XML转Excel或Excel转XML|tinyxml简单使用|C++使用excel

最近做了一个小工具，可以将XML和Excel之前互转。

里面用到的XML读写库是tinyxml，在Excel2010上运行，请先确保装了Excel，而不是WPS。

代码写的比较挫，一大坨，最近忙也懒得去做优化了。

github地址：XML与Excel互转工具

目前只支持ANSI格式的Excel文件与ANSI格式的XML文件互转。由于在写的时候，里面的存储方式都是CString，默认为ANSI格式，所以哪怕里面把文字转成了UTF8，再保存到CString中也还是被认为是ANSI，这时候就会出现乱码，接下来如果有时间我会把这个问题修复。

直接讲讲代码吧。

读写xml，调用的是tinyxml的接口，核心部分代码都在这下面了，比较挫，分享给大家，希望有帮助。

/*分表和总表模式XML转Excel*/
void CReadXlsDlg::OnBnClickedButton3()
{
	// TODO:  在此添加控件通知处理程序代码
	// TODO:  在此添加控件通知处理程序代码
	CString strInputFile;
	CString strOutputPath;
	strInputFile.Empty();
	strOutputPath.Empty();
	m_editInputPath.GetWindowTextW(strInputFile);
	m_editOutputPath.GetWindowTextW(strOutputPath);

	//strInputFile = "C:\\Users\\linzhaolun.allen\\Desktop\\a.xml";
	//strOutputPath = "C:\\Users\\linzhaolun.allen\\Desktop\\b.xls";
	if (0 == strInputFile.GetLength())
	{
		MessageBox(_T("请先选择需要读取的文件"), _T("错误"), MB_OK);
		return;
	}
	if (0 == strOutputPath.GetLength())
	{
		MessageBox(_T("请先选择输出路径"), _T("错误"), MB_OK);
		return;
	}

	vector> vecSheet;
	CSheetSize SheetSize;
	TiXmlDocument *doc = new TiXmlDocument(__CString2Constchar(strInputFile));
	if (!doc->LoadFile(TIXML_ENCODING_UTF8))  //判断XML文件是否加载成功
	{
		MessageBox(_T("无法打开该文件"), _T("错误"), MB_OK);
		return;
	}

	//doc->Parse(xmlParament,0,TIXML_ENCODING_UTF8);
    //目前仅支持合表模式xml的解析
	int BoHaveTitle = false;
	TiXmlElement* RootLayersNestedElement = doc->RootElement();
	if (NULL == RootLayersNestedElement) //判断文件是否有内容
	{
		MessageBox(_T("没有root element"), _T("错误"), MB_OK);
		return;
	}
	//cout << doc->Value() << endl;
	m_stroutputName = RootLayersNestedElement->Value();       //每个xml的root保存为文件名
	//cout << m_stroutputName << endl;
	m_mapSheetList.erase(m_mapSheetList.begin(), m_mapSheetList.end()); //注意使用map前对其进行清空
	m_mapSheetSize.erase(m_mapSheetSize.begin(), m_mapSheetSize.end());
	m_vecSheetName.clear();
	TiXmlElement* TwoLayersNestedElement = RootLayersNestedElement->FirstChildElement();   //第二层嵌套
	int nSheetCount =0;

	for (; TwoLayersNestedElement != NULL; TwoLayersNestedElement = TwoLayersNestedElement->NextSiblingElement()) 
	{  //每一层循环代表一个sheet

