TinyXML2读取和创建XML文件 分类： C/C++ 2015-03-14 13:29 94人阅读 评论(0) 收藏

    TinyXML2是simple、small、efficient C++ XML文件解析库！方便易于使用，是对TinyXML的升级改写！源码见本人上传到CSDN的TinyXML2.rar资源：http://download.csdn.net/detail/k346k346/8500915，或者到官网下载：https://github.com/leethomason/tinyxml2。

    使用方法：将tinyxml2.cpp和tinyxml2.h拷贝至项目目录，使用时包含#include "tinyxml2.h"和using namespace tinyxml2;

    1.创建XML文件。注意：xml文件必须先创建，可由fopen()进行创建，再交由XMLDocument进行写入操作。

int createTinyXML2(string xmlPath)

{

    FILE* fp=NULL;

    fp=fopen(xmlPath.c_str(),"w+");//创建空xml文件

    fclose(fp);

    XMLDocument doc;

    doc.LoadFile(xmlPath);//载入xml文件

    XMLDeclaration* declaration=doc.NewDeclaration();//添加xml文件头申明

    doc.InsertFirstChild(declaration);

    XMLElement *Root = doc.NewElement("Root");

    doc.InsertEndChild(Root);

    //insert Head

    XMLElement* Head=doc.NewElement("Head");

    Root->InsertEndChild(Head);

    //insert Create_Time

    time_t rawtime;//time_t为long型

    time(&rawtime);//获取从1970.1.1起的秒数

    struct tm *temp = localtime(&rawtime);

    char time_str[32];

    sprintf(time_str, "%04d-%02d-%02d %02d:%02d:%02d", temp->tm_year + 1900, temp->tm_mon + 1, temp->tm_mday,

       temp->tm_hour, temp->tm_min, temp->tm_sec);

    XMLElement* Create_Time = doc.NewElement("Create_Time");

    Create_Time->InsertFirstChild(doc.NewText(time_str));

    Head->InsertEndChild(Create_Time);

    //insert Algorithm

    XMLElement* Algorithm = doc.NewElement("Algorithm");

    Algorithm->InsertFirstChild(doc.NewText("MD5"));

    Algorithm->SetAttribute("ID",1);

    Head->InsertEndChild(Algorithm);

    //insert cipher_Num

    XMLElement* Cipher_Num = doc.NewElement("Cipher_Num");

    Cipher_Num->InsertFirstChild(doc.NewText("500"));

    Cipher_Num->SetAttribute("ID",2);

    Head->InsertEndChild(Cipher_Num);

    int targetNum=3;

    while (targetNum)

    {

       //insert Target

       Root->InsertEndChild(doc.NewElement("Target"));

       XMLElement* Target = Root->LastChildElement("Target");

       //insert HashValue to Target Node

       XMLElement* HashValue = doc.NewElement("HashValue");

       HashValue->InsertFirstChild(doc.NewText("5555"));

       Target->InsertEndChild(HashValue);

       //insert Salt to Target Node

       XMLElement* Salt = doc.NewElement("Salt");

       Salt->InsertFirstChild(doc.NewText("555"));

       Target->InsertEndChild(Salt);

       targetNum--;

     }

    int result=doc.SaveFile(xmlPath.c_str());

    return result;

}

    结果截图：

    2.读取XML文件

    
int readTinyXML2(string xmlPath)
{
    XMLDocument doc;
    doc.LoadFile(xmlPath.c_str());
    if(doc.Error())
    {
        cout<<"Read "<<xmlPath<<" file failed! "<<endl;
        return -1;
    }
    XMLElement *root = doc.RootElement();
    XMLElement *Head=root->FirstChildElement("Head");
    XMLElement *HeadChildNode=Head->FirstChildElement("Create_Time");
    string Create_Time=HeadChildNode->GetText();
    HeadChildNode=Head->FirstChildElement("Algorithm");
    string Algorithm=HeadChildNode->GetText();
    string AlgorithmID=HeadChildNode->Attribute("ID");
    HeadChildNode=Head->FirstChildElement("Cipher_Num");
    string Cipher_Num=HeadChildNode->GetText();
    string Cipher_NumID=HeadChildNode->Attribute("ID");
    XMLElement *Target=root->FirstChildElement("Target");
    XMLElement *TargetChildNode=NULL;
    int targetNum=3;
    char hash[3][32]={NULL};
    char salt[3][32]={NULL};
    for(int i=0;i<targetNum;i++)
    {
      TargetChildNode=Target->FirstChildElement("HashValue");
      strcpy(hash[i],TargetChildNode->GetText());
      TargetChildNode=Target->FirstChildElement("Salt");
      strcpy(salt[i],TargetChildNode->GetText());
      Target=Target->NextSiblingElement("Target");
    }
    //verify the read result from xml
    std::cout<<"Create_Time:"<<Create_Time<<endl;
    std::cout<<"Algorithm:"<<Algorithm<<" ID:"<<AlgorithmID<<endl;
    std::cout<<"Cipher_Num:"<<Cipher_Num<<" ID:"<<Cipher_NumID<<endl;
    for(int i=0;i<targetNum;i++)
    {
         std::cout<<"hash["<<i<<"]:"<<hash[i]<<endl;
         std::cout<<"salt["<<i<<"]:"<<salt[i]<<endl;
    }
    return 0;
}
    读取结果：
    

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