/// <summary>
///
/// </summary>
/// <param name="table"></param>
/// <param name="columnCNName">key为字段名, ValueTuple<string, int>为字段中文名及列宽度</param>
/// <param name="dicNos"> List<ValueTuple<string, string, string>>item1列名,item2 字典value,item3字典name </param>
/// <returns>返回文件保存的路径</returns>
public static string Export(DataTable table, List <CellOptions> cellOptions, string savePath, string fileName)
{
if (!Directory.Exists(savePath))
{
Directory.CreateDirectory(savePath);
}
//获取所有有值的数据源
var dicNoKeys = cellOptions
.Where(x => !string.IsNullOrEmpty(x.DropNo) && x.KeyValues != null && x.KeyValues.Keys.Count > 0)
.Select(x => new { x.DropNo, x.ColumnName }).Distinct().ToList();
using (ExcelPackage package = new ExcelPackage())
{
var worksheet = package.Workbook.Worksheets.Add("sheet1");
for (int i = 0; i < table.Columns.Count; i++)
{
using (ExcelRange range = worksheet.Cells[1, i + 1])
{
worksheet.Cells[1, i + 1].Style.Fill.PatternType = ExcelFillStyle.Solid;
worksheet.Cells[1, i + 1].Style.Fill.BackgroundColor.SetColor(Color.Gray); //背景色
worksheet.Cells[1, i + 1].Style.Font.Color.SetColor(Color.White);
}
CellOptions options = cellOptions.Where(x => x.ColumnName == table.Columns[i].ColumnName).FirstOrDefault();
if (options != null)
{
worksheet.Column(i + 1).Width = options.ColumnWidth / 6.00;
worksheet.Cells[1, i + 1].Value = options.ColumnCNName;
}
else
{
worksheet.Column(i + 1).Width = 15;
worksheet.Cells[1, i + 1].Value = table.Columns[i].ColumnName;
}
}
for (int i = 0; i < table.Rows.Count; i++)
{
for (int j = 0; j < table.Columns.Count; j++)
{
string cellValue = (table.Rows[i][j] ?? "").ToString();
if (dicNoKeys.Exists(x => x.ColumnName == table.Columns[j].ColumnName))
{
cellOptions.Where(x => x.ColumnName == table.Columns[j].ColumnName)
.Select(s => s.KeyValues)
.FirstOrDefault()
.TryGetValue(cellValue, out string result);
cellValue = result ?? cellValue;
}
worksheet.Cells[i + 2, j + 1].Value = cellValue;
}
}
package.SaveAs(new FileInfo(savePath + fileName));
}
return(savePath + fileName);
}
/// <summary>
/// 导入模板(仅限框架导出模板使用)(202.05.07)
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="path"></param>
/// <param name="exportColumns">指定导出的列</param>
/// <param name="ignoreColumns">忽略不导出的列(如果设置了exportColumns,ignoreColumns不会生效)</param>
/// <returns></returns>
public static WebResponseContent ReadToDataTable <T>(string path, Expression <Func <T, object> > exportColumns = null, List <string> ignoreTemplate = null)
{
WebResponseContent responseContent = new WebResponseContent();
FileInfo file = new FileInfo(path);
if (!file.Exists)
{
return(responseContent.Error("未找到上传的文件,请重新上传"));
}
List <T> entities = new List <T>();
using (ExcelPackage package = new ExcelPackage(file))
{
if (package.Workbook.Worksheets.Count == 0 ||
package.Workbook.Worksheets.FirstOrDefault().Dimension.End.Row <= 1)
{
return(responseContent.Error("未导入数据"));
}
List <CellOptions> cellOptions = GetExportColumnInfo(typeof(T).GetEntityTableName(), false, false);
//设置忽略的列
if (exportColumns != null)
{
cellOptions = cellOptions
.Where(x => exportColumns.GetExpressionToArray().Select(s => s.ToLower()).Contains(x.ColumnName.ToLower()))
.ToList();
}
else if (ignoreTemplate != null)
{
cellOptions = cellOptions
.Where(x => !ignoreTemplate.Select(s => s.ToLower()).Contains(x.ColumnName.ToLower()))
.ToList();
}