		CString strSheetName;
		CString strSpecialSheetPrefix("xxxxx");
		CString strList("List");
		//CString strConnectSheetAndAtti("yyyyy");
		vector sub_vecSheetName;  
		vector::iterator it;
		map sub_mapSheetList;
		strSheetName = TwoLayersNestedElement->Value();//获取sheet名
		//cout << strSheetName << endl;
		TiXmlElement* ThreeLayersNestedElement = TwoLayersNestedElement->FirstChildElement();  //第三层嵌套 
		if (TwoLayersNestedElement->FirstAttribute())
		{
			strSheetName = strSpecialSheetPrefix + strSheetName + strList;
			ThreeLayersNestedElement = TwoLayersNestedElement;
		}
		if (TwoLayersNestedElement->Value() != ThreeLayersNestedElement->Value())
		{
			//CString tempStr(ThreeLayersNestedElement->Value());
			//strSheetName = strSheetName + strConnectSheetAndAtti + tempStr;
			//MessageBox(_T("item和list之间命名规范错误！list名=item名+“list"), _T("错误"), MB_OK);
			//return;
		}
		for (; ThreeLayersNestedElement != NULL; ThreeLayersNestedElement = ThreeLayersNestedElement->NextSiblingElement())
		{	
			if (ThreeLayersNestedElement->FirstChildElement() && ThreeLayersNestedElement->FirstChildElement()->FirstChildElement())
			{
				TiXmlElement* FourLayersNestedElement = ThreeLayersNestedElement->FirstChildElement();  //第四层嵌套，相当于分表的Excel总表的展开，每一个为一个新的sheet，这个sheet的第一列，包含总是包含第三层的ID号作为索引
				  //第五层嵌套，新的sheet里面的每一项

				for (; FourLayersNestedElement != NULL; FourLayersNestedElement = FourLayersNestedElement->NextSiblingElement())//每一个循环意味着创建一个新的分表
				{
					CExcelSheet asheet;
					asheet.BoHaveTitle = false;
					asheet.strSheetName = FourLayersNestedElement->Value();//获取sheet名
					/*在vec中已经存在该sheet名，也就是之前已经有分表出现过了，此时要做的是把获得的数据push到之前的表内*/
					it = find(sub_vecSheetName.begin(), sub_vecSheetName.end(), asheet.strSheetName);
					if (it != sub_vecSheetName.end())
					{
						asheet = sub_mapSheetList[asheet.strSheetName];
					}
					vector vecSubRow, vecSubTitle;	
					vecSubTitle.push_back(__Constchar2CString(ConvertUtf8ToAnsi(ThreeLayersNestedElement->FirstAttribute()->Name())));
					vecSubRow.push_back(__Constchar2CString(ConvertUtf8ToAnsi(ThreeLayersNestedElement->FirstAttribute()->Value())));
					TiXmlElement* FiveLayersNestedElement = FourLayersNestedElement->FirstChildElement();
					for (; FiveLayersNestedElement != NULL; FiveLayersNestedElement = FiveLayersNestedElement->NextSiblingElement())
					{
						TiXmlAttribute* attributeOfFivelayers = FiveLayersNestedElement->FirstAttribute();  //获得属性 
						for (; attributeOfFivelayers != NULL; attributeOfFivelayers = attributeOfFivelayers->Next())
						{
							vecSubTitle.push_back(__Constchar2CString(ConvertUtf8ToAnsi(attributeOfFivelayers->Name())));
							vecSubRow.push_back(__Constchar2CString(ConvertUtf8ToAnsi(attributeOfFivelayers->Value())));
						}
						if (!asheet.BoHaveTitle){
							asheet.BoHaveTitle = true;
							asheet.vecSheet.push_back(vecSubTitle);
							vecSubTitle.clear();
							asheet.vecSheet.push_back(vecSubTitle);
							//SheetSize.row++;
						}
						asheet.vecSheet.push_back(vecSubRow);
						vecSubRow.clear();
						vecSubRow.push_back(__Constchar2CString(ConvertUtf8ToAnsi(ThreeLayersNestedElement->FirstAttribute()->Value())));
						it = find(sub_vecSheetName.begin(), sub_vecSheetName.end(), asheet.strSheetName);
						if (it == sub_vecSheetName.end())
						{
							sub_vecSheetName.push_back(asheet.strSheetName);
						}
						sub_mapSheetList[asheet.strSheetName] = asheet;			
					}						
				}
			}

