一般消除游戏都有体力回复的功能，很多消除游戏都是取的本地时间，这样的坏处就是用户修改了手机的时间就可以回复满体力。

实现代码如下 ：

思路就是使用百度的时间api获取到网页，然后在网页中抓取到时间戳 查看网页的源代码就可以发现源代码中有一个

window.baidu_time(1447841230045); 这一串数字就是时间戳 这里我们只要精确到秒级所以取前面10位就可以。

抓取时间戳就是通过“window.baidu_time(”关键字把网页源代码字符串切割成两半 然后取后面一半的前面10个字符，再把字符串转换为时间就可以了。

#ifndef __NETTIME__H
#define __NETTIME__H

#include "cocos2d.h";
#include "network/HttpClient.h"
using namespace cocos2d;
using namespace network;

class NetTime : public Node
{
public:
	NetTime();
	~NetTime();
	CREATE_FUNC(NetTime);
	
	CC_SYNTHESIZE(int,m_day,Day);
	CC_SYNTHESIZE(int,m_moth,Month);
	CC_SYNTHESIZE(int,m_year,Year);
	CC_SYNTHESIZE(int,m_hour,Hour);
	CC_SYNTHESIZE(int,m_second,Second);
	CC_SYNTHESIZE(int,m_minute,Minute);
	CC_SYNTHESIZE(time_t,m_time,Time);//时间chuo

	void requestNetTime();
	
private:
	void onHttpComplete(HttpClient * sender,HttpResponse * response);
	void spliteTime(std::string htmlStr);
	void initTime(time_t time);
};


#endif

#include "NetTime.h"
#include "Utils.h"

NetTime::NetTime() :m_second(0),m_day(0),m_hour(0),m_year(0),m_minute(0),m_moth(0)
{

}

NetTime::~NetTime()
{

}

void NetTime::requestNetTime()
{
	HttpRequest * request = new HttpRequest();
	request->setUrl("http://open.baidu.com/special/time/"); //百度获取时间的api
	
	request->setRequestType(HttpRequest::Type::GET);
	request->setTag("WebTime");
	request->setResponseCallback(this,httpresponse_selector(NetTime::onHttpComplete));
	HttpClient::getInstance()->send(request);
}

void NetTime::onHttpComplete(HttpClient * sender,HttpResponse * response)
{
	if (!response)
		return;

	if (0 != strlen(response->getHttpRequest()->getTag()))
	{
		CCLOG("%s completed",response->getHttpRequest()->getTag());
	}
	int statusCode = response->getResponseCode();
	char statusString[64] = {};
	sprintf(statusString,"HTTP Status: %d,tag = %s",statusCode,response->getHttpRequest()->getTag());
	CCLOG("%s",statusString);
	if (!response->isSucceed())
	{
		CCLOG("response Failed");
		CCLOG("error buffer:%s",response->getErrorBuffer());
		return;
	}
	std::vector<char> * buffer = response->getResponseData();
	std::string str;
	for (unsigned i = 0; i < buffer->size(); i++)
	{
		char a = (*buffer)[i];
		str.append(1,a);
	}
	
	spliteTime(str);
	//readJson(str);
}

void NetTime::spliteTime(std::string htmlStr)
{
	std::vector<std::string> tmp;
	splitString(tmp,htmlStr,"baidu_time(");

	std::string str = tmp.at(1);
	std::string tmpTime = str.substr(0,10) ;
	time_t tt = atoi(tmpTime.c_str());  
	initTime(tt);
}

void NetTime::initTime(time_t time)
{
	time_t t;
	struct tm *p;
	t = time;
	p = localtime(&t);
	/*char s[100];
	strftime(s,sizeof(s),"%Y-%m-%d %H:%M:%S",p);
	printf("%d: %s\n",(int)t,s);*/

	setSecond(p->tm_sec);
	setDay(p->tm_mday);
	setMonth(p->tm_mon + 1);
	setYear(p->tm_year + 1900 );
	setMinute(p->tm_min);
	setHour(p->tm_hour + 8);//北京时间等于世界时间加8小时
	setTime(t);
}

//切割字符串
static void splitString(std::vector<std::string> &contentVector,std::string content,std::string pattern)
{
	std::string::size_type pos;
	//std::vector<std::string> result;  
	content += pattern;//扩展字符串以方便操作  
	int size = content.size();

	for (int i = 0; i<size; i++)
	{
		pos = content.find(pattern,i);
		if (pos<size)
		{
			std::string s = content.substr(i,pos - i);
			// result.push_back(s);  
			contentVector.push_back(s);
			i = pos + pattern.size() - 1;
		}
	}
}