UE4读取本地XML文件

最新推荐文章于 2023-12-30 17:58:01 发布

转载最新推荐文章于 2023-12-30 17:58:01 发布 · 1.6k 阅读

UE4 专栏收录该内容

100 篇文章

订阅专栏

本文介绍如何在UE4中集成TinyXML库进行XML文件的读写操作，包括添加TinyXML到UE4项目的步骤及使用TinyXML API进行XML解析与生成的具体实现。

其实这里读取XML也是利用了Tinyxml来读取xml，主要是讲Tinyxml放在UE4中，遇到的一点点坑

1.先给出Tinyxml链接:http://www.grinninglizard.com/tinyxml/，可以下载他的工程

2.用UE4新建一个C++工程，将下图的几个文件添加到UE4.的工程中

3.并在tinyxml的cpp文件中添加本工程的头文件，比如这里是

[cpp]view plaincopy 
   
 #include "MatineeProject.h"  

4.在UE4中的任意C++文件中，tinyxml的头文件

[cpp]view plaincopy 
   
 #include "tinyxml.h"  
 #include "tinystr.h"  

5.尝试利用tinyxml的接口读取本地xml，主要注意一些变量类型的转换，UE4是自己的一套变量类型，并不适用tinyxml

[cpp]view plaincopy 
   
 #include <string>
 #include <iostream>
 #include <tinyxml.h>
 
 
 void printSchoolXml();
 void readSchoolXml();
 void writeSchoolXml();
 int main(int argc, char** argv) {
 printSchoolXml();
 readSchoolXml();
 writeSchoolXml();
 return 0;
 }
 
 
 void printSchoolXml() {
 using namespace std;
 TiXmlDocument doc;  
 const char * xmlFile = "conf/school.xml"; 
 if (doc.LoadFile(xmlFile)) {   
 doc.Print();  
 } else {
 cout << "can not parse xml conf/school.xml" << endl;
 }
 }
 
 
 void readSchoolXml() {
 using namespace std;
 const char * xmlFile = "conf/school.xml"; 
 TiXmlDocument doc;  
 if (doc.LoadFile(xmlFile)) {   
 doc.Print();  
 } else {
 cout << "can not parse xml conf/school.xml" << endl;
 return;
 }
 TiXmlElement* rootElement = doc.RootElement();  //School元素  
 TiXmlElement* classElement = rootElement->FirstChildElement();  // Class元素
 TiXmlElement* studentElement = classElement->FirstChildElement();  //Students  
 for (; studentElement != NULL; studentElement = studentElement->NextSiblingElement() ) {  
 TiXmlAttribute* attributeOfStudent = studentElement->FirstAttribute();  //获得student的name属性  
 for (;attributeOfStudent != NULL; attributeOfStudent = attributeOfStudent->Next() ) {  
 cout << attributeOfStudent->Name() << " : " << attributeOfStudent->Value() << std::endl;  
 }
 
 
 TiXmlElement* studentContactElement = studentElement->FirstChildElement();//获得student的第一个联系方式 
 for (; studentContactElement != NULL; studentContactElement = studentContactElement->NextSiblingElement() ) {
 string contactType = studentContactElement->Value();
 string contactValue = studentContactElement->GetText();
 cout << contactType  << " : " << contactValue << std::endl;  
 }
 
 
 }  
 }
 
 
 
 
 void writeSchoolXml() {
 using namespace std;
 const char * xmlFile = "conf/school-write.xml"; 
 TiXmlDocument doc;  
 TiXmlDeclaration * decl = new TiXmlDeclaration("1.0", "", "");  
 TiXmlElement * schoolElement = new TiXmlElement( "School" );  
 TiXmlElement * classElement = new TiXmlElement( "Class" );  
 classElement->SetAttribute("name", "C++");
 
 
 TiXmlElement * stu1Element = new TiXmlElement("Student");
 stu1Element->SetAttribute("name", "tinyxml");
 stu1Element->SetAttribute("number", "123");
 TiXmlElement * stu1EmailElement = new TiXmlElement("email");
 stu1EmailElement->LinkEndChild(new TiXmlText("tinyxml@163.com") );
 TiXmlElement * stu1AddressElement = new TiXmlElement("address");
 stu1AddressElement->LinkEndChild(new TiXmlText("中国"));
 stu1Element->LinkEndChild(stu1EmailElement);
 stu1Element->LinkEndChild(stu1AddressElement);
 
 
 TiXmlElement * stu2Element = new TiXmlElement("Student");
 stu2Element->SetAttribute("name", "jsoncpp");
 stu2Element->SetAttribute("number", "456");
 TiXmlElement * stu2EmailElement = new TiXmlElement("email");
 stu2EmailElement->LinkEndChild(new TiXmlText("jsoncpp@163.com"));
 TiXmlElement * stu2AddressElement = new TiXmlElement("address");
 stu2AddressElement->LinkEndChild(new TiXmlText("美国"));
 stu2Element->LinkEndChild(stu2EmailElement);
 stu2Element->LinkEndChild(stu2AddressElement);
 
 
 classElement->LinkEndChild(stu1Element);  
 classElement->LinkEndChild(stu2Element);  
 schoolElement->LinkEndChild(classElement);  
 
 doc.LinkEndChild(decl);  
 doc.LinkEndChild(schoolElement); 
 doc.SaveFile(xmlFile);  
 }
 