Cocos2d-x tinyxml2用于xml的解析,自动生成xml文件和解析xml文件

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Cocos2d-x 已经加入了tinyxml2用于xml的解析。3.0版本位于external/tinyxml2下。2.x版本位于cocos2dx/support/tinyxml2下

生成xml文档

引入头文件

#include "tinyxml2/tinyxml2.h"using namespace tinyxml2;

xml文档生成

void  HelloWorld::makeXML(const char *fileName){std::string filePath = FileUtils::getInstance()->getWritablePath() + fileName;XMLDocument *pDoc = new XMLDocument();//xml 声明（参数可选）XMLDeclaration *pDel = pDoc->NewDeclaration("xml version=\"1.0\" encoding=\"UTF-8\"");pDoc->LinkEndChild(pDel);//添加plist节点XMLElement *plistElement = pDoc->NewElement("plist");plistElement->SetAttribute("version", "1.0");pDoc->LinkEndChild(plistElement);XMLComment *commentElement = pDoc->NewComment("this is xml comment");plistElement->LinkEndChild(commentElement);//添加dic节点XMLElement *dicElement = pDoc->NewElement("dic");plistElement->LinkEndChild(dicElement);//添加key节点XMLElement *keyElement = pDoc->NewElement("key");keyElement->LinkEndChild(pDoc->NewText("Text"));dicElement->LinkEndChild(keyElement);XMLElement *arrayElement = pDoc->NewElement("array");dicElement->LinkEndChild(arrayElement);for (int i = 0; i<3; i++) {    XMLElement *elm = pDoc->NewElement("name");    elm->LinkEndChild(pDoc->NewText("Cocos2d-x"));    arrayElement->LinkEndChild(elm);}pDoc->SaveFile(filePath.c_str());pDoc->Print();delete pDoc;}

打印结果

<?xml version="1.0" encoding="UTF-8"?><plist version="1.0"><!--this is xml comment--><dic>    <key>Text</key>    <array>        <name>Cocos2d-x</name>        <name>Cocos2d-x</name>        <name>Cocos2d-x</name>    </array></dic></plist>

上面代码使用tinyxml简单生成了一个xml文档。

解析xml

下面我们就来解析上面创建的xml文档

引入头文件

#include "tinyxml2/tinyxml2.h"using namespace tinyxml2;

xml解析

void HelloWorld::parseXML(const char *fileName){std::string filePath = FileUtils::getInstance()->getWritablePath() + fileName;XMLDocument *pDoc = new XMLDocument();XMLError errorId = pDoc->LoadFile(filePath.c_str());if (errorId != 0) {    //xml格式错误    return;}XMLElement *rootEle = pDoc->RootElement();//获取第一个节点属性const XMLAttribute *attribute = rootEle->FirstAttribute();//打印节点属性名和值log("attribute<em>name = %s,attribute</em>value = %s", attribute->Name(), attribute->Value());</p>XMLElement *dicEle = rootEle->FirstChildElement("dic");XMLElement *keyEle = dicEle->FirstChildElement("key");if (keyEle) {    log("keyEle Text= %s", keyEle->GetText());}XMLElement *arrayEle = keyEle->NextSiblingElement();XMLElement *childEle = arrayEle->FirstChildElement();while ( childEle ) {    log("childEle Text= %s", childEle->GetText());    childEle = childEle->NextSiblingElement();}delete pDoc;}

在节点解析过程中，注意对获取到的节点进行判空处理。

解析结果打印

cocos2d: attribute_name = version,attribute_value = 1.0cocos2d: keyEle Text= Textcocos2d: childEle Text= Cocos2d-xcocos2d: childEle Text= Cocos2d-xcocos2d: childEle Text= Cocos2d-x

小结

上面的简单示例，演示了如何使用tinyxml进行xml文档生成和解析。更多详细的帮助请参考 tinyxml帮助文档http://grinninglizard.com/tinyxml2docs/index.html

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