发布：2023/3/24 22:02:06作者：管理员 来源：本站 浏览次数：770
1.添加依赖 DotNetCore.NPOI
2.读取Excel类库
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.IO;
using System.Reflection;
using System.Collections;
using System.Data;
using NPOI.SS.UserModel;
namespace SVW_ReOnLine.BLL.Common
{
/// <summary>
/// Summary description for OfficeHelper
/// </summary>
public class OfficeHelper
{
/// <summary>
/// 将excel文件内容读取到DataTable数据表中
/// </summary>
/// <param name="fileName">文件完整路径名</param>
/// <param name="sheetName">指定读取excel工作薄sheet的名称</param>
/// <param name="isFirstRowColumn">第一行是否是DataTable的列名：true=是，false=否</param>
/// <returns>DataTable数据表</returns>
public static DataTable ReadExcelToDataTable(string fileName, string sheetName = null, bool isFirstRowColumn = true)
{
//定义要返回的datatable对象
DataTable data = new DataTable();
//excel工作表
ISheet sheet = null;
//数据开始行(排除标题行)
int startRow = 0;
try
{
if (!File.Exists(fileName))
{
return null;
}
//根据指定路径读取文件
FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
//根据文件流创建excel数据结构
IWorkbook workbook = WorkbookFactory.Create(fs);
//IWorkbook workbook = new HSSFWorkbook(fs);
//如果有指定工作表名称
if (!string.IsNullOrEmpty(sheetName))
{
sheet = workbook.GetSheet(sheetName);
//如果没有找到指定的sheetName对应的sheet，则尝试获取第一个sheet
if (sheet == null)
{
sheet = workbook.GetSheetAt(0);
}
}
else
{
//如果没有指定的sheetName，则尝试获取第一个sheet
sheet = workbook.GetSheetAt(0);
}
if (sheet != null)
{
IRow firstRow = sheet.GetRow(0);
//一行最后一个cell的编号 即总的列数
int cellCount = firstRow.LastCellNum;
//如果第一行是标题列名
if (isFirstRowColumn)
{
for (int i = firstRow.FirstCellNum; i < cellCount; ++i)
{
ICell cell = firstRow.GetCell(i);
if (cell != null)
{
string cellValue = cell.StringCellValue;
if (cellValue != null)
{
DataColumn column = new DataColumn(cellValue);
data.Columns.Add(column);
}
}
}
startRow = sheet.FirstRowNum + 1;
}
else
{
startRow = sheet.FirstRowNum;
}
//最后一列的标号
int rowCount = sheet.LastRowNum;
for (int i = startRow; i <= rowCount; ++i)
{
IRow row = sheet.GetRow(i);
if (row == null) continue; //没有数据的行默认是null
DataRow dataRow = data.NewRow();
for (int j = row.FirstCellNum; j < cellCount; ++j)
{
if (row.GetCell(j) != null) //同理，没有数据的单元格都默认是null
dataRow[j] = row.GetCell(j).ToString();
}
data.Rows.Add(dataRow);
}
}
return data;
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// 将文件流读取到DataTable数据表中
/// </summary>
/// <param name="fileStream">文件流</param>
/// <param name="sheetName">指定读取excel工作薄sheet的名称</param>
/// <param name="isFirstRowColumn">第一行是否是DataTable的列名：true=是，false=否</param>
/// <returns>DataTable数据表</returns>
public static DataTable ReadStreamToDataTable(Stream fileStream, string sheetName = null, bool isFirstRowColumn = true)
{
//定义要返回的datatable对象
DataTable data = new DataTable();
//excel工作表
ISheet sheet = null;
//数据开始行(排除标题行)
int startRow = 0;
try
{
//根据文件流创建excel数据结构,NPOI的工厂类WorkbookFactory会自动识别excel版本，创建出不同的excel数据结构
IWorkbook workbook = WorkbookFactory.Create(fileStream);
//如果有指定工作表名称
if (!string.IsNullOrEmpty(sheetName))
{
sheet = workbook.GetSheet(sheetName);
//如果没有找到指定的sheetName对应的sheet，则尝试获取第一个sheet
if (sheet == null)
{
sheet = workbook.GetSheetAt(0);
}
}
else
{
//如果没有指定的sheetName，则尝试获取第一个sheet
sheet = workbook.GetSheetAt(0);
}
if (sheet != null)
{
IRow firstRow = sheet.GetRow(0);
//一行最后一个cell的编号 即总的列数
int cellCount = firstRow.LastCellNum;
//如果第一行是标题列名
if (isFirstRowColumn)
{
for (int i = firstRow.FirstCellNum; i < cellCount; ++i)
{
ICell cell = firstRow.GetCell(i);
if (cell != null)
{
string cellValue = cell.StringCellValue;
if (cellValue != null)
{
DataColumn column = new DataColumn(cellValue);
data.Columns.Add(column);
}
}
}
startRow = sheet.FirstRowNum + 1;
}
else
{
startRow = sheet.FirstRowNum;
}
//最后一列的标号
int rowCount = sheet.LastRowNum;
for (int i = startRow; i <= rowCount; ++i)
{
IRow row = sheet.GetRow(i);
