XML作為資料傳遞的一種方式,在Android中有友善使用的解析方式,在windows平台下面也有很多解析xml檔案的開源庫。我經常使用的是tinyxml。
1.加載XML檔案
int loadXML()
{
TiXmlDocument doc;
if(!doc.LoadFile("C:\\Documents and Settings\\tcxt-yangzy\\桌面\\Task.xml"))
{
cerr << doc.ErrorDesc() << endl;
return -1;
}
TiXmlElement* root = doc.FirstChildElement();
if(root == NULL)
{
cerr << "Failed to load file: No root element." << endl;
doc.Clear();
return -2;
}
string str_count = root->Attribute("Count");
int my_task_count = atoi(str_count.c_str());
if( my_task_count <= 0 )
{
return -1;
}
MYTASK* my_task_list = new MYTASK[my_task_count];
memset( my_task_list , 0 , my_task_count*sizeof(MYTASK) );
int i = 0;
for(TiXmlElement* elem_mytask = root->FirstChildElement("MyTask"); elem_mytask != NULL; elem_mytask = elem_mytask->NextSiblingElement("MyTask"))
{
//string elemName = elem->Value();
//string elemText = elem->GetText();
string attr_task_name =UTF8ToANSI( elem_mytask->Attribute("TaskName") ) ;
string attr_task_author =UTF8ToANSI( elem_mytask->Attribute("TaskAuthor"));
string attr_task_date =UTF8ToANSI( elem_mytask->Attribute("TaskDate"));
string attr_task_dd =UTF8ToANSI( elem_mytask->Attribute("DataDictionaryCount"));
string attr_shape =UTF8ToANSI( elem_mytask->Attribute("ShapeFile"));
string attr_tiff =UTF8ToANSI( elem_mytask->Attribute("TIFF"));
TiXmlElement* elem_prj = elem_mytask->FirstChildElement("PrjFile");
string attr_prj_name =UTF8ToANSI( elem_prj->Attribute("Name") ) ;
string attr_prj_path =UTF8ToANSI( elem_prj->Attribute("Path"));
my_task_list[i].task_name = attr_task_name;
my_task_list[i].task_author = attr_task_author;
my_task_list[i].task_date = attr_task_date;
my_task_list[i].data_dictionary_count = attr_task_dd;
my_task_list[i].shape = attr_shape;
my_task_list[i].tiff = attr_tiff;
my_task_list[i].prj.prj_name = attr_prj_name;
my_task_list[i].prj.prj_path = attr_prj_path;
int dd_count = atoi(attr_task_dd.c_str());
if( dd_count > 0)
{
my_task_list[i].dd_list = new DATADICTIONARY[dd_count];
memset( my_task_list[i].dd_list , 0 , dd_count * sizeof( DATADICTIONARY ) );
int j = 0 ;
for(TiXmlElement* elem_dd = elem_mytask->FirstChildElement("DataDictionary"); elem_dd != NULL; elem_dd = elem_dd->NextSiblingElement("DataDictionary"))
{
string attr_dd_name =UTF8ToANSI( elem_dd->Attribute("Name") ) ;
string attr_dd_path =UTF8ToANSI( elem_dd->Attribute("Path"));
my_task_list[i].dd_list[j].dd_name = attr_dd_name;
my_task_list[i].dd_list[j].dd_path = attr_dd_path;
j++;
}
}
i++;
}
doc.Clear();
return 0;
}
/*!
