/// <summary>
/// 导出表定义。
/// </summary>
/// <param name="tables">表信息</param>
/// <param name="stream">IO流</param>
public void Export(IList<Table> tables, Stream stream)
{
if (tables == null)
{
throw new ArgumentNullException(nameof(tables));
}
if (tables.IsEmpty())
{
throw new ArgumentException("导出的表不能为空！", nameof(tables));
}
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
var workbook = new HSSFWorkbook();
// 标题单元格样式。
var tableCellStyle = workbook.NewCellStyle(fontCallback: font => font.FontHeightInPoints = 18, borderStyle: BorderStyle.None);
var titleCellStyle = workbook.NewCellStyle(
style =>
{
style.FillPattern = FillPattern.SolidForeground;
style.FillForegroundColor = IndexedColors.DarkBlue.Index;
}, font =>
{
font.Boldweight = 700;
font.FontHeightInPoints = 14;
font.Color = IndexedColors.White.Index;
});
var leftCellStyle = workbook.NewCellStyle(
style =>
{
style.Indention = 1;
style.Alignment = HorizontalAlignment.Left;
});
var centerCellStyle = workbook.NewCellStyle();
var hyperlinkCellStyle = workbook.NewCellStyle(
style =>
{
style.Indention = 1;
style.Alignment = HorizontalAlignment.Left;
}
, font =>
{
font.Color = IndexedColors.DarkBlue.Index;
font.Underline = FontUnderlineType.Single;
});
// 目录Sheet。
var bookmarkIndex = 1;
var bookmarkSheet = workbook.CreateSheet("目录");
var titleRow = bookmarkSheet.CreateRow(0);
titleRow.HeightInPoints = 32;
titleRow.CreateCell(0, titleCellStyle).SetCellValue("序号");
titleRow.CreateCell(1, titleCellStyle).SetCellValue("表名称");
titleRow.CreateCell(2, titleCellStyle).SetCellValue("描述");
titleRow.CreateCell(3, titleCellStyle).SetCellValue("备注");
bookmarkSheet.SetColumnWidth(0, 10 * 256);
bookmarkSheet.SetColumnWidth(1, 60 * 256);
bookmarkSheet.SetColumnWidth(2, 45 * 256);
bookmarkSheet.SetColumnWidth(3, 45 * 256);
// 首行冻结。
bookmarkSheet.CreateFreezePane(0, 1);
var schemas = tables.GroupBy(t => t.Schema);
foreach (var schema in schemas)
{
var rowIndex = 0;
var sheetName = string.IsNullOrWhiteSpace(schema.Key) ? "公共" : schema.Key;
var sheet = workbook.CreateSheet(sheetName);
// 添加表格定义。
foreach (var table in schema)
{
// 在目录Sheet中添加表的目录信息。
var bookmarkRow = bookmarkSheet.CreateRow(bookmarkIndex);
bookmarkRow.HeightInPoints = 22;
bookmarkRow.CreateCell(0, centerCellStyle).SetCellValue(bookmarkIndex++);
bookmarkRow.CreateCell(1, hyperlinkCellStyle).SetCellValue($"{table.Name}");
bookmarkRow.CreateCell(2, leftCellStyle).SetCellValue(table.Comments);
bookmarkRow.CreateCell(3, leftCellStyle).SetCellValue("");
bookmarkRow.Cells[1].Hyperlink = new HSSFHyperlink(HyperlinkType.Document)
{
Address = $"#{sheetName}!A{rowIndex + 3}"
};
bookmarkRow.Cells[1].CellStyle.FillForegroundColor = IndexedColors.Blue.Index;
// 添加表说明。
var tableRow = sheet.CreateRow(rowIndex);
// 合并单元格。
var reginIndex = sheet.AddMergedRegion(new CellRangeAddress(rowIndex, rowIndex, 0, 6));
tableRow.Height = 38 * 20;
tableRow.CreateCell(0, tableCellStyle).SetCellValue($"{table.Comments}表({table.Name})");
rowIndex++;
// 添加标题。
titleRow = sheet.CreateRow(rowIndex++);
titleRow.Height = 28 * 20;
titleRow.CreateCell(0, titleCellStyle).SetCellValue("序号");
titleRow.CreateCell(1, titleCellStyle).SetCellValue("名称");
titleRow.CreateCell(2, titleCellStyle).SetCellValue("类型");
titleRow.CreateCell(3, titleCellStyle).SetCellValue("长度");
titleRow.CreateCell(4, titleCellStyle).SetCellValue("约束");
titleRow.CreateCell(5, titleCellStyle).SetCellValue("描述");
titleRow.CreateCell(6, titleCellStyle).SetCellValue("备注");
var columnIndex = 1;
// 添加表的列定义。
foreach (var column in table.Columns)
{
var row = sheet.CreateRow(rowIndex++);
row.Height = 22 * 20;
row.CreateCell(0, centerCellStyle).SetCellValue(columnIndex++);
row.CreateCell(1, leftCellStyle).SetCellValue(column.Name);
row.CreateCell(2, leftCellStyle).SetCellValue(column.DataType);
row.CreateCell(3, leftCellStyle).SetCellValue(column.DataLength);
row.CreateCell(4, leftCellStyle).SetCellValue(column.IsIdentity ? "主键" : column.IsNullable ? "可空" : "非空");
row.CreateCell(5, leftCellStyle).SetCellValue(column.Description);
row.CreateCell(6, centerCellStyle).SetCellValue("");
}
// 设置列宽。
sheet.SetColumnWidth(0, 8 * 256);
sheet.SetColumnWidth(1, 40 * 256);
sheet.SetColumnWidth(2, 18 * 256);
sheet.SetColumnWidth(3, 12 * 256);
sheet.SetColumnWidth(4, 12 * 256);
sheet.SetColumnWidth(5, 45 * 256);
sheet.SetColumnWidth(6, 45 * 256);
rowIndex += 3;
}
}
using (stream)
{
workbook.Write(stream);
}
}