ExcelWorksheet sheetFirst = package.Workbook.Worksheets.FirstOrDefault();
for (int j = sheetFirst.Dimension.Start.Column, k = sheetFirst.Dimension.End.Column; j <= k; j++)
{
string columnCNName = sheetFirst.Cells[1, j].Value?.ToString()?.Trim();
if (!string.IsNullOrEmpty(columnCNName))
{
CellOptions options = cellOptions.Where(x => x.ColumnCNName == columnCNName).FirstOrDefault();
if (options == null)
{
return(responseContent.Error("导入文件列[" + columnCNName + "]不是模板中的列"));
}
if (options.Index > 0)
{
return(responseContent.Error("导入文件列[" + columnCNName + "]不能重复"));
}
options.Index = j;
}
}
if (cellOptions.Exists(x => x.Index == 0))
{
return(responseContent.Error("导入文件列必须与导入模板相同"));
}
PropertyInfo[] propertyInfos = typeof(T).GetProperties()
.Where(x => cellOptions.Select(s => s.ColumnName).Contains(x.Name))
.ToArray();
ExcelWorksheet sheet = package.Workbook.Worksheets.FirstOrDefault();
for (int m = sheet.Dimension.Start.Row + 1, n = sheet.Dimension.End.Row; m <= n; m++)
{
T entity = Activator.CreateInstance <T>();
for (int j = sheet.Dimension.Start.Column, k = sheet.Dimension.End.Column; j <= k; j++)
{
string value = sheet.Cells[m, j].Value?.ToString();
CellOptions options = cellOptions.Where(x => x.Index == j).FirstOrDefault();
PropertyInfo property = propertyInfos.Where(x => x.Name == options.ColumnName).FirstOrDefault();
if (options.Requierd && string.IsNullOrEmpty(value))
{
return(responseContent.Error($"第{m}行[{options.ColumnCNName}]验证未通过,不能为空。"));
}
//验证字典数据
if (!string.IsNullOrEmpty(options.DropNo))
{
string key = options.KeyValues.Where(x => x.Value == value)
.Select(s => s.Key)
.FirstOrDefault();
if (key == null)//&& options.Requierd
{
//小于20个字典项，直接提示所有可选value
string values = options.KeyValues.Count < 20 ? (string.Join(',', options.KeyValues.Select(s => s.Value))) : options.ColumnCNName;
return(responseContent.Error($"第{m}行[{options.ColumnCNName}]验证未通过,必须是字典数据中[{values}]的值。"));
}
//将值设置为数据字典的Key,如果导入为是/否字典项，存在表中应该对为1/0
value = key;
}
//验证导入与实体数据类型是否相同
(bool, string, object)result = property.ValidationProperty(value, options.Requierd);
if (!result.Item1)
{
return(responseContent.Error($"第{m}行[{options.ColumnCNName}]验证未通过,{result.Item2}"));
}
property.SetValue(entity, value.ChangeType(property.PropertyType));
}
entity.SetCreateDefaultVal();
entities.Add(entity);
}
}
return(responseContent.OK(null, entities));
}
/// <summary>
/// 导出excel文件(导入功能里的导出模板也使用的此功能，list传的null，导出的文件只有模板的标题)
/// (202.05.07)
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="list">导出的对象</param>
/// <param name="exportColumns">指定导出的列</param>
/// <param name="ignoreColumns">忽略不导出的列(如果设置了exportColumns,ignoreColumns不会生效)</param>
/// <param name="savePath">保存路径</param>
/// <param name="fileName">保存的文件名</param>
/// <param name="template">是否为下载模板</param>
/// <returns></returns>
public static string Export <T>(List <T> list, IEnumerable <string> exportColumns, IEnumerable <string> ignoreColumns, string savePath, string fileName, bool template = false)
{
if (!Directory.Exists(savePath))
{
Directory.CreateDirectory(savePath);
}
//获取代码生成器对应的配置信息
// List<CellOptions> cellOptions = GetExportColumnInfo(typeof(T).GetEntityTableName(), template);
//2020.06.02修复使用表别名时读取不到配置信息
List <CellOptions> cellOptions = GetExportColumnInfo(typeof(T).Name, template);
string fullPath = savePath + fileName;
//获取所有有值的数据源
var dicNoKeys = cellOptions