* \brief 通過根節點和節點名擷取節點指針。
*
* \param pRootEle xml檔案的根節點。
* \param strNodeName 要查詢的節點名
* \param Node 需要查詢的節點指針
* \return 是否找到。true為找到相應節點指針,false表示沒有找到相應節點指針。
*/
bool GetNodePointerByNameEx(TiXmlElement* pRootEle,std::string &strNodeName,string strNodeAttr,string strNodeValue ,TiXmlElement* &Node)
{
// 假如等于根節點名,就退出
string attr_value = UTF8ToANSI( pRootEle->Attribute(strNodeAttr.c_str()));
if (strNodeName==pRootEle->Value() && attr_value == strNodeValue )
{
Node = pRootEle;
return true;
}
TiXmlElement* pEle = pRootEle;
for (pEle = pRootEle->FirstChildElement(); pEle; pEle = pEle->NextSiblingElement())
{
//遞歸處理子節點,擷取節點指針
if(GetNodePointerByNameEx(pEle,strNodeName,strNodeAttr,strNodeValue,Node))
return true;
}
return false;
}
bool GetNodePointerByName(TiXmlElement* pRootEle,std::string strNodeName,TiXmlElement* &Node)
{
// 假如等于根節點名,就退出
if (strNodeName==pRootEle->Value())
{
Node = pRootEle;
return true;
}
TiXmlElement* pEle = pRootEle;
for (pEle = pRootEle->FirstChildElement(); pEle; pEle = pEle->NextSiblingElement())
{
//遞歸處理子節點,擷取節點指針
if(GetNodePointerByName(pEle,strNodeName,Node))
return true;
}
return false;
}
/*!
* \brief 删除指定節點的值。
*
* \param XmlFile xml檔案全路徑。
* \param strNodeName 指定的節點名。
* \return 是否成功。true為成功,false表示失敗。
*/
bool DelNode(std::string XmlFile,std::string strNodeName ,string node_arrt, string node_arrt_value)
{
// 定義一個TiXmlDocument類指針
TiXmlDocument *pDoc = new TiXmlDocument();
if (NULL==pDoc)
{
return false;
}
pDoc->LoadFile(XmlFile.c_str());
TiXmlElement *pRootEle = pDoc->RootElement();
if (NULL==pRootEle)
{
return false;
}
TiXmlElement *pNode = NULL;
GetNodePointerByNameEx(pRootEle,strNodeName,node_arrt,node_arrt_value,pNode);
string attr_value = UTF8ToANSI( pNode->Attribute(node_arrt.c_str()));
// 假如是根節點
if (pRootEle==pNode )
{
if(pDoc->RemoveChild(pRootEle))
{
pDoc->SaveFile(XmlFile.c_str());
return true;
}
else
return false;
}
// 假如是其它節點
if (NULL!=pNode)
{
TiXmlNode *pParNode = pNode->Parent();
if (NULL==pParNode)
{
return false;
}
TiXmlElement* pParentEle = pParNode->ToElement();
if (NULL!=pParentEle)
{
if(pParentEle->RemoveChild(pNode))
{
pDoc->SaveFile(XmlFile.c_str());
return true;
}
else
return false;
}
}
else
{
return false;
}
return false;
}
//修改節點其實和查詢指定節點的值有點類似,也分為兩個函數,一個實作修改文本。另一個負責修改屬性。
bool ModifyNode_Text(const std::string& XmlFile,const std::string& strNodeName,const std::string& strText)
{
// 定義一個TiXmlDocument類指針
TiXmlDocument *pDoc = new TiXmlDocument();
if (NULL==pDoc)
{
return false;
}
pDoc->LoadFile(XmlFile.c_str());
TiXmlElement *pRootEle = pDoc->RootElement();
if (NULL==pRootEle)
{
return false;
}
TiXmlElement *pNode = NULL;
GetNodePointerByName(pRootEle,strNodeName.c_str(),pNode);
if (NULL!=pNode)
{
pNode->Clear(); // 首先清除所有文本
// 然後插入文本,儲存檔案
TiXmlText *pValue = new TiXmlText(strText.c_str());
pNode->LinkEndChild(pValue);
pDoc->SaveFile(XmlFile.c_str());
return true;
}
else
return false;
}
bool ModifyNode_Attribute(const std::string& XmlFile,const std::string& strNodeName,
const std::map<std::string,std::string> &AttMap)
{
typedef std::pair <std::string,std::string> String_Pair;
// 定義一個TiXmlDocument類指針
TiXmlDocument *pDoc = new TiXmlDocument();
if (NULL==pDoc)
{
return false;
}
pDoc->LoadFile(XmlFile.c_str());
TiXmlElement *pRootEle = pDoc->RootElement();
if (NULL==pRootEle)
{
return false;
}
TiXmlElement *pNode = NULL;
GetNodePointerByName(pRootEle,strNodeName,pNode);
if (NULL!=pNode)
{
TiXmlAttribute* pAttr = NULL;
std::string strAttName = ("");
std::string strAttValue = ("");
for (pAttr = pNode->FirstAttribute(); pAttr; pAttr = pAttr->Next())
{
strAttName = pAttr->Name();
std::map<std::string,std::string>::const_iterator iter;
for (iter=AttMap.begin();iter!=AttMap.end();iter++)
{
if (strAttName==iter->first)
{
pAttr->SetValue(iter->second.c_str());
}
}
}
pDoc->SaveFile(XmlFile.c_str());
return true;
}
else
{
return false;
}
}
/*!
