rapidxml

C++中rapidxml⽤法

解析xml是第三⽅库很多，例如：tingxml，这次学习⼀下rapidxml，rapidxml是⼀个快速的xml库，⽐tinyxml快了50-100倍。

这个库源码⼀共只有四个⽂件分别是:

测试demo：

#include

#include""

#include"rapidxml_"

#include"rapidxml_"

usingnamespacerapidxml;

intCreateXml()

{

rapidxml::xml_document<>doc;

rapidxml::xml_node<>*rot=te_node(rapidxml::node_pi,te_string("xmlversion='1.0'encoding='utf-8'"));

_node(rot);

rapidxml::xml_node<>*node=te_node(rapidxml::node_element,"config","information");

_node(node);

rapidxml::xml_node<>*color=te_node(rapidxml::node_element,"color",NULL);

node->append_node(color);

color->append_node(te_node(rapidxml::node_element,"red","0.1"));

color->append_node(te_node(rapidxml::node_element,"green","0.1"));

color->append_node(te_node(rapidxml::node_element,"blue","0.1"));

color->append_node(te_node(rapidxml::node_element,"alpha","1.0"));

rapidxml::xml_node<>*size=te_node(rapidxml::node_element,"size",NULL);

size->append_node(te_node(rapidxml::node_element,"x","640"));

size->append_node(te_node(rapidxml::node_element,"y","480"));

node->append_node(size);

rapidxml::xml_node<>*mode=te_node(rapidxml::node_element,"mode","screenmode");

mode->append_attribute(te_attribute("fullscreen","false"));

node->append_node(mode);

std::stringtext;

rapidxml::print(std::back_inserter(text),doc,0);

std::cout<

std::ofstreamout("");

out<

return0;

}

//读取并修改

intReadAndChangeXml()

{

rapidxml::file<>fdoc("");

std::cout<<()<

rapidxml::xml_document<>doc;

<0>(());

std::cout<<()<

//!获取根节点

rapidxml::xml_node<>*root=_node();

std::cout<name()<

//!获取根节点第⼀个节点

rapidxml::xml_node<>*node1=root->first_node();

std::cout<name()<

rapidxml::xml_node<>*node11=node1->first_node();

std::cout<name()<

std::cout<value()<

//!修改之后再次保存

rapidxml::xml_node<>*size=root->first_node("size");

size->append_node(te_node(rapidxml::node_element,"w","1"));

size->append_node(te_node(rapidxml::node_element,"h","1"));

std::stringtext;

rapidxml::print(std::back_inserter(text),doc,0);

std::cout<

std::ofstreamout("../config/");

out<

return0;

}

voidcreatexml()

{

xml_document<>doc;

xml_node<>*root=te_node(node_pi,te_string("xmlversion='1.0'encoding='utf-8'"));

_node(root);

xml_node<>*node=te_node(node_element,"config","information");

_node(node);

xml_node<>*color=te_node(node_element,"color",NULL);

node->append_node(color);

color->append_node(te_node(node_element,"red","0.1"));

color->append_node(te_node(node_element,"green","0.1"));

color->append_node(te_node(node_element,"blue","0.1"));

color->append_node(te_node(node_element,"alpha","0.1"));

xml_node<>*size=te_node(node_element,"size",NULL);

node->append_node(size);

size->append_node(te_node(node_element,"x","640"));

size->append_node(te_node(node_element,"y","500"));

xml_node<>*mode=te_node(rapidxml::node_element,"mode","screenmode");

mode->append_attribute(te_attribute("fullscreen","false"));

node->append_node(mode);

std::stringtext;

rapidxml::print(std::back_inserter(text),doc,0);

std::cout<

std::ofstreamout("");

out<

}

voidreadAndChangexml()

{

file<>fdoc("");

xml_document<>doc;

std::cout<<()<

//<0>(());//修改节点值不会保存到⽂件中

(());//修改节点值会保存到⽂件中

std::cout<<"///"<

std::cout<<()<

//获取根节点

xml_node<>*root=_node();

std::cout<name()<

//!获取根节点第⼀个节点

xml_node<>*node1=root->first_node();

std::cout<name()<

xml_node<>*size=root->first_node("size");

xml_node<>*x=size->first_node("x");

x->value("540");

std::cout<first_node("x")->value()<

std::stringtext;

print(std::back_inserter(text),doc,0);

std::cout<

std::ofstreamout("");

out<

}

intmain()

{

//createxml();

readAndChangexml();

//CreateXml();

//system("pause");

return0;

}