C++ 操作XML文件 使用MSXML.DLL

时间:2021-12-28 01:53:19
使用MSXML.DLL读写XML;

文件顶部加入

#import "msxml3.dll";

using namespace MSXML2;

//这两句作用是,在程序的文件夹下生成MSXML3.TLH和MSXML3.TLI两个文件;

---------------------------------------------------------

创建一个XML文件;

 ::CoInitialize(NULL);
MSXML2::IXMLDOMDocumentPtr XMLDOC;
MSXML2::IXMLDOMElementPtr XMLROOT; HRESULT HR = XMLDOC.CreateInstance(_uuidof(MSXML2::DOMDocument30));
if(!SUCCEEDED(HR))
{
MessageBox("faild!!");
return;
}
XMLROOT = XMLDOC->createElement("ROOT");
XMLROOT->setAttribute("ID",""); //设置根标签的属性;
XMLDOC->appendChild(XMLROOT);
CString TMP;
MSXML2::IXMLDOMElementPtr XMLNODE;
for(int I=;I<;I++)
{
TMP.Format("%d",I);
XMLNODE = XMLDOC->createElement((_bstr_t)("NODE"+TMP));
XMLNODE->put_text((_bstr_t)"NODETEXTS");//设置标签的文本内容;
XMLNODE->setAttribute("ID",(_variant_t)TMP);//设置标签的属性及内容;
XMLNODE->setAttribute("NAME","NODENAME");
XMLROOT->appendChild(XMLNODE);
}
XMLDOC->save("XMLTEST.XML");
XMLNODE.Release();
XMLROOT.Release();
XMLDOC.Release();
::CoUninitialize(); ------------------------------------------------------------------ 读取一个XML; ::CoInitialize(NULL);
MSXML2::IXMLDOMDocumentPtr XMLDOC;
MSXML2::IXMLDOMElementPtr XMLROOT;
MSXML2::IXMLDOMElementPtr XMLELEMENT;
MSXML2::IXMLDOMNodeListPtr XMLNODES; //某个节点的所以字节点
MSXML2::IXMLDOMNamedNodeMapPtr XMLNODEATTS;//某个节点的所有属性;
MSXML2::IXMLDOMNodePtr XMLNODE;
HRESULT HR = XMLDOC.CreateInstance(_uuidof(MSXML2::DOMDocument30));
if(!SUCCEEDED(HR))
{
MessageBox("faild!!");
return;
}
XMLDOC->load("XMLTEST.XML");
XMLROOT = XMLDOC->GetdocumentElement();//获得根节点;
XMLROOT->get_childNodes(&XMLNODES);//获得根节点的所有子节点;
long XMLNODESNUM,ATTSNUM;
XMLNODES->get_length(&XMLNODESNUM);//获得所有子节点的个数;
CString TMP;
TMP.Format("%d",XMLNODESNUM);
MessageBox(TMP);
for(int I=;I<XMLNODESNUM;I++)
{
XMLNODES->get_item(I,&XMLNODE);//获得某个子节点;
XMLNODE->get_attributes(&XMLNODEATTS);//获得某个节点的所有属性;
XMLNODEATTS->get_length(&ATTSNUM);//获得所有属性的个数;
for(int J=;J<ATTSNUM;J++)
{
XMLNODEATTS->get_item(J,&XMLNODE);//获得某个属性;
CString T1 = (char*)(_bstr_t)XMLNODE->nodeName;
CString T2 = (char*)(_bstr_t)XMLNODE->text;
MessageBox(T1+" = "+T2);
}
//MessageBox((_bstr_t)XMLNODE->nodeName+": "+(_bstr_t)XMLNODE->text);
}
return;
//XMLDOC->save("XMLTEST.XML");
XMLNODES.Release();
XMLNODE.Release();
XMLROOT.Release();
XMLDOC.Release();
::CoUninitialize(); --------------------------------------------------------- 总结: XML文件档类型:MSXML2::IXMLDOMDocumentPtr; 单个元素类型:MSXML2::IXMLDOMElementPtr; 单个节点类型:MSXML2::IXMLDOMNodePtr; 所有子节点类型:MSXML2::IXMLDOMNodeListPtr; 所有属性类型:MSXML2::IXMLDOMNamedNodeMapPtr; 获得节点个数的方法:get_length(); 获得所有子节点的方法:get_childNodes(); 获得指定节点的方法:get_item(索引号,单个节点类型变量); 写入单个节点的文本内容方法:put_text((_bstr_t)"内容"); 获得单个节点的文本内容属性:XMLNODE->text; 获得单个属性的内容属性:XMLNODEATT->text; 节点名的属性为:XMLNODE->nodeName; --------------------------------------------------------------- XML创建文件一般过程: ::CoInitialize(NULL); HRESULT HR = XMLDOC.CreateInstance(_uuidof(MSXML2::DOMDocument30));
if(!SUCCEEDED(HR))
{
MessageBox("faild!!");
return;
}
XMLROOT = XMLDOC->createElement("ROOT");//创建文件; 操作文件..................... XMLDOC->save("XMLTEST.XML");//保存文件;
XMLNODE.Release();
XMLROOT.Release();
XMLDOC.Release();
::CoUninitialize(); ------------------------------------------------------------------------------ 加载文件过程序: ::CoInitialize(NULL);
HRESULT HR = XMLDOC.CreateInstance(_uuidof(MSXML2::DOMDocument30));
if(!SUCCEEDED(HR))
{
MessageBox("faild!!");
return;
}
XMLDOC->load("XMLTEST.XML"); 文件操作......................... XMLDOC->save("XMLTEST.XML");//可以保存对文件的修改;
XMLNODES.Release();
XMLNODE.Release();
XMLROOT.Release();
XMLDOC.Release();
::CoUninitialize();