转载:http://blog.csdn.net/L_Andy/article/details/40615517
首先在sourceforge上下载tinyXML类库,地址:http://sourceforge.net/projects/tinyxml/
然后解压缩tinyXML后,将这六个文件添加到你的c++工程中,分别是tinystr.h、tinystr.cpp、tinyxml.h、tinyxml.cpp、tinyxmlerror.cpp、tinyxmlparser.cpp。在需要操作xml文件的地方,使用如下代码,就可以引入tinyXML类库。
在使用的地方导入头文件
#include "tinyxml.h"
下面我用个简单的例子说明如何使用tinyXML操作xml文件。在讲例子之前我先说说tinyXML中主要类和xml文档之间的对应关系。下面是tinyXML中主要class的类图,反应各个类之间的静态关系。
引用来自tinyXML文档
TiXmlBase是所有类的基类,TiXmlNode、TiXmlAttribute两个类都继承来自TiXmlBase类,其中TiXmlNode类指的是所有被<...>...<.../>包括的内容,而xml中的节点又具体分为以下几方面内容,分别是声明、注释、节点以及节点间的文本,因此在TiXmlNode的基础上又衍生出这几个类TiXmlComment、TiXmlDeclaration、TiXmlDocument、TiXmlElement、TiXmlText、TiXmlUnknown,分别用来指明具体是xml中的哪一部分。TiXmlAttribute类不同于TiXmlNode,它指的是在尖括号里面的内容,像<... ***=...>,其中***就是一个属性。这块我具体用一个xml文档说明一下,内容如下:
<?xml version="1.0" encoding="UTF-8"?> <phonebook> <!--one item behalfs one contacted person.--> <item> <name>miaomaio</name> <addr>Shaanxi Xi'an</addr> <tel>13759911917</tel> <email>miaomiao@home.com</email> </item> <item> <name>gougou</name> <addr>Liaoning Shenyang</addr> <tel>15840330481</tel> <email>gougou@home.com</email> </item> <!--more contacted persons.--> </phonebook>
- 像TiXmlDeclaration指的就是<?xml version="1.0" encoding="UTF-8"?>,
- 像TiXmlComment指的就是<!--one item behalfs one contacted person.-->、 <!--more contacted persons.-->,
- 像TiXmlDocument指的就是整个xml文档,
- 像TiXmlElement指的就是<phonebook>、<item>、<name>、<addr>等等这些节点,
- 像TiXmlText指的就是‘gougou’、‘15840330481’这些夹在<item>与</item>、<name>与</name>、<addr>与</addr>之间的文本文字,
- 像TiXmlAttribute指的就是<?xml version="1.0" encoding="UTF-8"?>节点中version、encoding,
- 除此之外就是TiXmlUnknown。
下面是我自己写的一段读xml文件的c++代码,以及再往xml写入一个item的源代码,其中phonebookdata.xml中的内容就是上面xml,仅供参考。
//______________________________________________________________________
// Read information from xml file.
// define xml file path, as follow , we use relative path,
// but you can use absolute path also.
const char* filepath = "phonebookdata.xml";
TiXmlDocument doc(filepath);
bool loadOkay = doc.LoadFile();
// faile to load 'phonebookdata.xml'.
if (!loadOkay) {
printf( "Could not load test file %s. Error='%s'. Exiting.
", filepath,doc.ErrorDesc() );
exit( 1 );
}
// get dom root of 'phonebookdata.xml', here root should be 'phonebook'.
TiXmlElement* root = doc.RootElement();
printf("_______________________________________
");
printf(" contacted person information
");
// trace every items below root.
for( TiXmlNode* item = root->FirstChild( "item" );
item;
item = item->NextSibling( "item" ) ) {
printf("_______________________________________
");
// read name.
TiXmlNode* child = item->FirstChild();
const char* name = child->ToElement()->GetText();
if (name) {
printf("name:%s
",name);
} else {
printf("name:
");
}
// read address.
child = item->IterateChildren(child);
const char* addr = child->ToElement()->GetText();
if (addr) {
printf("addr:%s
",addr);
} else {
printf("addr:
");
}
// read telephone no.
child = item->IterateChildren(child);
const char* tel = child->ToElement()->GetText();
if (tel) {
printf("tel:%s
",tel);
} else {
printf("tel:
");
}
// read e-mail.
child = item->IterateChildren(child);
const char* email = child->ToElement()->GetText();
if(email) {
printf("email:%s
",email);
} else {
printf("email:
");
}
printf("
");
}
//______________________________________________________________________
//______________________________________________________________________
// Add information to xml file and save it.
TiXmlElement* writeRoot = doc.RootElement();
TiXmlNode* newNode = new TiXmlElement("item");
const TiXmlNode* name4NewNode = new TiXmlElement("name");
newNode->InsertEndChild(*name4NewNode)->InsertEndChild(TiXmlText("pipi"));
const TiXmlNode* addr4NewNode = new TiXmlElement("addr");
newNode->InsertEndChild(*addr4NewNode)->InsertEndChild(TiXmlText("Shaanxi Xianyang"));
const TiXmlNode* tel4NewNode = new TiXmlElement("tel");
newNode->InsertEndChild(*tel4NewNode)->InsertEndChild(TiXmlText("02937310627"));
const TiXmlNode* email4NewNode = new TiXmlElement("email");
newNode->InsertEndChild(*email4NewNode)->InsertEndChild(TiXmlText("pipi@home.com"));
writeRoot->InsertEndChild(*newNode);
doc.SaveFile();
//______________________________________________________________________