Question

msxml修改xml文本节点内容

<DATA>
data文本信息
<TIME>1988.01.30</TIME>
<VIS>1</VIS>
</DATA>
如何通过MSXML修改“data文本信息”为“newInfo”？谢谢！

Answer 1

#include <windows.h>
#include <msxml2.h>
#include <objbase.h>
#include <iostream>
#include <locale>

#pragma comment(lib, "ole32.lib")
#pragma comment(lib, "oleaut32.lib")
#pragma comment(lib, "msxml2.lib")

LPCWSTR szXml =
    L"<DATA>"
    L"    data文本信息"
    L"    <TIME>1988.01.30</TIME>"
    L"    <VIS>1</VIS>"
    L"</DATA>";

int main()
{
    static std::locale loc("");
    std::locale::global(loc);
    
    CoInitialize(NULL);
    
    IXMLDOMDocument* pXml;
    if (CoCreateInstance(CLSID_DOMDocument30, 0, CLSCTX_INPROC_SERVER, IID_IXMLDOMDocument, (LPVOID*)&pXml) == S_OK) {
        VARIANT_BOOL vbSucc;
        BSTR sXml = SysAllocString(szXml);
        pXml->loadXML(sXml, &vbSucc);
        SysFreeString(sXml);
        if (vbSucc == VARIANT_TRUE) {
            IXMLDOMNode* pNode;
            if (pXml->get_firstChild(&pNode) == S_OK) {
                IXMLDOMNode* pText;
                if (pNode->get_firstChild(&pText) == S_OK) {
                    BSTR sText;
                    //pText->get_text(&sText);
                    //std::wcout << sText << std::endl;
                    //SysFreeString(sText);
                    sText = SysAllocString(L"newInfo");
                    pText->put_text(sText);
                    SysFreeString(sText);
                    pXml->get_xml(&sXml);
                    std::wcout << sXml << std::endl;
                    SysFreeString(sXml);
                    pText->Release();
                } else {
                    std::cerr << "Can't get text node" << std::endl;
                }
                pNode->Release();
            } else {
                std::cerr << "Can't get child node" << std::endl;
            }
        } else {
            std::cerr << "Can't load xml string" << std::endl;
        }
        pXml->Release();
    } else {
        std::cerr << "Can't create msxml object" << std::endl;
    }
    
    CoUninitialize();
    return 0;
}