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反射+属性标签 通用Excel导入导
在做通用导入导出的时候，最关键的应该就是实体导出导入的顺序了，但是编译器在编译的时候又无法自定义属性编译的顺序，所以需要一个自定义的特性标签来指定实体类导出的顺序，然后通过自定义的比较器将属性排序
因为wcf中无法对实体类的自定义特性进行描述，所以获取不到我们自定义的OrderAttribute，虽然DataMemberAttribute中的Order属性是描述属性序列化的顺序，但是因为没有对序列化排序没有特殊的要求，于是就用它代替了，起初发射之后总是倒数两个Order属性的值是正常的，其他的都为-1，后来发现生成的顺序也是按Order生成的，于是就没有深究了（如果有深入研究的朋友 希望指点一下）。
class Program { static void Main(string[] args) { //过滤掉没有打排序标签的属性 List<PropertyInfo> pis = typeof(People).GetProperties().Where(p => p.GetCustomAttributes(typeof(OrderAttribute), false).Any()).ToList(); //自定义比较器排序 pis.Sort(new OrderComparator()); Console.ReadKey(); } } //自定义排序特性 public class OrderAttribute : Attribute { public OrderAttribute(int order) { this.PropertyOrder = order; } public int PropertyOrder { get; set; } } //实体类 public class People { public int ID { get; set; } [Order(1)] public string Name { get; set; } [Order(3)] public int Age { get; set; } [Order(2)] public bool Gender { get; set; } [Order(5)] public double Height { get; set; } [Order(4)] public double Weight { get; set; } } //自定义属性比较器 public class OrderComparator : IComparer<PropertyInfo> { public int Compare(PropertyInfo x, PropertyInfo y) { OrderAttribute xOrderAttribute = x.GetCustomAttributes(typeof(OrderAttribute), false).FirstOrDefault() as OrderAttribute; OrderAttribute yOrderAttribute = y.GetCustomAttributes(typeof(OrderAttribute), false).FirstOrDefault() as OrderAttribute; return xOrderAttribute.PropertyOrder - yOrderAttribute.PropertyOrder; } }目前使用过操作excel的方式有NPOI和，微软提供的Microsoft.Office.Interop.Excel性能太牛X了，所以就不敢贴出来了
一、使用NPOI
NPOI导出：
/// <summary> /// 保存到硬盘 /// </summary> /// <param name="path">保存路径@"c:\book1.xls"</param> /// <param name="data">数据源</param> /// <param name="columnsName">excel列名</param> public void SaveToFile<T>(List<T> data, string path, List<string> excelColumnsTitle) { if (Path.GetExtension(path).Equals(".xls")) { //excel2003 SaveToFile2003<T>(data, path, excelColumnsTitle); } else if (Path.GetExtension(path).Equals(".xlsx")) { //excel2007 SaveToFile2007<T>(data, path, excelColumnsTitle); } else { throw new Exception("请传入正确的excel路径"); } }SaveToFile2003
/// <summary> /// excel2003导出 /// </summary> private void SaveToFile2003<T>(List<T> data, string path, List<string> excelColumnsTitle) { NPOI.HSSF.UserModel.HSSFWorkbook book = new NPOI.HSSF.UserModel.HSSFWorkbook(); NPOI.SS.UserModel.ISheet sheet = book.CreateSheet("Sheet"); //添加一个sheet //给sheet1添加第一行的头部标题 NPOI.SS.UserModel.IRow row1 = sheet.CreateRow(0); for (int i = 0; i < excelColumnsTitle.Count; i++) { row1.CreateCell(i).SetCellValue(excelColumnsTitle[i]); } //过滤属性 List<PropertyInfo> pis = typeof(T).GetProperties().Where(p => p.GetCustomAttributes(typeof(OrderAttribute), false).Any()).ToList(); pis.Sort(new OrderComparator());
//金额格式 NPOI.SS.UserModel.ICellStyle cellStyleDecimal = book.CreateCellStyle(); NPOI.SS.UserModel.IDataFormat formatDecimal = book.CreateDataFormat(); cellStyleDecimal.DataFormat = NPOI.HSSF.UserModel.HSSFDataFormat.GetBuiltinFormat("0.00"); //单元格格式为“0.00”来表示,"￥#,##0"美元显示,"0.00%"百分比显示 //日期格式 NPOI.SS.UserModel.ICellStyle cellStyleDateTime = book.CreateCellStyle(); NPOI.SS.UserModel.IDataFormat formatDateTime = book.CreateDataFormat(); cellStyleDateTime.DataFormat = formatDateTime.GetFormat("yyyy-m"); //将数据逐步写入sheet1各个行 for (int i = 0; i < data.Count; i++) { NPOI.SS.UserModel.IRow