利用Aspose.Cells实现万能导出

最近做了个项目,客户对导出excel功能情有独钟,几乎要求每一个列表数据都支持导出excel功能,为了避免代码重复,万能粉嫩的小码农开发了万能导出QAQ.
导出Excel无非就是取出数据,然后利用Aspose.Cells插件填充到Excel文件中,DataTable类型的数据是最适合填充Excel不过了.唯一的问题就是DataTable数据的列头一般是英文,突然就想出了利用SQL Server每一列的说明来替换掉英文列头的方法,我太TM机智了.

        /// <summary>
        /// 导出
        /// </summary>
        /// <param name="dt">导出的数据表</param>
        /// <param name="dic">字段名称,字段中文名称</param>
        /// <param name="title">导出第一行标题</param>
        /// <returns></returns>
        public Workbook ExportData(DataTable table, Dictionary<string, string> dic, string title = "")
        {
            title = string.IsNullOrEmpty(title) ? "导出数据" : title;

            Workbook workbook = new Workbook();
            workbook.Worksheets.RemoveAt(0);//移除第一个sheet

            var tempStrArray = System.Activator.CreateInstance<T>().GetType().FullName.Split('.');//
            string tableName = tempStrArray[tempStrArray.Count() - 1];//这两句是反射生成要操作的表格名称的,
            var baseDic = GetColumnsByTable(tableName, "");

            foreach (DataColumn item in table.Columns)
            {
                string chsColumnName = "";
                if (baseDic.TryGetValue(item.ColumnName, out chsColumnName) && !string.IsNullOrEmpty(chsColumnName))
                    item.ColumnName = chsColumnName;
                if (dic.TryGetValue(item.ColumnName, out chsColumnName) && !string.IsNullOrEmpty(chsColumnName))
                    item.ColumnName = chsColumnName;
            }

            int Colnum = table.Columns.Count;//表格列数
            int Rownum = table.Rows.Count;//表格行数

            Worksheet sheet = workbook.Worksheets.Add(title);
            Cells cells = sheet.Cells;//单元格

            //为标题设置样式
            Style styleTitle = workbook.Styles[workbook.Styles.Add()];//新增样式
            styleTitle.HorizontalAlignment = TextAlignmentType.Center;//文字居中
            styleTitle.Font.Name = "宋体";//文字字体
            styleTitle.Font.Size = 18;//文字大小
            styleTitle.Font.IsBold = true;//粗体

            //样式2
            Style style2 = workbook.Styles[workbook.Styles.Add()];//新增样式
            style2.HorizontalAlignment = TextAlignmentType.Center;//文字居中
            style2.Font.Name = "宋体";//文字字体
            style2.Font.Size = 13;//文字大小
            style2.Font.IsBold = true;//粗体
            style2.IsTextWrapped = true;//单元格内容自动换行
            style2.Borders[BorderType.LeftBorder].LineStyle = CellBorderType.Thin;
            style2.Borders[BorderType.RightBorder].LineStyle = CellBorderType.Thin;
            style2.Borders[BorderType.TopBorder].LineStyle = CellBorderType.Thin;
            style2.Borders[BorderType.BottomBorder].LineStyle = CellBorderType.Thin;

            //样式3
            Style style3 = workbook.Styles[workbook.Styles.Add()];//新增样式
            style3.HorizontalAlignment = TextAlignmentType.Center;//文字居中
            style3.Font.Name = "宋体";//文字字体
            style3.Font.Size = 12;//文字大小
            style3.Borders[BorderType.LeftBorder].LineStyle = CellBorderType.Thin;
            style3.Borders[BorderType.RightBorder].LineStyle = CellBorderType.Thin;
            style3.Borders[BorderType.TopBorder].LineStyle = CellBorderType.Thin;
            style3.Borders[BorderType.BottomBorder].LineStyle = CellBorderType.Thin;

            //生成行1 标题行
            cells.Merge(0, 0, 1, Colnum);//合并单元格
            cells[0, 0].PutValue(title);//填写内容
            cells[0, 0].SetStyle(styleTitle);
            cells.SetRowHeight(0, 38);

            //生成行2 列名行
            for (int i = 0; i < Colnum; i++)
            {
                cells[1, i].PutValue(table.Columns[i].ColumnName);
                cells[1, i].SetStyle(style2);
                cells.SetRowHeight(1, 25);
                cells.SetColumnWidth(i, 30);
            }

            //生成数据行
            for (int i = 0; i < Rownum; i++)
            {
                for (int k = 0; k < Colnum; k++)
                {
                    cells[2 + i, k].PutValue(table.Rows[i][k].ToString());
                    if (k == Colnum - 1)
                    {
                        style3.HorizontalAlignment = TextAlignmentType.Left;//文字居中
                    }
                    else
                    {
                        style3.HorizontalAlignment = TextAlignmentType.Center;//文字居中
                    }
                    cells[2 + i, k].SetStyle(style3);
                }
                cells.SetRowHeight(2 + i, 24);
            }
            return workbook;
        }

        /// <summary>
        /// 获取某个表下面的所有列名和说明
        /// </summary>
        /// <param name="tbname">表名</param>
        /// <param name="orderrule">排序规则</param>
        /// <returns></returns>
        public Dictionary<string, string> GetColumnsByTable(string tbname, string orderrule)
        {
            StringBuilder sqlsb = new StringBuilder();
            sqlsb.Append("SELECT distinct ColumnsName = c.name,Description = isnull(ex.value,'') ");
            sqlsb.Append("FROM sys.columns c LEFT OUTER JOIN sys.extended_properties ex ");
            sqlsb.Append("ON ex.major_id = c.object_id AND ex.minor_id = c.column_id AND ex.name = 'MS_Description' ");
            sqlsb.Append("left outer join systypes t on c.system_type_id=t.xtype ");
            sqlsb.Append("WHERE OBJECTPROPERTY(c.object_id, 'IsMsShipped')=0 AND ");
            sqlsb.Append("OBJECT_NAME(c.object_id) ='{0}' ");
            if (!string.IsNullOrEmpty(orderrule))
            {
                sqlsb.Append("order by ColumnsName {1}");
            }
            else
            {
                sqlsb.Append("order by ColumnsName ASC");
            }

            string exsql = string.Format(sqlsb.ToString(), tbname, orderrule);

            DataTable dt = DB.FromSql(exsql).ToTable() as DataTable;//用了MySoft框架QAQ

            Dictionary<string, string> dic = new Dictionary<string, string>();
            if (dt != null && dt.Rows.Count > 0)
            {
                for (int i = 0; i < dt.Rows.Count; i++)
                {
                    dic.Add(dt.Rows[i][0].ToString(), dt.Rows[i][1].ToString());
                }
            }
            return dic;
        }

两个搞定了,能实现绝大部分的导出业务.

转自–残颜的博客