* /brief 增加指定節點的文本。
*
* /param XmlFile xml檔案全路徑。
* /param strParNodeName 要增加的節點的父節點。
* /param strNodeName 指定的節點名。
* /param strText 要增加的文本
* /return 是否成功。true為成功,false表示失敗。
*/
bool AddNode_Text(const std::string& XmlFile,const std::string& strParNodeName,const std::string& strNodeName,const std::string& strText)
{
// 定義一個TiXmlDocument類指針
TiXmlDocument *pDoc = new TiXmlDocument();
if (NULL==pDoc)
{
return false;
}
pDoc->LoadFile(XmlFile.c_str());
TiXmlElement *pRootEle = pDoc->RootElement();
if (NULL==pRootEle)
{
return false;
}
TiXmlElement *pNode = NULL;
GetNodePointerByName(pRootEle,strParNodeName,pNode);
if (NULL!=pNode)
{
// 生成子節點:pNewNode
TiXmlElement *pNewNode = new TiXmlElement(strNodeName.c_str());
if (NULL==pNewNode)
{
return false;
}
// 設定節點文本,然後插入節點
TiXmlText *pNewValue = new TiXmlText(strText.c_str());
pNewNode->LinkEndChild(pNewValue);
pNode->InsertEndChild(*pNewNode);
pDoc->SaveFile(XmlFile.c_str());
return true;
}
else
return false;
}
bool AddNode_Text_EX(const std::string& XmlFile,const std::string& strParNodeName,const std::string& strNodeName,const std::string& strText)
{
// 定義一個TiXmlDocument類指針
TiXmlDocument *pDoc = new TiXmlDocument();
if (NULL==pDoc)
{
return false;
}
pDoc->LoadFile(XmlFile.c_str());
TiXmlElement *pRootEle = pDoc->RootElement();
if (NULL==pRootEle)
{
return false;
}
TiXmlElement *pNode = NULL;
GetNodePointerByName(pRootEle,strParNodeName,pNode);
if (NULL!=pNode)
{
// 生成子節點:pNewNode
TiXmlElement *pNewNode = new TiXmlElement(strNodeName.c_str());
if (NULL==pNewNode)
{
return false;
}
// 設定節點文本,然後插入節點
TiXmlText *pNewValue = new TiXmlText(strText.c_str());
pNewNode->LinkEndChild(pNewValue);
pNode->InsertEndChild(*pNewNode);
pDoc->SaveFile(XmlFile.c_str());
return true;
}
else
return false;
}
/*!
