FMLConstructionEvent evt)
{
    FMLLog.info("Registering Forge Packet Handler");
    try
    {
        FMLNetworkHandler.instance().registerNetworkMod(new ForgeNetworkHandler(this));
        FMLLog.info("Succeeded registering Forge Packet Handler");
    }
    catch (Exception e)
    {
        FMLLog.log(Level.SEVERE, e, "Failed to register packet handler for Forge");
    }
}
 

import net.minecraftforge.common.network.ForgeNetworkHandler; //导入依赖的package包/类
@Subscribe
public void modConstruction(FMLConstructionEvent evt)
{
    NetworkRegistry.INSTANCE.register(this, this.getClass(), "*", evt.getASMHarvestedData());
    ForgeNetworkHandler.registerChannel(this, evt.getSide());
}
 

import net.minecraftforge.common.network.ForgeNetworkHandler; //导入依赖的package包/类
public static void transferPlayerToDimension(EntityPlayerMP player, int dim, ServerConfigurationManager manager, Environment environ) {

		int oldDim = player.dimension;
		WorldServer worldserver = manager.getServerInstance().worldServerForDimension(player.dimension);
		player.dimension = dim;
		WorldServer worldserver1 = manager.getServerInstance().worldServerForDimension(player.dimension);
		// Cauldron dont crash the client, let 'em know there's a new dimension in town
        if (DimensionManager.isBukkitDimension(dim))
        {
            FMLEmbeddedChannel serverChannel = ForgeNetworkHandler.getServerChannel();
            serverChannel.attr(FMLOutboundHandler.FML_MESSAGETARGET).set(FMLOutboundHandler.OutboundTarget.PLAYER);
            serverChannel.attr(FMLOutboundHandler.FML_MESSAGETARGETARGS).set(player);
            serverChannel.writeOutbound(new ForgeMessage.DimensionRegisterMessage(dim, environ.getId()));
        }
        // Cauldron end
		player.playerNetServerHandler.sendPacket(new S07PacketRespawn(dim, worldserver1.difficultySetting, worldserver1.getWorldInfo()
				.getTerrainType(), player.theItemInWorldManager.getGameType()));
		player.playerNetServerHandler.sendPacket(new S1FPacketSetExperience(player.experience, player.experienceTotal, player.experienceLevel));

		worldserver.removePlayerEntityDangerously(player);
		if (player.riddenByEntity != null) {
			player.riddenByEntity.mountEntity(null);
		}
		if (player.ridingEntity != null) {
			player.mountEntity(null);
		}
		player.isDead = false;
		transferEntityToWorld(player, worldserver, worldserver1);
		manager.func_72375_a(player, worldserver);
		player.playerNetServerHandler.setPlayerLocation(player.posX, player.posY, player.posZ, player.rotationYaw, player.rotationPitch);
		player.theItemInWorldManager.setWorld(worldserver1);
		manager.updateTimeAndWeatherForPlayer(player, worldserver1);
		manager.syncPlayerInventory(player);
		Iterator<PotionEffect> iterator = player.getActivePotionEffects().iterator();

		while (iterator.hasNext()) {
			PotionEffect potioneffect = iterator.next();
			player.playerNetServerHandler.sendPacket(new S1DPacketEntityEffect(player.getEntityId(), potioneffect));
		}
		FMLCommonHandler.instance().firePlayerChangedDimensionEvent(player, oldDim, dim);
	}