.h中：

#ifndef __SANGUO_UTILS_H__
#define __SANGUO_UTILS_H__

#include "cocos2d.h"
USING_NS_CC;
/**
*  在节点树中按名字来寻找节点
*
*  @param root 根节点
*  @param name 节点名称
*
*  @return 找到返回对应节点，找不到返回null
*/
cocos2d::Node* seekChildByName(cocos2d::Node* root,const std::string& name);

template <class RET>
RET seekChildByNameWithRetType(cocos2d::Node* root,const std::string& name)
{
	auto ret = dynamic_cast<RET>(seekChildByName(root,name));

	CCASSERT(ret,"Can't get Object with the name or the type");

	return ret;
}
#endif 

.cpp中

#include "utils.h"

Node* seekChildByName(Node* root,const std::string& name)
{
	if (!root)
	{
		return nullptr;
	}
	if (root->getName() == name)
	{
		return root;
	}
	const auto& arrayRootChildren = root->getChildren();
	for (auto& subNode : arrayRootChildren)
	{
		auto child = dynamic_cast<Node*>(subNode);
		if (child)
		{
			auto res = seekChildByName(child,name);
			if (res != nullptr)
			{
				return res;
			}
		}
	}
	return nullptr;
}