配置xxx.pro
引入Active Qt库
QT += axcontainer
引入objbase.h，解决返回QAxObject为空的问题
1 #include <objbase.h>
2
3 //在需要创建QAxObject()上方调用如下代码
4 CoInitializeEx(NULL, COINIT_MULTITHREADED); 5 m_pExcel = new(std::nothrow) QAxObject();
因为QAxObject默认是在单线程下使用的，因此如果不用上门代码申明多线程, 会导致获取的excel的QAxObject都是NULL
保存或者打开excel的路径需要统一用"\"
用QDir::toNativeSeparators(m_strPath)进行转换m_pWorkbook->dynamicCall("SaveAs(const QString&)", QDir::toNativeSeparators(m_strPath));
SaveAs必须在所有操作结束后调用，否则不会保存到excel中
可以放到close前调用即可
1 m_pWorkbook->dynamicCall("SaveAs(const QString&)", QDir::toNativeSeparators(m_strPath)); 2 m_pWorkbook->dynamicCall("Close()"); 3 m_pExcel->dynamicCall("Quit()"); 4 delete m_pExcel; 5 m_pExcel = NULL;
Demo
1 #ifndef EXCELOPERATOR_H 2 #define EXCELOPERATOR_H
3
4 #include <QObject>
5 #include <ActiveQt/QAxObject>
6 #include <QDebug>
7 #include <QDir>
8
9 class ExcelOperator : public QObject 10 { 11 Q_OBJECT 12 public: 13 explicit ExcelOperator(QObject *parent = nullptr); 14 ~ExcelOperator(); 15 //打开文件
16 bool open(QString path); 17 //关闭文件
18 bool close(); 19 //获取工作表数量
20 int getSheetsCount(); 21 //根据名称创建工作表
22 QAxObject* addSheet(QString name); 23 //根据名称删除工作表
24 bool delSheet(QString name); 25 //根据编号删除工作表
26 bool delSheet(int index); 27 //根据名称获取工作表
28 QAxObject* getSheet(QString name); 29 //根据编号获取工作表
30 QAxObject* getSheet(int index); 31 //获取行对象
32 QAxObject* getRows(QAxObject* pSheet); 33 //获取行数
34 int getRowsCount(QAxObject* pSheet); 35 //获取列对象
36 QAxObject* getColumns(QAxObject* pSheet); 37 //获取列数
38 int getColumnsCount(QAxObject* pSheet); 39 //根据行列值获取单元格值, 如: 3行，5列
40 QString getCell(QAxObject* pSheet, int row, int column); 41 //根据行列编号获取单元格值, 如: "F6"
42 QString getCell(QAxObject* pSheet, QString number); 43 //根据行列值设置单元格值
44 bool setCell(QAxObject* pSheet, int row, int column, QString value); 45 //根据行列编号设置单元格值
46 bool setCell(QAxObject* pSheet, QString number, QString value); 47
48
49 signals: 50
51 public slots: 52 private: 53 QAxObject* m_pExcel; 54 QAxObject* m_pWorksheets; 55 QAxObject* m_pWorkbook; 56 QString m_strPath; 57 }; 58
59 #endif // EXCELOPERATOR_H
1 #include "exceloperator.h"
2 #include <objbase.h>
3
4 ExcelOperator::ExcelOperator(QObject *parent) : QObject(parent) 5 , m_pExcel(NULL) 6 , m_pWorksheets(NULL) 7 , m_pWorkbook(NULL) 8 { 9
10 } 11
12 ExcelOperator::~ExcelOperator() 13 { 14 close(); 15 } 16
17 bool ExcelOperator::open(QString path) 18 { 19 m_strPath = path; 20 QAxObject *pWorkbooks = NULL; 21 CoInitializeEx(NULL, COINIT_MULTITHREADED); 22 m_pExcel = new(std::nothrow) QAxObject(); 23 if (NULL == m_pExcel) { 24 qCritical()<<"创建Excel对象失败..."; 25 return false; 26 } 27 try { 28 m_pExcel->setControl("Excel.Application"); 29 m_pExcel->dynamicCall("SetVisible(bool)", false); //true 表示操作文件时可见，false表示为不可见
30 m_pExcel->setProperty("DisplayAlerts", false); 31 pWorkbooks = m_pExcel->querySubObject("WorkBooks"); 32 pWorkbooks->dynamicCall("Add"); 33 m_pWorkbook = m_pExcel->querySubObject("ActiveWorkBook"); 34 qDebug()<<"excel path: "<<m_strPath; 35
36 // 获取打开的excel文件中所有的工作sheet
37 m_pWorksheets = m_pWorkbook->querySubObject("WorkSheets"); 38 } catch (...) { 39 qCritical()<<"打开文件失败..."; 40 return false; 41 } 42
43 return true; 44 } 45
46 bool ExcelOperator::close() 47 { 48 qDebug()<<"excel close..."; 49 if (m_pExcel) 50 { 51 qDebug()<<"closing..."; 52 m_pWorkbook->dynamicCall("SaveAs(const QString&)", QDir::toNativeSeparators(m_strPath)); 53 m_pWorkbook->dynamicCall("Close()"); 54 m_pExcel->dynamicCall("Quit()"); 55 delete m_pExcel; 56 m_pExcel = NULL; 57 } 58 return true; 59 } 60
61 int ExcelOperator::getSheetsCount() 62 { 63 int count = 0; 64 count = m_pWorksheets->property("Count").toInt(); 65 return count; 66 } 67
68
69 QAxObject* ExcelOperator::addSheet(QString name) 70 { 71 QAxObject *pWorkSheet = NULL; 72 try { 73 int count = m_pWorksheets->property("Count").toInt(); //获取工作表数目