* /brief 增加節點。
*
* /param XmlFile xml檔案全路徑。
* /param strParNodeName 要增加的節點的父節點。
* /param strNodeName 指定的節點名。
* /param AttMap 要增加的節點設定的屬性值,這是一個map,前一個為屬性名,後一個為屬性值
* /return 是否成功。true為成功,false表示失敗。
*/
bool AddNode_Attribute(const std::string& XmlFile
,const std::string& strParNodeName
,const std::string strNodeName
,const std::map<std::string,std::string> &AttMap)
{
// 定義一個TiXmlDocument類指針
TiXmlDocument *pDoc = new TiXmlDocument();
if (NULL==pDoc)
{
return false;
}
pDoc->LoadFile(XmlFile.c_str());
TiXmlElement *pRootEle = pDoc->RootElement();
if (NULL==pRootEle)
{
return false;
}
TiXmlElement *pNode = NULL;
GetNodePointerByName(pRootEle,strParNodeName,pNode);
if (NULL!=pNode)
{
// 生成子節點:pNewNode
TiXmlElement *pNewNode = new TiXmlElement(strNodeName.c_str());
if (NULL==pNewNode)
{
return false;
}
// 設定節點的屬性值,然後插入節點
std::map<std::string,std::string>::const_iterator iter;
for (iter=AttMap.begin();iter!=AttMap.end();iter++)
{
pNewNode->SetAttribute(iter->first.c_str(),iter->second.c_str());
}
pNode->InsertEndChild(*pNewNode);
pDoc->SaveFile(XmlFile.c_str());
return true;
}
else
return false;
}
bool AddNode_Attribute_EX(const std::string& XmlFile
,std::string strParNodeName//父節點
,std::string strNodeName//目前節點
,string node_attr//目前節點屬性
,string node_attr_value//目前節點屬性内容
,std::map<std::string,std::string> &AttMap)
{
// 定義一個TiXmlDocument類指針
TiXmlDocument *pDoc = new TiXmlDocument();
if (NULL==pDoc)
{
return false;
}
pDoc->LoadFile(XmlFile.c_str());
TiXmlElement *pRootEle = pDoc->RootElement();
if (NULL==pRootEle)
{
return false;
}
TiXmlElement *pNode = NULL;
GetNodePointerByNameEx(pRootEle,strParNodeName,node_attr,node_attr_value,pNode);
if (NULL!=pNode)
{
// 生成子節點:pNewNode
TiXmlElement *pNewNode = new TiXmlElement(strNodeName.c_str());
if (NULL==pNewNode)
{
return false;
}
// 設定節點的屬性值,然後插入節點
std::map<std::string,std::string>::const_iterator iter;
for (iter=AttMap.begin();iter!=AttMap.end();iter++)
{
pNewNode->SetAttribute(iter->first.c_str(),iter->second.c_str());
}
pNode->InsertEndChild(*pNewNode);
pDoc->SaveFile(XmlFile.c_str());
return true;
}
else
return false;
}
int _tmain(int argc, _TCHAR* argv[])
{
//loadXML();
//DelNode( XML_PATH,"MyTask","TaskName","我的任務4" );
/*
//ModifyNode_Text( XML_PATH ,"Tasks" , "321414" );
map<string , string> arrt ;
arrt["Count"] = "100";
//ModifyNode_Attribute(XML_PATH,"MyTask",arrt);
arrt["TaskName"] = ANSIToUTF8("taskfour");
arrt["TaskAuthor"] = ANSIToUTF8("王二小");
arrt["TaskDate"] = "2015-07-10 17:37";
arrt["DataDictionaryCount"] = "3";
arrt["ShapeFile"] = "";
arrt["TIFF"] = "";
//AddNode_Text(XML_PATH,"MyTask","1321","1314546");
AddNode_Attribute(XML_PATH,"Tasks","MyTask",arrt);
map<string , string> arrt_prj ;
arrt_prj["Name"] = "Xian 1980 3 Degree GK CM 103E.prj";
arrt_prj["Path"] = "Xian 1980 3 Degree GK CM 104E.prj";
AddNode_Attribute_EX(XML_PATH,"MyTask","PrjFile","TaskName","taskfour",arrt_prj);
map<string , string> arrt_dd ;
arrt_dd["Name"] = "dd1";
arrt_dd["Path"] = "dd1";
AddNode_Attribute_EX(XML_PATH,"MyTask","DataDictionary","TaskName","taskfour",arrt_dd);
arrt_dd["Name"] = "dd2";