			TiXmlAttribute* attributeOfThreelayers = ThreeLayersNestedElement->FirstAttribute();  //获得属性  
		
			vector vecRow, vecTitle;
			//SheetSize.row = SheetSize.col = 0;

			for (; attributeOfThreelayers != NULL; attributeOfThreelayers = attributeOfThreelayers->Next())
			{
				//cout << attributeOfThreelayers->Name() << ":" << attributeOfThreelayers->Value() << endl;

				vecTitle.push_back(__Constchar2CString(ConvertUtf8ToAnsi(attributeOfThreelayers->Name())));
				vecRow.push_back(__Constchar2CString(ConvertUtf8ToAnsi(attributeOfThreelayers->Value())));
				//SheetSize.col++;
			}
			if (!BoHaveTitle){
				BoHaveTitle = true;
				vecSheet.push_back(vecTitle);
				vecTitle.clear();
				vecSheet.push_back(vecTitle);
				//SheetSize.row++;
			}
			vecSheet.push_back(vecRow);
			//SheetSize.row++;
			
		}
		BoHaveTitle = false;
		m_mapSheetList[strSheetName] = vecSheet;
		//m_mapSheetSize[strSheetName] = SheetSize;
		m_vecSheetName.push_back(strSheetName);
		for (int i = 0; i < sub_vecSheetName.size(); i++)
		{
			m_vecSheetName.push_back(sub_vecSheetName[i]);
			m_mapSheetList[sub_vecSheetName[i]] = sub_mapSheetList[sub_vecSheetName[i]].vecSheet;
		}

		nSheetCount++;
		vecSheet.clear();
		sub_mapSheetList.erase(sub_mapSheetList.begin(), sub_mapSheetList.end()); //注意使用map前对其进行清空
		sub_vecSheetName.clear();
		
	}
    
	//将m_mapSheetList内容写入xls文件
	LPDISPATCH lpDisp = NULL;
	if (!m_obExcel.open(__CString2Constchar(strOutputPath)))
	{
		MessageBox(_T("无法打开该文件"), _T("错误"), MB_OK);
		return;
	}

	for (int i = m_vecSheetName.size()-1; i >=0 ; i--)
	{
		
		CString strSheetName = m_vecSheetName[i];
		if (!m_obExcel.addNewSheet(strSheetName))
		{
			MessageBox(_T("无法新建sheet"), _T("错误"), MB_OK);
			return;
		}
		try{
			m_obExcel.useSheet(strSheetName);
		}
		catch(...)
		{
			MessageBox(_T("无法使用指定sheet：")+strSheetName, _T("错误"), MB_OK);
			return;
		}
		
		vector> vecTempSheet;
		vecTempSheet = m_mapSheetList[strSheetName];


		for(int tempRow=0; tempRow < vecTempSheet.size(); tempRow++)
		{

			vector vecTempRow;
			vecTempRow = vecTempSheet[tempRow];
			for(int tempCol=0; tempCol < vecTempRow.size(); tempCol++)
			{
				CString tempCell;
				tempCell = vecTempRow[tempCol];
				try{
					m_obExcel.setCellString(tempRow + 1, tempCol + 1, tempCell);
				}
				catch(...)
				{
					MessageBox(_T("无法使用写入cell，可能是坐标错误"), _T("错误"), MB_OK);
					return;
				}
			}
		}
	}
	m_obExcel.deleteSheet(__Constchar2CString("Sheet1"));
	m_obExcel.deleteSheet(__Constchar2CString("Sheet2"));
	m_obExcel.deleteSheet(__Constchar2CString("Sheet3"));
	m_obExcel.saveAsXLSFile(strOutputPath);  //此时生成的xls内为Ansi格式字符,xls再次转回XML时会被转码成为UTF-8
    m_obExcel.close();


	
}