xml開發(fā)手冊c語言函數(shù) c語言 xml

怎么用C語言寫一個簡單的XML文件

用VC吧，下面有一個例子，你參照下：

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void?CreateXml()

{

CoInitialize(NULL);

//?創(chuàng)建文檔

MSXML2::IXMLDOMDocument2Ptr?pXMLDoc?=?NULL;

//創(chuàng)建DOMDocument對象

HRESULT?hr?=?pXMLDoc.CreateInstance(__uuidof(MSXML2::DOMDocument));

if?(!SUCCEEDED(hr))

{

return;

}

//?Create?the?Processing?Instruction

MSXML2::IXMLDOMProcessingInstructionPtr?pXMLProc?=?NULL;

pXMLProc?=?pXMLDoc-createProcessingInstruction("xml",?"version='1.0'?encoding='UTF-8'");

_variant_t?vNullVal;

vNullVal.vt?=?VT_NULL;

pXMLDoc-insertBefore(pXMLProc,?vNullVal);

//?創(chuàng)建根結(jié)點(diǎn)

_variant_t?varNodeType((short)MSXML2::NODE_ELEMENT);

MSXML2::IXMLDOMNodePtr?pXMLNodeRoot=?NULL;?

pXMLNodeRoot?=?pXMLDoc-createNode(varNodeType,?_T("Cases"),?_T(""));

//?添加根結(jié)點(diǎn)

pXMLDoc-appendChild(pXMLNodeRoot);

//?創(chuàng)建并添加下級結(jié)點(diǎn)

MSXML2::IXMLDOMNodePtr?pXMLNodeNode=?NULL;?

pXMLNodeNode?=?pXMLNodeRoot-appendChild(pXMLDoc-createElement(_T("Case")));

//?創(chuàng)建下級元素結(jié)點(diǎn)

MSXML2::IXMLDOMElementPtr?pXMLEle?=?NULL;

pXMLEle?=?pXMLDoc-createElement(_T("CopyFile"));

//?創(chuàng)建并設(shè)置下級結(jié)點(diǎn)屬性

MSXML2::IXMLDOMAttributePtr?pXMLAttr?=?NULL;

pXMLAttr?=?pXMLDoc-createAttribute(_T("src"));

pXMLAttr-nodeTypedValue?=?"C:\\test.txt";

pXMLEle-attributes-setNamedItem(pXMLAttr);

pXMLAttr?=?pXMLDoc-createAttribute(_T("dest"));

pXMLAttr-nodeTypedValue?=?"D:\\Test.txt";

pXMLEle-attributes-setNamedItem(pXMLAttr);

//?添加元素結(jié)點(diǎn)

pXMLNodeNode-appendChild(?pXMLEle);

MSXML2::IXMLDOMElementPtr?pXMLEle1?=?NULL;

pXMLEle1?=?pXMLDoc-createElement(_T("DelFile"));

pXMLEle1-appendChild(pXMLDoc-createTextNode("C:\\test.txt"));

//?添加元素結(jié)點(diǎn)

pXMLNodeNode-appendChild(?pXMLEle1);

//?保存文檔

pXMLDoc-save(_T("d:\\Test.xml"));

}

效果如下：

?xml?version="1.0"?encoding="UTF-8"???

Cases

Case

CopyFile?src="C:\test.txt"?dest="D:\Test.txt"?/?

DelFileC:\test.txt/DelFile?

/Case

/Cases

為了能夠讓MFC認(rèn)識MSXML2，我們需要引入相應(yīng)的dll，代碼如下;

#import "msxml4.dll"

C語言xml解析

把所有的數(shù)據(jù)當(dāng)做一個字符串

收到數(shù)據(jù)后先strstr(buffer,"?xml version=\"1.0\" encoding=\"UTF-8\"?");

如果返回的是NULL則表示沒有這段退出

buffer是你收到的數(shù)據(jù)起始地址

c語言如何調(diào)用xml的接口函數(shù)

/***************

?xml?version="1.0"?encoding="utf-8"?

Cases

case

No001/No

CopyFile?src="C:\test.txt"?dest="D:\test.txt"/CopyFile

/case

case

No002/No

DelFileC:\test.txt/DelFile

/case

/Cases

*******************/

//?我們用MFC來讀取上述xml，代碼如下：

void?ReadXml(CString?strXmlPath)

{

MSXML2::IXMLDOMDocumentPtr?pDoc;

::CoInitialize(NULL);

HRESULT?hr?=?pDoc.CreateInstance(__uuidof(MSXML2::DOMDocument40));?

if?(!SUCCEEDED(hr))?

{??

MessageBox(_T("創(chuàng)建DOMDocument對象失敗。\n請檢查運(yùn)行環(huán)境"),?_T("錯誤"),?MB_ICONERROR);?

return;

}

//?讀取xml

pDoc-put_async(VARIANT_FALSE);

VARIANT_BOOL?bhr?=?pDoc-load((_variant_t)strXmlPath);

if?(bhr?!=?VARIANT_TRUE)?{

MessageBox(_T("無法正確讀取xml文件"),?_T("錯誤"),?MB_ICONERROR);

return;

}

//?根節(jié)點(diǎn)取得

MSXML2::IXMLDOMElementPtr?root?=?pDoc-documentElement;

//?取得根節(jié)點(diǎn)的名字

_variant_t?strRootName?=?root-nodeName;

_bstr_t?wstrRootName(strRootName.bstrVal);

MSXML2::IXMLDOMNodeListPtr?nodeList?=?root-GetchildNodes();//cases

//?解析cases的子節(jié)點(diǎn)

ReadCases(nodeList);

}

void?ReadCases(MSXML2::IXMLDOMNodeListPtr?nodeList)

