【独立开发者er Cocos2d-x实战 013】Cocos2dx 网络编程实战之星座运势

本篇文章主要内容：jsoncpp的使用，Cocos2dx网络编程，聚合数据星座运势接口使用。

1、jsoncpp使用：

jsoncpp的生成请参考博客：Jsoncpp使用详解以及链接问题解决

2、聚合数据星座运势接口使用：

我们先登上聚合数据官网，申请相关的数据后，就可以得到APPKEY等信息，调试如下：

3、Cocos2dx网络编程：源码下载请点击（源码中包括jsoncpp文件）

#include "HelloWorldScene.h"
#include "CocoStudio/GUI/UIWidgets/UIButton.h"
#include "GUI/CCControlExtension/CCControlButton.h"
#include "network/HttpResponse.h"
#include "network/HttpClient.h"
#include "cocos-ext.h"

#pragma  comment(lib, "json_vc71_libmt.lib")
#include "../jsoncpp/include/json.h"
#include<fstream>
#include <cassert>
using namespace std;

USING_NS_CC;
USING_NS_CC_EXT;

CCScene* HelloWorld::scene()
{
    // 'scene' is an autorelease object
    CCScene *scene = CCScene::create();

    // 'layer' is an autorelease object
    HelloWorld *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 ( !CCLayer::init() )
    {
        return false;
    }

    CCSize visibleSize = CCDirector::sharedDirector()->getVisibleSize();
    CCPoint origin = CCDirector::sharedDirector()->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
    CCMenuItemImage *pCloseItem = CCMenuItemImage::create(
                                        "CloseNormal.png",
                                        "CloseSelected.png",
                                        this,
                                        menu_selector(HelloWorld::Http));

	pCloseItem->setPosition(ccp(origin.x + visibleSize.width - pCloseItem->getContentSize().width/2 ,
                                origin.y + pCloseItem->getContentSize().height/2));

    // create menu, it's an autorelease object
    CCMenu* pMenu = CCMenu::create(pCloseItem, NULL);
    pMenu->setPosition(CCPointZero);
    this->addChild(pMenu, 1);

    /////////////////////////////
    // 3. add your codes below...

    // add a label shows "Hello World"
    // create and initialize a label

    CCLabelTTF* pLabel = CCLabelTTF::create("Hello World", "Arial", 24);

    // position the label on the center of the screen
    pLabel->setPosition(ccp(origin.x + visibleSize.width/2,
                            origin.y + visibleSize.height - pLabel->getContentSize().height));

    // add the label as a child to this layer
    this->addChild(pLabel, 1);

    // add "HelloWorld" splash screen"
    CCSprite* pSprite = CCSprite::create("HelloWorld.png");

    // position the sprite on the center of the screen
    pSprite->setPosition(ccp(visibleSize.width/2 + origin.x, visibleSize.height/2 + origin.y));

    // add the sprite as a child to this layer
    this->addChild(pSprite, 0);  

    return true;
}

void HelloWorld::menuCloseCallback(CCObject* pSender)
{
#if (CC_TARGET_PLATFORM == CC_PLATFORM_WINRT) || (CC_TARGET_PLATFORM == CC_PLATFORM_WP8)
	CCMessageBox("You pressed the close button. Windows Store Apps do not implement a close button.","Alert");
#else
    CCDirector::sharedDirector()->end();
#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
    exit(0);
#endif
#endif
}

#define URLFORMAT "http://web.juhe.cn:8080/constellation/getAll?consName=%s&type=today&key=%s" //格式化URL
<span style="font-size:18px;color:#ff0000;"><strong>#define APPKEY "" //APPKEY  填写你自己的APPKEY就可以使用</strong></span>
#define BAIYANGZUO "%E7%99%BD%E7%BE%8A%E5%BA%A7" //白羊座

void HelloWorld::Http(CCObject* pSender)
{

    cocos2d::extension::CCHttpRequest* request = new cocos2d::extension::CCHttpRequest(); 

    char szUrl[256] = {0};
    sprintf_s(szUrl, 255, URLFORMAT, BAIYANGZUO, APPKEY);
    request->setUrl(szUrl);
    request->setRequestType(cocos2d::extension::CCHttpRequest::kHttpGet);
    request->setResponseCallback(this, callfuncND_selector(HelloWorld::onHttpRequestCompleted));
    cocos2d::extension::CCHttpClient::getInstance()->send(request);
    request->release();  

    return;
}

void HelloWorld::onHttpRequestCompleted(cocos2d::CCNode *sender ,void *data)
{
    cocos2d::extension::CCHttpResponse *response = (cocos2d::extension::CCHttpResponse*)data;
    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 code:%d ,tag = %s" ,statusCode ,response->getHttpRequest()->getTag());
    CCLOG("response code:%d" ,statusCode);
    if (!response->isSucceed())
    {
        CCLOG("response failed");
        CCLOG("error buffer:%s" ,response->getErrorBuffer());
    }
    std::vector<char> *buffer = response->getResponseData();
    printf("Http response,dump data:");
    std::string result = "";
    for (unsigned int i = 0; i < buffer->size(); i ++)
    {
        result += (*buffer)[i];
    }  

    Json::Reader reader;
    Json::Value root;
    if ((!reader.parse(result, root, false)))
    {
        return;
    }

    std::string name = root["name"].asString();
    std::string asString = root["summary"].asString();
    CCLOG("name:%s, age:%d", name.c_str(), asString);

    CCPoint origin = CCDirector::sharedDirector()->getVisibleOrigin();
    CCSize visibleSize = CCDirector::sharedDirector()->getVisibleSize();

    CCLabelTTF* pLabel = CCLabelTTF::create(name.c_str(), "Arial", 24);

    // position the label on the center of the screen
    pLabel->setPosition(ccp(visibleSize.width/2,
        visibleSize.height/2));

    // add the label as a child to this layer
    this->addChild(pLabel, 1);
}

最后截图效果：

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