先上几张图更直观展示一下要实现的功能，本功能主要通过Jquery ajaxfileupload.js插件结合ajaxUpFile.ashx一般应用程序处理文件实现Ajax无刷新上传功能，结合NPOI2.0实现数据读取。这个功能在实际工作种经常用到，希望能给需要做这方面的人有些帮助。
一、功能页面布局及介绍
1、上传页面布局及input file上传功能
2、上传页面文件正在上传效果
3、上传完成效果，多文件展示区
二、功能代码实现及资源引用
1、js资源文件引用
html页面js引用，需要引用jquery文件，我这里用到jquery-1.8.1.min.js和ajaxfileupload.js插件。ajaxfileupload.js插件下载地址：http://download.csdn.net/detail/fuyifang/8534801
<script src="js/jquery-1.8.1.min.js" type="text/javascript"></script>
<script src="js/ajaxfileupload.js" type="text/javascript"></script>2、html页面实现代码
采用html+jquey ajax方式去实现上传功能，可以下载Excel导入模版；
<tr>
<td>
<div class="inlin-label-box">
<label>选择剔除用户：</label>
<label style=" width:220px;">
<input type="file" id="fu_UploadFile" name="fu_UploadFile" style="height:26px;" /></label>
<label><input type="button" onclick="Upload()" value="上传" style="height: 26px; padding: 0px 10px 0px 10px;margin-left:10px;" class="btn" /></label><span class="tip-inline">（<a href="Template/剔除上传数据导入格式.xlsx">下载Excel导入模板</a>）</span>
<label>
<iframe src="" id="downloadFrame" style="display: none;"></iframe>
</label>
</div>
</td>
</tr>3、JavaScript客户端实现代码
ajaxfileupload.js结合ajaxUpFile.ashx一般应用程序处理文件实现Ajax无刷新上传功能并且显示灰色遮罩；
//文件上传事件方法
function Upload()
{
//如果有需要验证的可以在这里操作
UploadFile();
}
//文件上传逻辑方法
function UploadFile()
{
//任务id，这里偷懒了直接复制页面服务器端空间生成后ID
var JobinfoId = jQuery("#ctl00_ContentPlaceHolder1_hd_JobinfoId").val();
var PlanCode = jQuery("#ctl00_ContentPlaceHolder1_hd_PlanCode").val();
var path = document.getElementById("fu_UploadFile").value;
if ($.trim(path) == "") { alert("请选择要上传的文件"); return; }
//弹出上传等待提示框
hideReg("div_error"); //隐藏错误提示
jQuery("#div_UpExcelLoading_msg").html("文件数据正在上传中，请耐心等待！");
showDialogue("div_Confirm");
showReg("div_UpExcelLoading");
var result_msg = "";
$.ajaxFileUpload({
url: 'Ajax/ajaxUpFile.ashx',
type: 'post',
secureuri: false, //一般设置为false
fileElementId: 'fu_UploadFile', // 上传文件的id、name属性名
dataType: 'json', //返回值类型，一般设置为json、application/json
data: { "JobinfoId": JobinfoId, "PlanCode": PlanCode }, //传递参数到服务器
success: function (data, status) {
var result = eval("[" + data + "]");
hideReg("div_UpExcelLoading");
if (result[0].code == 3) {
result_msg += "文件上传成功！";
var id = result[0].id;
var name = result[0].file_name;
//$("#file_name").html(result[0].file_name + "-下载");
$("#plList_file").append("<label style='white-space: normal;overflow: hidden;cursor: pointer;' id='lb_" + id + "' style=\"margin-left: 10px;\" title='" + name + "'> <a href=\"#\" id=\"file_name" + id + "\" onclick=\"behaviorObj.DownloadFile(" + id + ");\">" + name + "</a><img id='img_" + id + "' src=\"css/cupertino/images/cross_circle.png\" style=\"height: 10px; line-height: 10px;margin-left: 2px;\" alt=\"删除\" onclick=\"RemoveFile(" + id + ");\" /> </label>");
//alert(result_msg);
jQuery("#span_msg").html(result_msg);
showDialogue("div_Confirm");
showReg("div_error");