{

int?ilength?=?nodeList-Getlength();

for?(int?nodeCount?=?0;?nodeCount??ilength;?nodeCount++)?{

MSXML2::IXMLDOMNodePtr?nodePtr?=?nodeList-nextNode();

_variant_t?strNodeName?=?nodePtr-GetnodeName();

_variant_t?strNodeValue?=?nodePtr-GetnodeValue();

//?讀取case節(jié)點(diǎn)下的子節(jié)點(diǎn)

ReadCase(nodePtr-GetchildNodes());

}

void?ReadCase(MSXML2::IXMLDOMNodeListPtr?nodeList)

{

CString?strLogInfo;

strLogInfo.Empty();

CString?strNo;??????????????//?case編號

CString?strSrcFile;?????????//?源文件

CString?strDestFile;????????//?目標(biāo)文件

for?(int?nodeCount?=?0;?nodeCount??nodeList-Getlength();?nodeCount++)

{

MSXML2::IXMLDOMNodePtr?nodePtr?=?nodeList-nextNode();

_variant_t?strCaseNodeName?=?nodePtr-GetnodeName();

_variant_t?strCaseNodeValue?=?nodePtr-Gettext();

BSTR?bStrTemp?=?strCaseNodeName.bstrVal;

CString?strTemp?=?CString(bStrTemp);

SysFreeString(bStrTemp);

CString?strNodeName?=?strTemp;

//??節(jié)點(diǎn)的值，如何取得？

if?(0?==?strNodeName.CompareNoCase(_T("NO")))

{

strNo?=?(BSTR)strCaseNodeValue.pbstrVal;

//?取得的值可以打印出來

printf(strNo);

}

//?節(jié)點(diǎn)有屬性值，該怎么處理？

else?if?(0?==?strNodeName.CompareNoCase(_T("CopyFile")))

{

strSrcFile.Empty();

strDestFile.Empty();

//?取得節(jié)點(diǎn)的屬性值

MSXML2::IXMLDOMNamedNodeMapPtr?pDOMAttrList=?nodePtr-Getattributes();

for?(int?j?=?0;?j??pDOMAttrList-Getlength();?j++)

{

MSXML2::IXMLDOMNodePtr?pDOMAttr=?pDOMAttrList-Getitem(j);?

//?取得源文件路徑

if?(CompareNoCase((char*)pDOMAttr-GetnodeName(),?_T("src")))

{

strSrcFile?=?pDOMAttr-GetnodeTypedValue();

//?取得目標(biāo)文件路徑

}?else?if?(CompareNoCase((char*)pDOMAttr-GetnodeName(),?_T("dest")))

{

strDestFile?=pDOMAttr-GetnodeTypedValue();

}

CopyFile(strSrcFile,?strDestFile,?FALSE);

}

else?if?(0?==?strNodeName.CompareNoCase(_T("DelFile")))

{

strDestFile.Empty();

strDestFile?=?CString((BSTR)strCaseNodeValue.pbstrVal);

DeleteFile(strDestFile);

}

//?為了能夠讓MFC認(rèn)識MSXML2，我們需要引入相應(yīng)的dll，代碼如下;

#import?"msxml4.dll"

c語言如何解析xml并將所有內(nèi)容存入數(shù)組

/*?前段時間恰好做過類似的東西，代碼可以給你參考下。

*??Xml配置見最后

typedef?struct?SrcFileFmt

{

int???ColID;

char??ColCode[64];??????/*?字段英文名稱?*/

char??ColName[128];?????/*?字段中文名稱*/

char??ColType[20];??????/*?字段類型(包含長度)?*/

char??ColComment[128];??/*?字段描述?*/

}SrcFileFmt;

int?main(int?argc,?char?**argv)

{

SrcFileFmt?SrcFileFmt[128];

int?iNum?=?-1;

if?(?2??argc?)

{

printf("Usage:?%s?SrcXmlFile\n",?argv[0]);

return?-1;

}

iNum?=?parseSourceCfg(SrcCfgFile,?SrcFileFmt);

if?(iNum?==?-1)

{

return?-1;

}

return?0;

}

/*?調(diào)用此函數(shù)后，xml文件的內(nèi)容會被存儲到結(jié)構(gòu)體數(shù)組SrcFileFmt?srcfilefmt[]中

*?此函數(shù)依賴于libxml2-2.9.2.tar.xz

int?parseSourceCfg(char?*FileName,?SrcFileFmt?srcfilefmt[])

{?/*?解析源文件xml,FileName?為源xml文件名?*/

xmlDocPtr?doc;

xmlNodePtr?cur,?root;

char?sFileName[64]?=?{'\0'};

int?cnt?=?0;

if?(FileName?==?NULL)

{

return?-1;

}

sprintf(sFileName,?"%s.xml",?FileName);

doc?=?xmlParseFile(sFileName);

if?(doc?==?NULL)

{

return?-1;

}

root?=?xmlDocGetRootElement(doc);

if?(root?==?NULL)?{

xmlFreeDoc(doc);

return(-1);

}

if?(xmlStrcmp(root-name,?(const?xmlChar?*)?"SrcRoot"))

{

xmlFreeDoc(doc);

return?-1;

}

cur?=?root-xmlChildrenNode;

while?(cur?!=?NULL)?

{

if?((!xmlStrcmp(cur-name,?(const?xmlChar?*)"Column")))

{

xmlChar?*key;

xmlNodePtr?cur_sub?=?cur;

cur_sub?=?cur_sub-xmlChildrenNode;

while?(cur_sub?!=?NULL)?

{

if?((!xmlStrcmp(cur_sub-name,?(const?xmlChar?*)"ColID")))?{