.Where(x => !string.IsNullOrEmpty(x.DropNo) && x.KeyValues != null && x.KeyValues.Keys.Count > 0)
.Select(x => new { x.DropNo, x.ColumnName }).Distinct().ToList();
List <PropertyInfo> propertyInfo = null;
/*导出时，代码生成器中的表配置信息Sys_TableInfo/Sys_TableColumn必须与当前数据库相同，否则导出来可能没有数据*/
//2020.06.02优化读取导出列配置信息
//导出指定的列
//如果指定了导出的标题列，忽略的标题列不再起作用
if (exportColumns != null && exportColumns.Count() > 0)
{
propertyInfo =
typeof(T).GetProperties()
.Where(x => exportColumns.Select(g => g.ToLower()).Contains(x.Name.ToLower())).ToList();
//.Where(x => cellOptions.Select(s => s.ColumnName) //获取代码生成器配置的列
//.Contains(x.Name)).ToList();
}
else if (ignoreColumns != null && ignoreColumns.Count() > 0)
{
propertyInfo = typeof(T).GetProperties()
.Where(x => !ignoreColumns.Select(g => g.ToLower()).Contains(x.Name.ToLower()))
.Where(x => cellOptions.Select(s => s.ColumnName).Contains(x.Name)) //获取代码生成器配置的列
.ToList();
}
else
{
//默认导出代码生成器中配置【是否显示】=是的列
propertyInfo = typeof(T).GetProperties()
.Where(x => cellOptions.Select(s => s.ColumnName).Contains(x.Name)) //获取代码生成器配置的列
.ToList();
/*
* 如果propertyInfo查出来的长度=0
* 1、代码生成器中的配置信息是否同步到当前数据库
* 2、代码生成器中的配置列名与model的字段是否大小写一致
*/
}
string[] dateArr = null;
if (!template)
{
dateArr = propertyInfo.Where(x => x.PropertyType == typeof(DateTime) ||
x.PropertyType == typeof(DateTime?))
.Select(s => s.Name).ToArray();
}
using (ExcelPackage package = new ExcelPackage())
{
var worksheet = package.Workbook.Worksheets.Add("sheet1");
for (int i = 0; i < propertyInfo.Count; i++)
{
string columnName = propertyInfo[i].Name;
using (ExcelRange range = worksheet.Cells[1, i + 1])
{
worksheet.Cells[1, i + 1].Style.Fill.PatternType = ExcelFillStyle.Solid;
//默认灰色背景，白色字体
Color backgroundColor = Color.Gray;
//字体颜色
Color fontColor = Color.White;
//下载模板并且是必填项，将表格设置为黄色
if (template)
{
fontColor = Color.Black;
if (cellOptions.Exists(x => x.ColumnName == columnName && x.Requierd))
{
backgroundColor = Color.Yellow; //黄色必填
}
else
{
backgroundColor = Color.White;
}
}
worksheet.Cells[1, i + 1].Style.Fill.BackgroundColor.SetColor(backgroundColor); //背景色
worksheet.Cells[1, i + 1].Style.Font.Color.SetColor(fontColor); //字体颜色
}
CellOptions options = cellOptions.Where(x => x.ColumnName == columnName).FirstOrDefault();
if (options != null)
{
worksheet.Column(i + 1).Width = options.ColumnWidth / 6.00;
worksheet.Cells[1, i + 1].Value = options.ColumnCNName;
}
else
{
worksheet.Column(i + 1).Width = 15;
worksheet.Cells[1, i + 1].Value = columnName;
}
}
//下载模板直接返回
if (template)
{
package.SaveAs(new FileInfo(fullPath));
return(fullPath);
}
for (int i = 0; i < list.Count; i++)
{
for (int j = 0; j < propertyInfo.Count; j++)
{
string cellValue = null;
if (dateArr != null && dateArr.Contains(propertyInfo[j].Name))
{
object value = propertyInfo[j].GetValue(list[i]);
cellValue = value == null ? "" : ((DateTime)value).ToString("yyyy-MM-dd HH:mm:sss").Replace(" 00:00:00", "");
}
else
{
cellValue = (propertyInfo[j].GetValue(list[i]) ?? "").ToString();
}
if (dicNoKeys.Exists(x => x.ColumnName == propertyInfo[j].Name))
{
cellOptions.Where(x => x.ColumnName == propertyInfo[j].Name)
.Select(s => s.KeyValues)
.FirstOrDefault()
.TryGetValue(cellValue, out string result);
cellValue = result ?? cellValue;
}
worksheet.Cells[i + 2, j + 1].Value = cellValue;
}
}
package.SaveAs(new FileInfo(fullPath));
}
return(fullPath);
}