arrt_dd["Path"] = "dd2";
AddNode_Attribute_EX(XML_PATH,"MyTask","DataDictionary","TaskName","taskfour",arrt_dd);
//new_xml();
*/
vector<string> task_name_list;
vector<string> task_auther_list;
vector<string> task_date_list;
//TiXmlDocument* doc = open_task( XML_PATH );
//
/*
TiXmlElement* new_task_node = NULL;
map<string , string> arrt ;
arrt["TaskName"] = ANSIToUTF8("taskfour");
arrt["TaskAuthor"] = ANSIToUTF8("王二小");
arrt["TaskDate"] = "2015-07-10 17:37";
arrt["DataDictionaryCount"] = "3";
arrt["ShapeFile"] = "";
arrt["TIFF"] = "";
//add_new_task( doc , arrt , new_task_node );
new_task_node = add_sub_attribute( doc->RootElement() , "MyTask" , arrt );
map<string , string> prj_arrt ;
prj_arrt["Name"] = "Beijing 1954 3 Degree GK CM 102E.prj";
prj_arrt["Path"] = "Beijing 1954 3 Degree GK CM 102E.prj";
add_sub_attribute( new_task_node , "ProjFile" , prj_arrt );
map<string , string> dd_arrt ;
dd_arrt["Name"] = ANSIToUTF8( "标準點一" );
dd_arrt["Path"] = ANSIToUTF8( "132479标準點一");
add_sub_attribute( new_task_node , "DataDictionary" , dd_arrt );
modify_task_count( doc , 1 , true );*/
/*
TiXmlElement* rootElement = doc->RootElement(); //Class
TiXmlElement *ChildElement = rootElement->FirstChildElement();
while ( ChildElement )
{
const char* attr_name = ChildElement->Attribute("TaskName");
printf( "%s\n " , UTF8ToANSI( attr_name ) );
TiXmlElement* prjEle = ChildElement->FirstChildElement("PrjFile");
const char* prj_name = prjEle->Attribute("Name");
printf( "%s\n " , UTF8ToANSI( prj_name ) );
TiXmlElement* ddEle = ChildElement->FirstChildElement("DataDictionary");
while ( ddEle )
{
const char* dd_name = ddEle->Attribute("Name");
printf( "%s\n " , UTF8ToANSI( dd_name ) );
ddEle = ddEle->NextSiblingElement();
}
ChildElement = ChildElement->NextSiblingElement();
printf("\n\n");
}*/
//close_task(doc);
TiXmlDocument* des_doc = open_task( XML_PATH );
TiXmlDocument* src_doc = open_task( XML_SRC_PATH );
TiXmlElement* return_node = NULL;
get_node_by_name_date( des_doc->RootElement() , "taskthree" , "2015-07-07 17:52" , return_node );
//import_task( des_doc , src_doc );
//close_task( des_doc );
//close_task( src_doc );
return 0;
}
void WrittingXML(TiXmlString & xmlFile)
{
TiXmlDeclaration * xmlDec = new TiXmlDeclaration("1.0", "UTF-8", "yes");
TiXmlDocument * xmlDocs = new TiXmlDocument();
xmlDocs->LinkEndChild(xmlDec);
TiXmlElement * element = new TiXmlElement("Document");
xmlDocs->LinkEndChild(element);
/*TiXmlComment * comment = new TiXmlComment(" This is a list of new books ");
element->LinkEndChild(comment); */
TiXmlElement * book = new TiXmlElement("Book");
book->SetAttribute("Name", "How to use TinyXML");
element->LinkEndChild(book);
TiXmlElement * author = new TiXmlElement("Author");
TiXmlText * Authortext = new TiXmlText("Leezhm");
author->LinkEndChild(Authortext);
book->LinkEndChild(author);
TiXmlElement * date = new TiXmlElement("Date");
TiXmlText * Datetext = new TiXmlText("2009-3-30");
date->LinkEndChild(Datetext);
book->LinkEndChild(date);
xmlDocs->SaveFile(xmlFile.c_str());
delete xmlDocs;
}
代碼下載下傳:
http://download.csdn.net/detail/wb175208/9824351