74 QAxObject *pLastSheet = m_pWorksheets->querySubObject("Item(int)", count); 75 pWorkSheet = m_pWorksheets->querySubObject("Add(QVariant)", pLastSheet->asVariant()); 76 pLastSheet->dynamicCall("Move(QVariant)", pWorkSheet->asVariant()); 77 pWorkSheet->setProperty("Name", name); //设置工作表名称
78 } catch (...) { 79 qCritical()<<"创建sheet失败..."; 80 } 81 return pWorkSheet; 82 } 83
84 bool ExcelOperator::delSheet(QString name) 85 { 86 try { 87 QAxObject *pFirstSheet = m_pWorksheets->querySubObject("Item(QString)", name); 88 pFirstSheet->dynamicCall("delete"); 89 } catch (...) { 90 qCritical()<<"删除sheet失败..."; 91 return false; 92 } 93 return true; 94 } 95
96 bool ExcelOperator::delSheet(int index) 97 { 98 try { 99 QAxObject *pFirstSheet = m_pWorksheets->querySubObject("Item(int)", index); 100 pFirstSheet->dynamicCall("delete"); 101 } catch (...) { 102 qCritical()<<"删除sheet失败..."; 103 return false; 104 } 105 return true; 106 } 107
108 QAxObject* ExcelOperator::getSheet(QString name) 109 { 110 QAxObject* pWorkSheet = NULL; 111 try { 112 pWorkSheet = m_pWorksheets->querySubObject("Item(QString)", name); 113 } catch (...) { 114 qCritical()<<"获取sheet失败..."; 115 } 116 return pWorkSheet; 117 } 118
119 QAxObject* ExcelOperator::getSheet(int index) 120 { 121 QAxObject* pWorkSheet = NULL; 122 try { 123 pWorkSheet = m_pWorksheets->querySubObject("Item(int)", index); 124 } catch (...) { 125 qCritical()<<"获取sheet失败..."; 126 } 127 return pWorkSheet; 128 } 129
130 QAxObject* ExcelOperator::getRows(QAxObject* pSheet) 131 { 132 QAxObject* pRows = NULL; 133 try { 134 pRows = pSheet->querySubObject("Rows"); 135 } catch (...) { 136 qCritical()<<"获取行失败..."; 137 } 138 return pRows; 139 } 140
141 int ExcelOperator::getRowsCount(QAxObject* pSheet) 142 { 143 int rows = 0; 144 try { 145 QAxObject* pRows = getRows(pSheet); 146 rows = pRows->property("Count").toInt(); 147 } catch (...) { 148 qCritical()<<"获取行数失败..."; 149 } 150 return rows; 151 } 152
153 QAxObject* ExcelOperator::getColumns(QAxObject* pSheet) 154 { 155 QAxObject* pColumns = NULL; 156 try { 157 pColumns = pSheet->querySubObject("Columns"); 158 } catch (...) { 159 qCritical()<<"获取列失败..."; 160 } 161 return pColumns; 162 } 163
164 int ExcelOperator::getColumnsCount(QAxObject* pSheet) 165 { 166 int columns = 0; 167 try { 168 QAxObject* pColumns = getColumns(pSheet); 169 columns = pColumns->property("Count").toInt(); 170 } catch (...) { 171 qCritical()<<"获取列数失败..."; 172 } 173 return columns; 174 } 175
176 QString ExcelOperator::getCell(QAxObject* pSheet, int row, int column) 177 { 178 QString strCell = ""; 179 try { 180 QAxObject* pCell = pSheet->querySubObject("Cells(int, int)", row, column); 181 strCell = pCell->property("Value").toString(); 182 } catch (...) { 183 qCritical()<<"获取单元格信息失败..."; 184 } 185
186 return strCell; 187 } 188
189 QString ExcelOperator::getCell(QAxObject* pSheet, QString number) 190 { 191 QString strCell = ""; 192 try { 193 QAxObject* pCell = pSheet->querySubObject("Range(QString)", number); 194 strCell = pCell->property("Value").toString(); 195 } catch (...) { 196 qCritical()<<"获取单元格信息失败..."; 197 } 198
199 return strCell; 200 } 201
202 bool ExcelOperator::setCell(QAxObject* pSheet, int row, int column, QString value) 203 { 204 try { 205 QAxObject* pCell = pSheet->querySubObject("Cells(int, int)", row, column); 206 pCell->setProperty("Value", value); 207 } catch (...) { 208 qCritical()<<"写入单元格信息失败..."; 209 return false; 210 } 211 return true; 212 } 213
214 bool ExcelOperator::setCell(QAxObject* pSheet, QString number, QString value) 215 { 216 try { 217 QAxObject* pCell = pSheet->querySubObject("Range(QString)", number); 218 pCell->setProperty("Value", value); 219 } catch (...) { 220 qCritical()<<"写入单元格信息失败..."; 221 return false; 222 } 223 return true; 224 }