rowtemp = sheet.CreateRow(i + 1); for (int j = 0; j < pis.Count; j++) { NPOI.SS.UserModel.ICell cell = rowtemp.CreateCell(j); if (pis[j].PropertyType.IsAssignableFrom(typeof(string))) { cell.SetCellValue(pis[j].GetValue(data[i], null).ToString()); } else if (pis[j].PropertyType.IsAssignableFrom(typeof(int))) { cell.SetCellValue(Convert.ToInt32(pis[j].GetValue(data[i], null))); } else if (pis[j].PropertyType.IsAssignableFrom(typeof(decimal))) { cell.CellStyle = cellStyleDecimal; cell.SetCellValue(Convert.ToDouble(pis[j].GetValue(data[i], null))); } else if (pis[j].PropertyType.IsAssignableFrom(typeof(DateTime))) { cell.CellStyle = cellStyleDateTime; cell.SetCellValue(Convert.ToDateTime(pis[j].GetValue(data[i], null))); } else if (pis[j].PropertyType.IsAssignableFrom(typeof(double))) { cell.CellStyle = cellStyleDecimal; cell.SetCellValue(Convert.ToDouble(pis[j].GetValue(data[i], null))); } else if (pis[j].PropertyType.IsAssignableFrom(typeof(bool))) { cell.SetCellValue(Convert.ToBoolean(pis[j].GetValue(data[i], null))); } } } // 写入到客户端 using (FileStream fs = new FileStream(path, FileMode.OpenOrCreate, FileAccess.Write)) { book.Write(fs); } }SaveToFile2007
/// <summary> /// excel2007导出 /// </summary> private void SaveToFile2007<T>(List<T> data, string path, List<string> excelColumnsTitle) { NPOI.XSSF.UserModel.XSSFWorkbook book = new NPOI.XSSF.UserModel.XSSFWorkbook(); NPOI.SS.UserModel.ISheet sheet = book.CreateSheet("Sheet"); //添加一个sheet //给sheet1添加第一行的头部标题 NPOI.SS.UserModel.IRow row1 = sheet.CreateRow(0); for (int i = 0; i < excelColumnsTitle.Count; i++) { row1.CreateCell(i).SetCellValue(excelColumnsTitle[i]); } //过滤属性 List<PropertyInfo> pis = typeof(T).GetProperties().Where(p => p.GetCustomAttributes(typeof(OrderAttribute), false).Any()).ToList();
pis.Sort(new OrderComparator()); //金额格式 NPOI.SS.UserModel.ICellStyle cellStyleDecimal = book.CreateCellStyle(); NPOI.SS.UserModel.IDataFormat formatDecimal = book.CreateDataFormat(); cellStyleDecimal.DataFormat = NPOI.HSSF.UserModel.HSSFDataFormat.GetBuiltinFormat("0.00"); //单元格格式为“0.00”来表示,"￥#,##0"美元显示,"0.00%"百分比显示 //日期格式 NPOI.SS.UserModel.ICellStyle cellStyleDateTime = book.CreateCellStyle(); NPOI.SS.UserModel.IDataFormat formatDateTime = book.CreateDataFormat(); cellStyleDateTime.DataFormat = formatDateTime.GetFormat("yyyy-m"); //将数据逐步写入sheet1各个行 for (int i = 0; i < data.Count; i++) { NPOI.SS.UserModel.IRow rowtemp = sheet.CreateRow(i + 1); for (int j = 0; j < pis.Count; j++) { NPOI.SS.UserModel.ICell cell = rowtemp.CreateCell(j); if (pis[j].PropertyType.IsAssignableFrom(typeof(string))) { cell.SetCellValue(pis[j].GetValue(data[i], null).ToString()); } else if (pis[j].PropertyType.IsAssignableFrom(typeof(int))) { cell.SetCellValue(Convert.ToInt32(pis[j].GetValue(data[i], null))); } else if (pis[j].PropertyType.IsAssignableFrom(typeof(decimal))) { cell.CellStyle = cellStyleDecimal; cell.SetCellValue(Convert.ToDouble(pis[j].GetValue(data[i], null))); } else if (pis[j].PropertyType.IsAssignableFrom(typeof(DateTime))) { cell.CellStyle = cellStyleDateTime; cell.SetCellValue(Convert.ToDateTime(pis[j].GetValue(data[i], null))); } else if (pis[j].PropertyType.IsAssignableFrom(typeof(double))) { cell.CellStyle = cellStyleDecimal; cell.SetCellValue(Convert.ToDouble(pis[j].GetValue(data[i], null))); } else if (pis[j].PropertyType.IsAssignableFrom(typeof(bool))) { cell.SetCellValue(Convert.ToBoolean(pis[j].GetValue(data[i], null))); } } } // 写入到客户端 using (FileStream fs = new FileStream(path, FileMode.OpenOrCreate, FileAccess.Write)) { book.Write(fs); } }NPOI导入：