} else {
//alert(result[0].msg);
jQuery("#span_msg").html(result[0].msg);
showDialogue("div_Confirm");
showReg("div_error");
}
},
error: function (data, status, e) {
// alert(e);
alert("错误：上传组件错误，请检察网络!");
}
});
}
4、ajaxUpFile.ashx实现代码
这个地方值得注意的是需要读取Excel文件，需要引用NPOI的dll，这个可以在百度上搜索一下，尽量采用新版本，兼容性好。
也可以在CSDN下载NOPI，下载地址：http://download.csdn.net/detail/xiaopenglin/4365472
需要引用的NPOI的命名空间如下：
using NPOI.SS.UserModel;
using NPOI.HSSF.UserModel;
using NPOI.XSSF.UserModel;
using Marketing.Utility;
using Newtonsoft.Json;C# Excel读取写入等功能实现代码：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.IO;
using System.Net;
using NPOI.SS.UserModel;
using NPOI.HSSF.UserModel;
using NPOI.XSSF.UserModel;
using Marketing.Utility;
using Newtonsoft.Json;
using System.Text;
using Marketing.BLL;
using Marketing.Entity.DataModel;
namespace Marketing.WebSite.Ajax
{
/// <summary>
/// Summary description for ajaxUpFile
/// </summary>
public class ajaxUpFile : IHttpHandler
{
//剔除数据上传表
MdDatacubeofremovedetailBL _MdDatacubeofremovedetailBL = new MdDatacubeofremovedetailBL();
//任务主表业务逻辑层
MdDatacubeofjobinfoBL _MdDatacubeofjobinfoBL = new MdDatacubeofjobinfoBL();
//文件上传记录表业务层
MdDatacubeofremovefileBL _MdDatacubeofremovefileBL = new MdDatacubeofremovefileBL();
private static CLogger _logger = new CLogger("AjaxUpFile"); //声明日志记录对象
public void ProcessRequest(HttpContext context)
{
var json = JsonConvert.SerializeObject(new { code = 0, msg = "操作失败" });
context.Response.ContentType = "text/html";//这里很关键，虽然前台数据类型是json，但这里一定要写html
//获取前台传来的文件
//HttpFileCollection files = HttpContext.Current.Request.Files;
HttpPostedFile _upfile = context.Request.Files["fu_UploadFile"];
if (_upfile != null)
{
string result = FileUpLoad(_upfile);
context.Response.Write(result);
}
}
/// <summary>
///文件上传方法
/// </summary>
/// <param name="file">HttpPostedFile</param>
/// <returns></returns>
private string FileUpLoad(HttpPostedFile file)
{
var json = JsonConvert.SerializeObject(new { code = 0, msg = "" });
//得到当前规则ID
var JobinfoId = HttpContext.Current.Request.Form["JobinfoId"];
//数据包号ID
var PlanCode = HttpContext.Current.Request.Form["PlanCode"];
int FType = 0;//文件类型
string fileName, fileExtension;//文件名
fileName = System.IO.Path.GetFileName(file.FileName);
fileExtension = System.IO.Path.GetExtension(fileName).ToLower();
int FileLen = file.ContentLength;
Byte[] files = new Byte[FileLen];
Stream sr = file.InputStream;//创建数据流对象
sr.Read(files, 0, FileLen);
sr.Close();
string fileType = Path.GetExtension(fileName).ToLower();
if (!fileType.Equals(".xlsx") && !fileType.Equals(".xls"))
{
json = JsonConvert.SerializeObject(new { code = 0, msg = "必须上传Excel文件" });
}
else
{
var emsg = string.Empty;
string BatchNo = this.GenerateGUID();//得到唯一批号
MdDatacubeofjobinfo MdDatacubeofjobinfoModel = _MdDatacubeofjobinfoBL.FindByPk(JobinfoId.ToInt(0));
if (MdDatacubeofjobinfoModel != null)
