cocos2d-x使用libjson和tinyxml解析json和xml的代码示例

2015 年 02 月 20 日

4827 次浏览

6442字数

头文件helloword.h

#ifndef __HELLOWORLD_SCENE_H__
#define __HELLOWORLD_SCENE_H__
#include "cocos2d.h"
#include "cocos-ext.h"
#include "libjson.h"
#include "tinyxml.h"
USING_NS_CC_EXT;
USING_NS_CC;
class HelloWorld : public cocos2d::CCLayer
{
public:
    virtual bool init();
    static cocos2d::CCScene* scene();
    void menuCloseCallback(CCObject* pSender);
    CREATE_FUNC(HelloWorld);
    void json();
    void jsonparse(JSONNode &n);
    void xml();
};

#endif // __HELLOWORLD_SCENE_H__

helloword.cpp的内容,使用两者的方法

#include "HelloWorldScene.h"
#include "variate.h"
#include "cocos-ext.h"
#include <fstream>
using namespace std;
USING_NS_CC_EXT;
USING_NS_CC;
CCScene* HelloWorld::scene()
{
    CCScene *scene = CCScene::create();
    HelloWorld *layer = HelloWorld::create();
    scene->addChild(layer);
    return scene;
}
bool HelloWorld::init()
{
    if ( !CCLayer::init() )
    {
        return false;
    }
    CCMenuItemFont *font=CCMenuItemFont::create("json");
    font->setFontSize(30);
    font->setAnchorPoint(ccp(0, 0));
    font->setPosition(ccp(40, 8));
    CCMenuItemFont *font2=CCMenuItemFont::create("xml");
    font2->setAnchorPoint(ccp(0, 0));
    font2->setPosition(ccp(40, 8));
    CCMenuItemImage *image1=CCMenuItemImage::create("btn-test-0.png", "btn-test-0.png", this, menu_selector(HelloWorld::json));
    image1->addChild(font);
     CCMenuItemImage *image2=CCMenuItemImage::create("btn-test-0.png", "btn-test-0.png", this, menu_selector(HelloWorld::xml));
    image2->addChild(font2);
    CCMenu *menu=CCMenu::create(image1,image2,NULL);
    menu->alignItemsVertically();//menu->alignItemsHorizontally();
    menu->setPosition(Visibel_mid.x, Visibel_mid.y-100);
    addChild(menu);
    return true;
}
void HelloWorld::json()
{
    JSONNode n(JSON_NODE);
    n.push_back(JSONNode("child", "this is a child json"));
    JSONNode n1(JSON_NODE);
    JSONNode n2(JSON_NODE);
    n1.push_back(JSONNode("child a", "this is child a"));
    n1.push_back(JSONNode("child b", "this is child b"));
    n2.push_back(JSONNode("child c", "this is child c"));
    n2.push_back(JSONNode("child d", "this is child d"));
    n2.push_back(JSONNode("child e", "this is child e"));
    JSONNode array(JSON_ARRAY);
    array.set_name("name");
    array.push_back(n1);
    array.push_back(n2);
    n.push_back(array);
    cout<<n.write_formatted();
        //数据化的持久化存储
    string datapath=CCFileUtils::sharedFileUtils()->getWritablePath()+"info.text";
    fstream files;
    files.open(datapath.c_str(),ios::out);
    files<<n.write_formatted();
    files.close();
    CCLOG("%s",datapath.c_str());
        //读取文章内容
    CCString *contentstr=CCString::createWithContentsOfFile(datapath.c_str());
    JSONNode jsonnode=libjson::parse(contentstr->getCString());
    this->jsonparse(jsonnode);
}
void HelloWorld::jsonparse(JSONNode &n)
{
    JSONNode::json_iterator itror=n.begin();
    while (itror!=n.end()) {
        if (itror->type()!=JSON_NODE||itror->type()!=JSON_ARRAY) {
            jsonparse(*itror);
        }
        if (itror->name()=="child") {
            CCLOG("%s",itror->as_string().c_str());
        }
        if (itror->name()=="child a") {
            CCLOG("%s",itror->as_string().c_str());
        }
        if (itror->name()=="child b") {
            CCLOG("%s",itror->as_string().c_str());
        }
        if (itror->name()=="child c") {
            CCLOG("%s",itror->as_string().c_str());
        }
        if (itror->name()=="child d") {
            CCLOG("%s",itror->as_string().c_str());
        }
        if (itror->name()=="child e") {
            CCLOG("%s",itror->as_string().c_str());
        }
        itror++;
    }
}
void HelloWorld::xml()
{
        //源文件
    string bundle = CCFileUtils::sharedFileUtils()->fullPathForFilename("news.xml");
        //获取文件内容
    CCString *stringpp=CCString::createWithContentsOfFile(bundle.c_str());
    //获取沙盒地址
    string xmlpath=CCFileUtils::sharedFileUtils()->getWritablePath()+"new.xml";
    CCLog("%s",xmlpath.c_str());
    fstream file;
    file.open(xmlpath.c_str(),ios::out);
    file<<stringpp->getCString();
    file.close();
    TiXmlDocument *document=new TiXmlDocument(xmlpath.c_str());
    document->LoadFile();//加载文件
    TiXmlElement *rootelement=document->RootElement();
    cout<<rootelement->Value()<<endl;
        //一级一级获取
    TiXmlElement *channel=rootelement->FirstChildElement();
    TiXmlElement *title=channel->FirstChildElement();
    cout<<title->Value()<<endl;
        //获取兄弟节点
    TiXmlElement *link=title->NextSiblingElement("link");
//    TiXmlElement *link=title->NextSiblingElement()->NextSiblingElement()
//    ->NextSiblingElement();
    cout<<link->GetText()<<endl;
    //增加
    TiXmlElement *newelement=new TiXmlElement("channel");
    newelement->SetAttribute("name", "123");
    TiXmlText text("uuuuuuuuuuuuuuu");
    newelement->LinkEndChild(&text);
    //rootelement->InsertEndChild(*newelement);//加到末尾
    rootelement->InsertBeforeChild(rootelement->FirstChildElement(), *newelement);
    document->SaveFile();
    //替换
    TiXmlElement *newelement1=new TiXmlElement("csdf");
    newelement1->SetAttribute("ndf", "sdf3");
    TiXmlText text1("dsfsuuuu");
    newelement1->LinkEndChild(&text1);
    rootelement->ReplaceChild(rootelement->FirstChildElement(), *newelement1);
    document->SaveFile();
    //删除
//    rootelement->RemoveChild(rootelement->FirstChildElement()->NextSiblingElement());
//    document->SaveFile();
    TiXmlElement *two=new TiXmlElement("title");
    //TiXmlText text2("yyyy");
    two->LinkEndChild(newelement);
    rootelement->InsertEndChild(*two);
    document->SaveFile();
}
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
}