/// <summary> /// 返回List数据 /// </summary> /// <typeparam name="T">实体类</typeparam> /// <param name="path">excel文件路径</param> /// <returns></returns> public List<T> ImportExcelToList<T>(string path) { if (Path.GetExtension(path).Equals(".xls")) { //excel2003 return ImportExcelToList2003<T>(path); } else if (Path.GetExtension(path).Equals(".xlsx")) { //excel2007 return ImportExcelToList2007<T>(path); } else { throw new Exception("请传入正确的excel路径"); } }ImportExcelToList2003
/// <summary> /// excel2003导入 /// </summary> private List<T> ImportExcelToList2003<T>(string path) { List<T> list = new List<T>(); NPOI.HSSF.UserModel.HSSFWorkbook book = new NPOI.HSSF.UserModel.HSSFWorkbook(new FileStream(path, FileMode.Open, FileAccess.Read)); NPOI.HSSF.UserModel.HSSFSheet sheet = book.GetSheet("Sheet") as NPOI.HSSF.UserModel.HSSFSheet; if (sheet != null) { List<PropertyInfo> pis = typeof(T).GetProperties().Where(p => p.GetCustomAttributes(typeof(OrderAttribute), false).Any()).ToList();
pis.Sort(new OrderComparator()); //导入数据 for (int i = 1; i <= sheet.LastRowNum; i++) //获得所有行数 { T model = Activator.CreateInstance<T>(); NPOI.SS.UserModel.IRow row = sheet.GetRow(i); //读取当前行数据 if (row != null) { try { for (int j = 0; j < row.Cells.Count; j++) { if (pis[j].PropertyType.IsAssignableFrom(typeof(string))) { pis[j].SetValue(model, row.GetCell(j).StringCellValue, null); } else if (pis[j].PropertyType.IsAssignableFrom(typeof(int))) { pis[j].SetValue(model, (int)row.GetCell(j).NumericCellValue, null); } else if (pis[j].PropertyType.IsAssignableFrom(typeof(decimal))) { pis[j].SetValue(model, (decimal)row.GetCell(j).NumericCellValue, null); } else if (pis[j].PropertyType.IsAssignableFrom(typeof(DateTime))) { pis[j].SetValue(model, row.GetCell(j).DateCellValue, null); } else if (pis[j].PropertyType.IsAssignableFrom(typeof(double))) { pis[j].SetValue(model, row.GetCell(j).NumericCellValue, null); } else if (pis[j].PropertyType.IsAssignableFrom(typeof(bool))) { pis[j].SetValue(model, row.GetCell(j).BooleanCellValue, null); } } list.Add(model); } catch { } } } } return list; }ImportExcelToList2007
/// <summary> /// excel2007导入 /// </summary> private List<T> ImportExcelToList2007<T>(string path) { List<T> list = new List<T>(); NPOI.XSSF.UserModel.XSSFWorkbook book = new NPOI.XSSF.UserModel.XSSFWorkbook(new FileStream(path, FileMode.Open, FileAccess.Read)); NPOI.SS.UserModel.ISheet sheet = book.GetSheetAt(0); if (sheet != null) { List<PropertyInfo> pis = typeof(T).GetProperties().Where(p => p.GetCustomAttributes(typeof(OrderAttribute), false).Any()).ToList();
pis.Sort(new OrderComparator()); //导入数据 for (int i = 1; i <= sheet.LastRowNum; i++) //获得所有行数 { T model = Activator.CreateInstance<T>(); NPOI.SS.UserModel.IRow row = sheet.GetRow(i); //读取当前行数据 if (row != null) { try { for (int j = 0; j < row.Cells.Count; j++) { if (pis[j].PropertyType.IsAssignableFrom(typeof(string))) { pis[j].SetValue(model, row.GetCell(j).StringCellValue, null); } else if (pis[j].PropertyType.IsAssignableFrom(typeof(int))) { pis[j].SetValue(model, (int)row.GetCell(j).NumericCellValue, null); } else if (pis[j].PropertyType.IsAssignableFrom(typeof(decimal))) { pis[j].SetValue(model, (decimal)row.GetCell(j).NumericCellValue, null); } else if (pis[j].PropertyType.IsAssignableFrom(typeof(DateTime))) { pis[j].SetValue(model, row.GetCell(j).DateCellValue, null); } else if (pis[j].PropertyType.IsAssignableFrom(typeof(double))) { pis[j].SetValue(model, row.GetCell(j).NumericCellValue, null); } else if (pis[j].PropertyType.IsAssignableFrom(typeof(bool))) { pis[j].SetValue(model, row.GetCell(j).BooleanCellValue, null); } } list.Add(model); } catch { } } } } return list; }
