【原创】C++利用IXMLDOM解析XML文件。
项目是在wince平台下做的,但是解析过程和代码却别不大,贴出代码,留做备份。
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 | // TestIXML.cpp : Defines the entry point for the console application. // #include "stdafx.h" #include <windows.h> #include <comutil.h> #include <stdlib.h> #include <stdio.h> #include <MsXml2.h> #pragma comment(lib, "ole32.lib") #pragma comment(lib, "oleaut32.lib") void TestXML(); void TestSound(); #define TIROSLIB_DBG_FILE "\\Test_Pro.log" void dbgprintf( const char *str, ...) { va_list ap; FILE *fh = NULL; if (fh = fopen (TIROSLIB_DBG_FILE, "a" )) { va_start (ap, str); vfprintf (fh, str, ap); fprintf (fh, "\n" ); va_end (ap); fclose (fh); fh = NULL; } } typedef struct _weather_info_node { char szDate[32]; char szCondition[5]; char szWind[32]; float fLowTemp; float fHighTemp; int nReserved; struct _weather_info_node *lpNext; }weather_info_node; weather_info_node *m_lpWeatherNode = NULL; weather_info_node *NewWeatherNode() { weather_info_node *newNode = (weather_info_node *) malloc ( sizeof (weather_info_node)); memset (newNode, 0, sizeof (weather_info_node)); newNode->lpNext = NULL; return newNode; } void DestoryWeatherList(weather_info_node **weatherList) { weather_info_node *DElem, *next; DElem = *weatherList; while (DElem) { next = DElem->lpNext; free (DElem); DElem = next; } *weatherList = NULL; } BOOL ParseWeatherXml( const char *lpXmlPath) { //xml节点名的枚举 enum node_Names{xml_day, xml_low, xml_high, xml_condition, xml_wind}; IXMLDOMDocument *pXMLDocument= NULL; IXMLDOMNode *pNode = NULL; IXMLDOMNodeList *pNodeList = NULL; IXMLDOMNodeList *pChildNodeList = NULL; IXMLDOMParseError * pObjError = NULL; IXMLDOMNamedNodeMap *pNodeMap = NULL; //DOMNodeType nodeType; VARIANT vXmlPath; VARIANT vValue; VARIANT_BOOL vbStatus; BSTR bstr = NULL; long lLength = 0; weather_info_node *lpTemp = NULL; int nLen = strlen (lpXmlPath) + 1; int nwLen = MultiByteToWideChar(CP_ACP, 0, lpXmlPath, nLen, NULL, 0); TCHAR lpSzXmlPath[256]; MultiByteToWideChar(CP_ACP, 0, lpXmlPath, nLen, lpSzXmlPath, nwLen); VariantInit(&vXmlPath); V_BSTR(&vXmlPath) = SysAllocString(lpSzXmlPath); V_VT(&vXmlPath) = VT_BSTR; CoInitializeEx(NULL, COINIT_MULTITHREADED); HRESULT hr = CoCreateInstance(CLSID_DOMDocument, NULL, CLSCTX_INPROC_SERVER, IID_IXMLDOMDocument2, ( void **)&pXMLDocument); hr = pXMLDocument->put_async(VARIANT_FALSE); if (FAILED(hr)) { printf ( "Failed to set async property\n" ); } hr = pXMLDocument->put_validateOnParse(VARIANT_FALSE); if (FAILED(hr)) { printf ( "Failed to set validateOnParse\n" ); } hr = pXMLDocument->put_resolveExternals(VARIANT_FALSE); if (FAILED(hr)) { printf ( "Failed to disable resolving externals.\n" ); } hr = pXMLDocument->load(vXmlPath, &vbStatus); if (vbStatus != VARIANT_TRUE) { hr = pXMLDocument->get_parseError(&pObjError); hr = pObjError->get_reason(&bstr); printf ( "Failed to load DOM from books.xml. %S\n" ,bstr); } hr = pXMLDocument->get_xml(&bstr); if (FAILED(hr)) { printf ( "xml 的内容:\n%S\n" , bstr); SysFreeString(bstr); } hr = pXMLDocument->selectSingleNode(L "//weather" , &pNode); //hr = pNode->get_nodeName(&bstr); hr = pNode->get_childNodes(&pNodeList); hr = pNodeList->get_length(&lLength); for ( int nIndex = 0; nIndex != lLength; ++nIndex) { if (0 == nIndex) { m_lpWeatherNode = NewWeatherNode(); lpTemp = m_lpWeatherNode; } else { lpTemp->lpNext = NewWeatherNode(); lpTemp = lpTemp->lpNext; } hr = pNodeList->get_item(nIndex, &pNode); hr = pNode->get_childNodes(&pChildNodeList); long lChildLength = 0; hr = pChildNodeList->get_length(&lChildLength); for ( int nChildIndex = 0; nChildIndex != lChildLength; ++nChildIndex) { //hr = pNode->get_nodeName(&bstr); switch (nChildIndex) { case xml_day: hr = pChildNodeList->get_item(nChildIndex, &pNode); hr = pNode->get_attributes(&pNodeMap); hr = pNodeMap->get_item(0, &pNode); hr = pNode->get_nodeTypedValue(&vValue); memcpy (lpTemp->szDate, ( char *)(_bstr_t)vValue.bstrVal, strlen (( char *)(_bstr_t)vValue.bstrVal)); break ; case xml_low: hr = pChildNodeList->get_item(nChildIndex, &pNode); hr = pNode->get_attributes(&pNodeMap); hr = pNodeMap->get_item(0, &pNode); hr = pNode->get_nodeTypedValue(&vValue); lpTemp->fLowTemp = atof (( char *)(_bstr_t)vValue.bstrVal); break ; case xml_high: hr = pChildNodeList->get_item(nChildIndex, &pNode); hr = pNode->get_attributes(&pNodeMap); hr = pNodeMap->get_item(0, &pNode); hr = pNode->get_nodeTypedValue(&vValue); lpTemp->fHighTemp = atof (( char *)(_bstr_t)vValue.bstrVal); break ; case xml_condition: hr = pChildNodeList->get_item(nChildIndex, &pNode); hr = pNode->get_attributes(&pNodeMap); hr = pNodeMap->get_item(0, &pNode); hr = pNode->get_nodeTypedValue(&vValue); memcpy (lpTemp->szCondition, ( char *)(_bstr_t)vValue.bstrVal, strlen (( char *)(_bstr_t)vValue.bstrVal)); break ; case xml_wind: hr = pChildNodeList->get_item(nChildIndex, &pNode); hr = pNode->get_attributes(&pNodeMap); hr = pNodeMap->get_item(0, &pNode); hr = pNode->get_nodeTypedValue(&vValue); memcpy (lpTemp->szWind, ( char *)(_bstr_t)vValue.bstrVal, strlen (( char *)(_bstr_t)vValue.bstrVal)); break ; default : break ; } } } pChildNodeList->Release(); pNodeMap->Release(); pNodeList->Release(); pNode->Release(); pXMLDocument->Release(); /* hr = pNodeList->get_item(3,&pNode); hr = pNode->get_attributes(&pMap); hr = pMap->get_item(0, &pNode); hr = pNode->get_nodeTypedValue(&vValue); */ return TRUE; } void TestMyXml() { char *lpTempPath = "\\Storage Card\\WeatherXML20101122150441.txt" ; ParseWeatherXml(lpTempPath); while (m_lpWeatherNode != NULL) { dbgprintf( "Date = %s,Low = %f, High = %f, Condition = %s, Wind = %s" , m_lpWeatherNode->szDate, m_lpWeatherNode->fLowTemp, m_lpWeatherNode->fHighTemp, m_lpWeatherNode->szCondition, m_lpWeatherNode->szWind); m_lpWeatherNode = m_lpWeatherNode->lpNext; } } int _tmain( int argc, _TCHAR* argv[]) { TestMyXml(); //TestXML(); return 0; } void TestXML() { IXMLDOMDocument *pXMLDocument= NULL; IXMLDOMNode *pNode = NULL; IXMLDOMNodeList *pNodeList = NULL; IXMLDOMParseError * pObjError = NULL; DOMNodeType nodeType; IXMLDOMNamedNodeMap *pMap = NULL; VARIANT v1; VARIANT variantvalue; VARIANT_BOOL status; BSTR bstr = NULL; VariantInit(&v1); V_BSTR(&v1) = SysAllocString(L "D:\\WeatherXML20101122150441.txt" ); V_VT(&v1) = VT_BSTR; // 首先必须调用CoInitialize CoInitializeEx(NULL, COINIT_MULTITHREADED); // 创建一msxml 文档实例,返回IXMLDOMDocument2接口。 