{
//验证数据
IWorkbook workbook = null;
using (MemoryStream ms = new MemoryStream(files, 0, files.Length))
{
FType = this._getFileType(fileName);
if (FType == 2)//Office 2007以上
{
workbook = new XSSFWorkbook(ms); //将内存流转换为Excel对象
}
else if (FType == 1) //Office 2003
{
workbook = new HSSFWorkbook(ms);
}
}
for (int i = 0; i < workbook.NumberOfSheets; i++) //遍历Sheet集
{
ISheet sheet = workbook.GetSheetAt(i); //获取当前Sheet
if (sheet.LastRowNum > 0)
{
if (sheet.GetRow(0).LastCellNum < 1)
{
emsg += "模板列小于1列、";
}
else if (!sheet.GetRow(0).Cells[0].StringCellValue.Trim().Equals("主键"))
{
emsg += "缺少主键列、";
}
}
else
{
emsg += "无数据、";
}
}
if (!string.IsNullOrEmpty(emsg))
{
json = JsonConvert.SerializeObject(new { code = 0, msg = emsg.Substring(0, emsg.Length - 1) });
}
else
{
//文件上传
string downloadPath = string.Empty;
try
{
//序列化
string json_flies = JsonConvert.SerializeObject(files);
byte[] postArray = Encoding.UTF8.GetBytes(json_flies);
downloadPath = FileWS.UploadFile("Marketing_DataCube", FileType.excel, postArray); //上传文件
}
catch (Exception ex)
{
_logger.Error("Excel文件上传异常", ex, ErrorCode.ApplicationException);
}
if (string.IsNullOrEmpty(downloadPath))
{
json = JsonConvert.SerializeObject(new { code = 2, msg = "上传文件失败" });
}
else
{
try
{
DateTime tempTime = DateTime.Now;
LogHelper.WriteLog("upfile begin--------\n" + string.Format("{0}已执开始", tempTime));
ISheet sheet = workbook.GetSheetAt(0); //获取当前Sheet
if (sheet.LastRowNum > 0)
{
//lastCellNum = sheet.GetRow(0).LastCellNum;
//sheet.GetRow(0).CreateCell(lastCellNum, CellType.String).SetCellValue("备注");
IList<MdDatacubeofremovedetail> MdDatacubeofremovedetailList = new List<MdDatacubeofremovedetail>();
//上传文件上传成功
for (int j = 1; j <= sheet.LastRowNum; j++) //遍历当前Sheet行
{
IRow row = sheet.GetRow(j); //读取当前行数据
if (row != null)
{
if (row.Cells.Count >= 1)
{
row.Cells[0].SetCellType(CellType.String);
//row.Cells[2].SetCellType(CellType.String);
//row.Cells[3].SetCellType(CellType.String);
var FieldText = row.Cells[0].StringCellValue;
//uid = row.Cells[2].StringCellValue;
//originalUrl = row.Cells[3].StringCellValue;
//ICell srCell = row.CreateCell(lastCellNum, CellType.String);
//srCell.SetCellValue("备注"); //设置备注
MdDatacubeofremovedetail _MdDatacubeofremovedetailModel = new MdDatacubeofremovedetail();
_MdDatacubeofremovedetailModel.JobinfoId = JobinfoId.ToInt(0);
_MdDatacubeofremovedetailModel.PlanCode = PlanCode.ToString().Trim();
_MdDatacubeofremovedetailModel.FieldDataType = MdDatacubeofjobinfoModel.ChannelType;
_MdDatacubeofremovedetailModel.FieldText = FieldText.Trim();
_MdDatacubeofremovedetailModel.BatchNo = BatchNo;
_MdDatacubeofremovedetailModel.DataChange_CreateUser = AppParams.Instance.EID;
_MdDatacubeofremovedetailModel.DataChange_CreateTime = DateTime.Now;
MdDatacubeofremovedetailList.Add(_MdDatacubeofremovedetailModel);
}
}
}
