HTTP请求实现,把下面代码复制到新创建的工程中就能看到效果.

HelloWorldScene.h

#include "cocos2d.h"
/*记得要引头文件*/
#include "extensions/cocos-ext.h"
#include "network/HttpClient.h"
USING_NS_CC;
USING_NS_CC_EXT;
using namespace network;

class HelloWorld : public cocos2d::Layer
{
public:
    // there's no 'id' in cpp,so we recommend returning the class instance pointer
    static cocos2d::Scene* createScene();
    
    // Here's a difference. Method 'init' in cocos2d-x returns bool,instead of returning 'id' in cocos2d-iphone
    virtual bool init();
    
    // a selector callback
    void menuCloseCallback(cocos2d::Ref* pSender);
    
    void onMenuGetTestClicked(Ref* sender);
    
    void onMenuPostBinaryTestClicked(Ref* sender);
    
    
    //Http Response Callback
    void onHttpRequestCompleted(cocos2d::network::HttpClient *sender,cocos2d::network::HttpResponse *response);
    // implement the "static create()" method manually
    CREATE_FUNC(HelloWorld);
};

HelloWorldScene.cpp

#include "HelloWorldScene.h"

USING_NS_CC;

Scene* HelloWorld::createScene()
{
    // 'scene' is an autorelease object
    auto scene = Scene::create();
    
    // 'layer' is an autorelease object
    auto layer = HelloWorld::create();

    // add layer as a child to scene
    scene->addChild(layer);

    // return the scene
    return scene;
}

// on "init" you need to initialize your instance
bool HelloWorld::init()
{
    //////////////////////////////
    // 1. super init first
    if ( !Layer::init() )
    {
        return false;
    }
    
    Size visibleSize = Director::getInstance()->getVisibleSize();
    Vec2 origin = Director::getInstance()->getVisibleOrigin();

    /////////////////////////////
    // 2. add a menu item with "X" image,which is clicked to quit the program
    //    you may modify it.

    // add a "close" icon to exit the progress. it's an autorelease object
    auto closeItem = MenuItemImage::create(
                                           "CloseNormal.png","CloseSelected.png",CC_CALLBACK_1(HelloWorld::menuCloseCallback,this));
    
	closeItem->setPosition(Vec2(origin.x + visibleSize.width - closeItem->getContentSize().width/2,origin.y + closeItem->getContentSize().height/2));

    // create menu,it's an autorelease object
    auto menu = Menu::create(closeItem,NULL);
    menu->setPosition(Vec2::ZERO);
    this->addChild(menu,1);

    /////////////////////////////
    auto winSize = Director::getInstance()->getWinSize();
    
    const int MARGIN = 40;
    const int SPACE = 70;
    
    auto label = Label::create("Http Request Test","fonts/arial.ttf",28);
    label->setPosition(Vec2(winSize.width / 2,winSize.height - MARGIN));
    addChild(label);
    
    auto menuRequest = Menu::create();
    menuRequest->setPosition(Point::ZERO);
    addChild(menuRequest);
    
    //Get
    auto labelGet = Label::createWithTTF("Test Get",44);
    auto itemGet = MenuItemLabel::create(labelGet,CC_CALLBACK_1(HelloWorld::onMenuGetTestClicked,this));
    itemGet->setPosition(Point(winSize.width / 2,winSize.height - MARGIN - SPACE));
    menuRequest->addChild(itemGet);
    
    auto labelPostBinary = Label::createWithTTF("Test Post Binary","arial.ttf",44);
    auto itemPostBinary = MenuItemLabel::create(labelPostBinary,CC_CALLBACK_1(HelloWorld::onMenuPostBinaryTestClicked,this));
    itemPostBinary->setPosition(Point(winSize.width / 2,winSize.height - MARGIN - 3 * SPACE));
    menuRequest->addChild(itemPostBinary);
    
    return true;
}


void HelloWorld::menuCloseCallback(Ref* pSender)
{
#if (CC_TARGET_PLATFORM == CC_PLATFORM_WP8) || (CC_TARGET_PLATFORM == CC_PLATFORM_WINRT)
	MessageBox("You pressed the close button. Windows Store Apps do not implement a close button.","Alert");
    return;
#endif

    Director::getInstance()->end();

#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
    exit(0);
#endif
}
void HelloWorld::onMenuGetTestClicked(Ref* sender)
{
    HttpRequest* request = new  HttpRequest();
    request->setUrl("GET请求网址");
    request->setRequestType(HttpRequest::Type::GET);
    request->setResponseCallback(this,httpresponse_selector(HelloWorld::onHttpRequestCompleted));
    request->setTag("GET test1");
    HttpClient::getInstance()->send(request);
    request->release();
}


void HelloWorld::onMenuPostBinaryTestClicked(cocos2d::Ref *sender)
{
    HttpRequest* request = new HttpRequest();
    request->setUrl("https://www.baidu.com/");
    request->setRequestType(HttpRequest::Type::POST);
    request->setResponseCallback(this,httpresponse_selector(HelloWorld::onHttpRequestCompleted));
    
    const  char* postData = "参数 params = Value";
    request->setRequestData(postData,strlen(postData) );
    
    request->setTag("POST test1");
    HttpClient::getInstance()->send(request);
    request->release();
}

void HelloWorld::onHttpRequestCompleted(cocos2d::network::HttpClient *sender,cocos2d::network::HttpResponse *response)
{
    if (!response) {
        return;
        
    }
    
    if (0 != strlen(response->getHttpRequest()->getTag())) {
        log("%s completed",response->getHttpRequest()->getTag());
    }
    
    long statusCode = response->getResponseCode();
    char statusString[64] = {};
    
    sprintf(statusString,"HTTP Status Code: %ld,tag = %s",statusCode,response->getHttpRequest()->getTag());
    log("response code: %ld",statusCode);
    
    if (!response->isSucceed()) {
        log("response Failed");
        log("error buffer: %s",response->getErrorBuffer());
        return;
        
    }
    
    std::vector<char>* buffer = response->getResponseData();
    printf("Http Test,dump data: ");
    for (unsigned int i = 0 ; i < buffer->size();i++) {
        printf("%c",(*buffer)[i]);
    }
    printf("\n");
}