二、使用Acey.ExcelX，以前的时候性能是忧于NPOI的，而且支持excel03和07，相较NPOI有时候还能省去cell类型的判断，只是是第三方收费的，所以导出后会有广告
Acey.ExcelX导出
/// <summary> /// 保存到硬盘 /// </summary> /// <param name="path">保存路径@"c:\book1.xls"</param> /// <param name="data">数据源</param> /// <param name="columnsName">excel列名</param> public void SaveToFile<T>(List<T> data, string path, List<string> excelColumnsTitle) { IWorkbook workbook = ExcelxApplication.CreateWorkbook(); IWorksheet worksheet = workbook.Worksheets[0]; for (int i = 0; i < excelColumnsTitle.Count; i++) { worksheet.Cells[0, i].Value = http://www.mamicode.com/excelColumnsTitle[i];>Acey.ExcelX导入
/// <summary> /// 返回List数据 /// </summary> /// <typeparam name="T">实体类</typeparam> /// <param name="path">excel文件路径</param> /// <returns></returns> public List<T> ImportExcelToList<T>(string path) { List<T> list = new List<T>(); Type type = typeof(T); //创建Workbook对象通过打开指定的Excel文档。 IWorkbook workbook = ExcelxApplication.Open(path); //获取以0为基数的Worksheet对象。 IWorksheet worksheet = workbook.Worksheets[0]; //获取工作表中最大数据行。 int maxRow = worksheet.MaxDataRow; //获取工作表中最大数据列。 int maxCol = worksheet.MaxDataColumn; //创建指定区域的对象。 IRange range = worksheet.Cells.CreateRange(0, 0, maxRow, maxCol); //将该区域对象的数据导出到DataTable对象中。 DataTable table = range.ExportDataTable(); //返回该DataTable对象。 for (int row = 1; row <= maxRow; row++) { T model = Activator.CreateInstance<T>(); List<PropertyInfo> pis = typeof(T).GetProperties().Where(p => p.GetCustomAttributes(typeof(OrderAttribute), false).Any()).ToList(); pis.Sort(new OrderComparator()); for (int col = 0; col <= maxCol; col++) { ICell cell = worksheet.Cells[row, col]; if (pis[col].PropertyType.IsAssignableFrom(typeof(string))) { pis[col].SetValue(model, Convert.ToString(cell.Value), null); } else if (pis[col].PropertyType.IsAssignableFrom(typeof(int))) { pis[col].SetValue(model, Convert.ToInt32(cell.Value), null); } else if (pis[col].PropertyType.IsAssignableFrom(typeof(decimal))) { pis[col].SetValue(model, Convert.ToDecimal(cell.Value), null); } else if (pis[col].PropertyType.IsAssignableFrom(typeof(DateTime))) { pis[col].SetValue(model, Convert.ToDateTime(cell.Value), null); } else if (pis[col].PropertyType.IsAssignableFrom(typeof(double))) { pis[col].SetValue(model, Convert.ToDouble(cell.Value), null); } else if (pis[col].PropertyType.IsAssignableFrom(typeof(bool))) { pis[col].SetValue(model, Convert.ToBoolean(cell.Value), null); } } list.Add(model); } return list; }Acey.ExcelX输出到web
/// <summary> ///输出到网页 ///</summary> ///<param name="context">HttpContext</param> ///<param name="fileName">"book1.xls"</param> ///<param name="data">数据源</param> public static void RenderToBrowser(DataTable data, HttpContext context, string fileName) { IWorkbook workbook = ProcessWorkBook(data); workbook.SaveToHttpResponse(context.Response, fileName, false);//输出到网页 }
反射+属性标签 通用Excel导入导
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