使用EPPlus将DataTable导出为excel-Java 学习之路

我想用EPPlus将数据表导出到excel文件，数据表具有int类型的属性，所以我想在excel文件中，格式相同 . 有谁知道用这些方法将DataTable导出到Excel？

4 回答

using (ExcelPackage pck = new ExcelPackage(newFile))
{
  ExcelWorksheet ws = pck.Workbook.Worksheets.Add("Accounts");
  ws.Cells["A1"].LoadFromDataTable(dataTable, true);
  pck.Save();
}

这应该为你做的伎俩 . 如果您的字段定义为int，则EPPlus会将列正确地转换为数字或浮点数 .

回复于 2023-09-23T18:35:45+00:00

如果你想在浏览器响应中下载

Response.Clear();
Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
Response.AddHeader("content-disposition", "attachment;filename=" + HttpUtility.UrlEncode("Logs.xlsx", System.Text.Encoding.UTF8));

using (ExcelPackage pck = new ExcelPackage())
{
    ExcelWorksheet ws = pck.Workbook.Worksheets.Add("Logs");
    ws.Cells["A1"].LoadFromDataTable(dt, true);                 
    var ms = new System.IO.MemoryStream();
    pck.SaveAs(ms);
    ms.WriteTo(Response.OutputStream);                          
}

回复于 2023-09-23T18:35:45+00:00

要在浏览器中下载excelsheet，请使用 HttpContext.Current.Response 而不是 Response ，否则会收到 Response is not available in this context. 错误 . 这是我的代码

public void ExporttoExcel(DataTable table, string filename)
{
    HttpContext.Current.Response.Clear();
    HttpContext.Current.Response.ClearContent();
    HttpContext.Current.Response.ClearHeaders();
    HttpContext.Current.Response.Buffer = true;
    HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.UTF8;
    HttpContext.Current.Response.Cache.SetCacheability(HttpCacheability.NoCache);
    HttpContext.Current.Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
    HttpContext.Current.Response.AddHeader("content-disposition", "attachment;filename=GridData.xlsx");


    using (ExcelPackage pack = new ExcelPackage())
    {
        ExcelWorksheet ws = pack.Workbook.Worksheets.Add(filename);
        ws.Cells["A1"].LoadFromDataTable(table, true);
        var ms = new System.IO.MemoryStream();
        pack.SaveAs(ms);
        ms.WriteTo(HttpContext.Current.Response.OutputStream); 
    }

    HttpContext.Current.Response.Flush();
    HttpContext.Current.Response.End();

}

回复于 2023-09-23T18:35:45+00:00

122

这是一个将DataSet导出到Excel的代码段：

private static void DataSetToExcel(DataSet dataSet, string filePath)
    {
        using (ExcelPackage pck = new ExcelPackage())
        {
            foreach (DataTable dataTable in dataSet.Tables)
            {
                ExcelWorksheet workSheet = pck.Workbook.Worksheets.Add(dataTable.TableName);
                workSheet.Cells["A1"].LoadFromDataTable(dataTable, true);
            }

            pck.SaveAs(new FileInfo(filePath));
        }
    }

并使用声明：

using OfficeOpenXml;
using System.Data;
using System.IO;

回复于 2023-09-23T18:35:45+00:00

使用EPPlus将DataTable导出为excel

4 回答

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