【官方文档】Cocos2d-x xml解析

转载自 zeroyang2014-07-31

CCLOG("%s",filePath.c_str());

// /Users/niezhao/Library/Developer/CoreSimulator/Devices/DD86FD72-6CE2-4459-8A4D-70D7C027F10D/data/Containers/Data/Application/8EC0197B-2A8B-407A-9D97-8ABC662A29B0/Documents/2bbb.xml

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。

tinyxml2 Github地址：https://github.com/leethomason/tinyxml2

帮助文档地址：http://grinninglizard.com/tinyxml2docs/index.html

生成xml文档

1. 引入头文件

   1 2	#include "tinyxml2/tinyxml2.h" using namespace tinyxml2;

2. xml文档生成

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   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; }

3. 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

1. 引入头文件

   namespacetinyxml2;

2. xml解析

   35

   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_name = %s,attribute_value = %s" ,attribute->Name(),attribute->Value()); 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。

3. 解析结果打印

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