if (MdDatacubeofremovedetailList.Count > 0)
{
int pageSize = 100;
int pageCount = 0;
if (MdDatacubeofremovedetailList.Count >= pageSize)
{
if (MdDatacubeofremovedetailList.Count % pageSize == 0)
{
pageCount = MdDatacubeofremovedetailList.Count / pageSize;
}
else
{
pageCount = MdDatacubeofremovedetailList.Count / pageSize + 1;
}
}
else
{
pageCount = 1;
}
for (int j = 0; j < pageCount; j++) //遍历当前Sheet行
{
IList<MdDatacubeofremovedetail> list = MdDatacubeofremovedetailList.Skip(j * pageSize).Take(pageSize).ToList();
bool count = _MdDatacubeofremovedetailBL.BulkInsert(list);
}
//记录文件上传名
MdDatacubeofremovefile MdDatacubeofremovefileModel = new MdDatacubeofremovefile();
MdDatacubeofremovefileModel.BatchNo = BatchNo;
MdDatacubeofremovefileModel.JobinfoId = JobinfoId.ToInt(0);
MdDatacubeofremovefileModel.PlanCode = PlanCode.ToString().Trim();
MdDatacubeofremovefileModel.ImportFileName = fileName;
MdDatacubeofremovefileModel.ImportFileNameUrl = downloadPath;
MdDatacubeofremovefileModel.FileType = FType;
MdDatacubeofremovefileModel.DataChange_CreateTime = DateTime.Now;
MdDatacubeofremovefileModel.DataChange_CreateUser = AppParams.Instance.EID;
long count_id = _MdDatacubeofremovefileBL.InsertMdDatacubeofremovefile(MdDatacubeofremovefileModel);
LogHelper.WriteLog("upfile end--------\n" + string.Format("{0}已执行完成, 耗时{1}/ms",
DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"), TimeHelper.GetDifferMilliSecond(tempTime)));
json = JsonConvert.SerializeObject(new { code = 3, msg = "文件上传成功", file_name = fileName, id = count_id });
}
}
}
catch (Exception ex)
{
_logger.Error("Excel文件读取或写入异常", ex, ErrorCode.ApplicationException);
json = JsonConvert.SerializeObject(new { code = 0, msg = "数据写入异常" });
}
}
}
}
}
return json;
}
/// <summary>
/// 生成GUID
/// 1、Guid.NewGuid().ToString("N") 结果为： 38bddf48f43c48588e0d78761eaa1ce6
/// 2、Guid.NewGuid().ToString("D") 结果为： 57d99d89-caab-482a-a0e9-a0a803eed3ba
/// 3、Guid.NewGuid().ToString("B") 结果为： {09f140d5-af72-44ba-a763-c861304b46f8}
/// 4、Guid.NewGuid().ToString("P") 结果为： (778406c2-efff-4262-ab03-70a77d09c2b5)
/// </summary>
/// <returns></returns>
private string GenerateGUID()
{
return System.Guid.NewGuid().ToString("N");
}
/// <summary>
/// Description:
/// 1. 获取文件类型
/// 2. 私有函数
/// Author : 付义方
/// Create Date: 2014-02-09
/// </summary>
/// <param name="uploadFileName">上传文件名</param>
/// <returns>文件类型 `</returns>
private byte _getFileType(string uploadFileName)
{
if (uploadFileName.IndexOf(".xlsx") != -1)
return 2;
else if (uploadFileName.IndexOf(".xls") != -1)
return 1;
else if (uploadFileName.IndexOf(".txt") != -1)
return 3;
else if (uploadFileName.IndexOf(".csv") != -1)
return 4;
else
throw new Exception(string.Format("{0}为未知文件类型", uploadFileName));
}
public bool IsReusable
{
get
{
return false;
}
}
}
}以上希望多各位需要做ajax文件上传的朋友有些帮助，谢谢！
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