HRESULT hr = CoCreateInstance(CLSID_DOMDocument, NULL, CLSCTX_INPROC_SERVER, IID_IXMLDOMDocument2, ( void **)&pXMLDocument); hr = pXMLDocument->put_async(VARIANT_FALSE); if (FAILED(hr)) { printf ( "Failed to set async property\n" ); //goto clean; } hr = pXMLDocument->put_validateOnParse(VARIANT_FALSE); if (FAILED(hr)) { printf ( "Failed to set validateOnParse\n" ); //goto clean; } hr = pXMLDocument->put_resolveExternals(VARIANT_FALSE); if (FAILED(hr)) { printf ( "Failed to disable resolving externals.\n" ); //goto clean; } hr = pXMLDocument->load(v1, &status); if (status!=VARIANT_TRUE) { hr = pXMLDocument->get_parseError(&pObjError); hr = pObjError->get_reason(&bstr); printf ( "Failed to load DOM from books.xml. %S\n" ,bstr); //goto clean; } hr = pXMLDocument->get_xml(&bstr); printf ( "foo.xml 的内容:\n%S\n" , bstr); SysFreeString(bstr); hr = pXMLDocument->selectSingleNode(L "//fc" , &pNode); hr = pNode->get_nodeName(&bstr); hr = pNode->get_childNodes(&pNodeList); long length; hr = pNodeList->get_length(&length); hr = pNodeList->get_item(3,&pNode); hr = pNode->get_attributes(&pMap); hr = pMap->get_item(0, &pNode); hr = pNode->get_nodeTypedValue(&variantvalue); //hr = pNode->get_childNodes(&pNodeList); //hr = pNodeList->get_item(0, &pNode); //hr = pNode->get_nodeType(&nodeType); //hr = pNode->get_nodeValue(&variantvalue); //hr = pNode->get_dataType(&variantvalue); // hr = pNode->get_xml(&bstr); //hr = pNode->get_nodeType(&nodeType); // variantvalue.vt = nodeType; // hr = pNode->get_dataType(&variantvalue); // hr = pNode->get_nodeValue(&variantvalue); //hr = pNode->get_nodeTypedValue(&variantvalue); // hr = pNode->get_ // if (FAILED(hr)) { // hr = pXMLDocument->get_parseError(&pObjError); // hr = pObjError->get_reason(&bstr); // printf("Failed to load DOM from books.xml. %S\n",bstr); // //goto clean; // } //hr = pNode->get_nodeName(&bstr); //DOMNodeType nodeType; //得到节点类型 //pNode->get_nodeType(&nodeType); //节点名称 // // BSTR nodeName; // // hr = pNode->get_nodeName(&nodeName); // // char *cNodeName = (char *)nodeName; //cNodeName = ConvertBSTRToString(nodeName); //strName=(char *)pNode->GetnodeName(); //节点属性,放在链表中 // MSXML2::IXMLDOMNamedNodeMapPtr pAttrMap=NULL; // MSXML2::IXMLDOMNodePtr pAttrItem; // _variant_t variantvalue; // pNode->get_attributes(&pAttrMap); // // long count; // count=pAttrMap->get_length(&count); // // pAttrMap->get_item(0,&pAttrItem); // //取得节点的值 // pAttrItem->get_nodeTypedvalue(&variantvalue); // m_strId=(char *)(_bstr_t)variantvalue; // // UpdateData(FALSE); //hr = pXMLDocument->getProperty(L"<day data/>", &v2); //hr = pXMLDocument->save(v1); //pXMLDocument->Release(); CoUninitialize(); } |
xml文件:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 | < weather pd="2010-11-22 08:00:00" xmlns="http://www.xxx.com"> < fc > < day data="2010-11-22 08:00:00"/> < low data="-2.0"/> < high data="9.0"/> < condition data="晴"/> < wind data="静风、小于3级"/> < indexes > < index type="3" data="6"/> < index type="4" data="6"/> < index type="1" data="1"/> < index type="2" data="2"/> </ indexes > </ fc > < fc > < day data="2010-11-23 08:00:00"/> < low data="1.0"/> < high data="9.0"/> < condition data="阴"/> < wind data="静风、小于3级"/> </ fc > < fc > < day data="2010-11-24 08:00:00"/> < low data="-4.0"/> < high data="6.0"/> < condition data="晴"/> < wind data="北风转静风、3级转小于3级"/> </ fc > </ weather > |
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