if (row == null || row.FirstCellNum < 0) continue; //没有数据的行默认是null
DataRow dataRow = data.NewRow();
for (int j = row.FirstCellNum; j < cellCount; ++j)
{
//同理，没有数据的单元格都默认是null
ICell cell = row.GetCell(j);
if (cell != null)
{
if (cell.CellType == CellType.Numeric)
{
//判断是否日期类型
if (DateUtil.IsCellDateFormatted(cell))
{
dataRow[j] = row.GetCell(j).DateCellValue;
}
else
{
dataRow[j] = row.GetCell(j).ToString().Trim();
}
}
else
{
dataRow[j] = row.GetCell(j).ToString().Trim();
}
}
}
data.Rows.Add(dataRow);
}
}
return data;
}
catch (Exception ex)
{
throw ex;
}
}
}
}
3.控制器端Controller
public class UploadController : Controller
{
private ILog log = LogManager.GetLogger(Startup.repository.Name, typeof(UploadController));
private IHostingEnvironment hostingEnv;
public UploadController(IHostingEnvironment env)
{
this.hostingEnv = env;
}
[HttpPost]
public JsonResult UploadFilesAjax()
{
JArray lst = new JArray();
JObject jsonResult = new JObject();
int result = 0;
//long size = 0;
string fileNamePath = string.Empty;
string RequestPath = string.Empty;
try
{
//string domurl = @"http://dy.dt1.biz/upload/";
string domurl = @"http://localhost:57663/upload/";
var files = Request.Form.Files;
foreach (var file in files)
{
string fileName = DateTime.Now.ToString("MMddHHmmss") + file.FileName;
fileNamePath = Path.Combine("upload", fileName);
string serverUrl = Request.HttpContext.Connection.LocalIpAddress.ToStringExt() + ":" + Request.HttpContext.Connection.LocalPort.ToStringExt() + @"/upload/DeviceImage.jpg";
log.Info("客户端IP地址2：" + serverUrl);
RequestPath = domurl + fileName;
//size += file.Length;
//保存文件
//物理路径
string SavePath=Path.Combine(hostingEnv.WebRootPath, fileNamePath);
using (FileStream fs = new FileStream(SavePath, FileMode.CreateNew))
{
file.CopyTo(fs);
fs.Flush();
result = 1;
}
DataTable dt= OfficeHelper.ReadExcelToDataTable(SavePath);
for (int i = 0; i < dt.Rows.Count; i++)
{
JObject obj = new JObject();
for (int j = 0; j < dt.Columns.Count; j++)
{
obj.Add("col"+j.ToString(), dt.Rows[i][j].ToStringExt());
}
lst.Add(obj);
}
}
//string url = Request.HttpContext.Connection.RemoteIpAddress.ToStringExt()+":"+ Request.HttpContext.Connection.RemotePort.ToStringExt();
jsonResult.Add("Result", result);
jsonResult.Add("ImageUrl", RequestPath);
jsonResult.Add("Data", lst);
}
catch (Exception ex)
{
log.Error("上传文件错误信息列表错误：" + ex.ToStringExt());
jsonResult.Add("Result", result);
}
return Json(jsonResult);
}
4. index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
<title>用户登陆</title>
<link href="/css/bootstrap.min.css" rel="stylesheet">
<style>
.panel {
width: 375px;
margin: 15px auto;
}
#submit {
width: 100%;
}
img {
width: 100%;
}
.breadcrumb {
margin-bottom: 10px;
}
@media screen and (max-width: 480px) {
.panel {
width: 100%;
margin: 0;
border: 0;
box-shadow: none;
}
}
</style>
</head>
<body>
<div class="panel panel-default">
<div class="panel-heading" align="center"><b>用户登陆</b></div>
<div class="panel-body">
<input type="file" id="files" name="files" multiple />
<input type="button" id="uploadExcel" value="Upload Selected Files" />
</div>
</div>
<script src="/js/jquery.min.js"></script>
<script src="/js/bootstrap.min.js"></script>
<script>
$("#uploadExcel").click(function (evt) {
var fileUpload = $("#files").get(0);
var files = fileUpload.files;
var data = new FormData();
for (var i = 0; i < files.length; i++) {
data.append(files[i].name, files[i]);
}
$.ajax({
type: "POST",
url: "api/Upload/UploadFilesAjax",
contentType: false,
processData: false,
data: data,
success: function (message) {
//var Msg = eval('(' + message + ')');
alert("【Result】:" + message.Result + ";【ImageUrl】:" + message.ImageUrl);
1
},
error: function () {
alert("There was error uploading files!");
}
});
});
</script>
</body>
</html>
