ExportHandler.ashx

时间：2022-01-15 00:10:21

using KYZWeb.Common;
using Liger.Data;
//using Microsoft.Office.Interop.Excel;
using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Linq;
using System.Text;
using System.Web;

namespace KYZWeb.Modules.DeviceMan
{
    /// <summary>
    /// ExportHandler 的摘要说明
    /// </summary>
    public class ExportHandler : IHttpHandler
    {

public static DbContext DB = DbHelper.Db;
        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";

string startdatetime = context.Request.Params["startdatetime"];
            string enddatetime = context.Request.Params["enddatetime"];
            string user_name = context.Request.Params["user_name"];
            StringBuilder sql = new StringBuilder();
            sql.Append(@"   select  * ");
            sql.Append("  from dbo.vi_card_run WHERE 1=1");
            if (!string.IsNullOrEmpty(startdatetime))
            {
                sql.Append(" and card_datetime >= '" + startdatetime + "'");
            }
            if (!string.IsNullOrEmpty(enddatetime))
            {
                sql.Append(" and card_datetime <= '" + enddatetime + "'");
            }
            if (!string.IsNullOrEmpty(user_name))
            {
                sql.Append(" and user_name like '%" + user_name + "%'");
            }
            sql.Append(" order by card_datetime desc");
            //创建command
            var dt = DB.Db.ExecuteDataSet(CommandType.Text, sql.ToString()).Tables[0];

StringWriter sw = new StringWriter();
            //sw.WriteLine("姓名\t工号\t打卡时间\t打卡地点\t打卡设备");
            sw.WriteLine("<html xmlns:x=\"urn:schemas-microsoft-com:office:excel\">");
            sw.WriteLine("<head>");
            sw.WriteLine("<!--[if gte mso 9]>");
            sw.WriteLine("<xml>");
            sw.WriteLine(" <x:ExcelWorkbook>");
            sw.WriteLine("  <x:ExcelWorksheets>");
            sw.WriteLine("   <x:ExcelWorksheet>");
            sw.WriteLine("    <x:Name>" + "sheetName" + "</x:Name>");
            sw.WriteLine("    <x:WorksheetOptions>");
            sw.WriteLine("      <x:Print>");
            sw.WriteLine("       <x:ValidPrinterInfo />");
            sw.WriteLine("      </x:Print>");
            sw.WriteLine("    </x:WorksheetOptions>");
            sw.WriteLine("   </x:ExcelWorksheet>");
            sw.WriteLine("  </x:ExcelWorksheets>");
            sw.WriteLine("</x:ExcelWorkbook>");
            sw.WriteLine("</xml>");
            sw.WriteLine("<![endif]-->");
            sw.WriteLine("</head>");
            sw.WriteLine("<body>");
            sw.WriteLine("<table border='1'>");
            sw.WriteLine(" <tr >");
            sw.WriteLine("  <td><strong>姓名</strong></td>");
            sw.WriteLine("  <td><strong>工号</strong></td>");
            sw.WriteLine("  <td><strong>打卡时间</strong></td>");
            sw.WriteLine("  <td><strong>打卡地点</strong></td>");
            sw.WriteLine("  <td><strong>打卡设备</strong></td>");
            
            sw.WriteLine(" </tr>");

foreach (DataRow dr in dt.Rows)
            {
                //sw.WriteLine(dr["user_name"] + "\t" + dr["user_code"] + "\t" + dr["card_datetime"]+"\t"+dr["card_address"]+"\t"+dr["card_device_name"]);
                sw.WriteLine(" <tr>");
                sw.WriteLine("  <td>" + dr["user_name"] + "</td>");
                sw.WriteLine("  <td>" + dr["user_code"] + "</td>");
                sw.WriteLine("  <td>" + dr["card_datetime"] + "</td>");
                sw.WriteLine("  <td>" + dr["area_name"] + "</td>");
                sw.WriteLine("  <td>" + dr["device_name"] + "</td>");
            
                sw.WriteLine(" </tr>");
            }
            sw.WriteLine("</table>");
            sw.WriteLine("</body>");
            sw.WriteLine("</html>");
            sw.Close();
            context.Response.Clear();
            context.Response.Buffer = true;
            context.Response.Charset = "UTF-8";

context.Response.AddHeader("Content-Disposition", "attachment; filename=" + "card" + ".xls");
            context.Response.ContentType = "application/ms-excel";
            context.Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
            context.Response.Write(sw);
            context.Response.End();
            //context.Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
            //context.Response.AddHeader("Content-Disposition", "attachment; filename=" + System.Web.HttpUtility.UrlEncode("card", System.Text.Encoding.UTF8) + ".xls");
            //context.Response.ContentType = "application/ms-excel";
            //context.Response.Write(sw);
            //context.Response.End();

//DataTabletoExcel(dt, "C:\\中国.XLS");   //调用自定义的函数，当然输出文件你可以随便写
        }

public static void DataTabletoExcel(System.Data.DataTable tmpDataTable, string strFileName)
        {

if (tmpDataTable == null)

return;

int rowNum = tmpDataTable.Rows.Count;

int columnNum = tmpDataTable.Columns.Count;

int rowIndex = 1;

int columnIndex = 0;

//Application xlApp = new ApplicationClass();

//xlApp.DefaultFilePath = "";

//xlApp.DisplayAlerts = true;

//xlApp.SheetsInNewWorkbook = 1;

//Workbook xlBook = xlApp.Workbooks.Add(true);

////将DataTable的列名导入Excel表第一行

//foreach (DataColumn dc in tmpDataTable.Columns)
            //{

//    columnIndex++;

//    xlApp.Cells[rowIndex, columnIndex] = dc.ColumnName;

//}

////将DataTable中的数据导入Excel中

//for (int i = 0; i < rowNum; i++)
            //{

//    rowIndex++;

//    columnIndex = 0;

//    for (int j = 0; j < columnNum; j++)
            //    {

//        columnIndex++;

//        xlApp.Cells[rowIndex, columnIndex] = tmpDataTable.Rows[i][j].ToString();

//    }

//}

////xlBook.SaveCopyAs(HttpUtility.UrlDecode(strFileName, System.Text.Encoding.UTF8));

//xlBook.SaveCopyAs(strFileName);

}

public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }
}

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