导入不同业务数据通过Excel实现

Posted 2021-12-01 shuai7boy

很多公司都用到了老系统移植到新系统，数据自然也需要迁移，这个解决方案之一就是使用Excel文件导入。
结合公司实现，然后简单写了个Demo。
（PS:去找朋友本想着花几十分钟弄出来炫耀一波，结果花了三四个小时。究其原因，还是JS问题，JS以后尽量放在html后面，这样就不用担心渲染问题了。）
首先上效果图:

 

下面介绍下具体实现: 

--将学生和课程数据导入到数据库
--以stu开头的是学生，以tea开头的是老师 后面加个_区分学校
--创建学生老师学校表
--下载导入文件
--根据规则匹配学校，然后决定插入学生表还是老师表
--显示导入结果

--学校表
--主键Id,学校名称，学校编号
--学生表
--主键Id,学生姓名，学生年级，学生年龄，所在学校
--老师表
--主键Id,老师姓名，老师年龄，所在学校

 create table School(
   Id int primary key identity,
   Name nvarchar(50),
   Num nvarchar(30)
  )
  create table Student(
  Id int primary key identity,
  Name nvarchar(50),
  Grade int,
  Age int,
  SchoolNum nvarchar(30)
  )

  create table Teacher(
  Id int primary key identity,
   Name nvarchar(50),
   Age int,
   SchoolNum nvarchar(30)
  )

后台代码实现:

using ExportExcelDemo.Core;
using ExportExcelDemo.Core.Helper;
using ExportExcelDemo.Core.Models;
using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Linq;
using System.Text;
using System.Web;
using System.Web.Mvc;

namespace ExportExcelDemo.Web.Controllers
{
    public class HomeController : Controller
    {
        private const string prefix_stu = "stu";
        private const string prefix_tea = "tea";
        public readonly string[] _fileTypes = { prefix_stu, prefix_tea };
        public ActionResult Index()
        {

            SchoolManager schoolManager = new SchoolManager();
            string schoolNum = schoolManager.GetSchoolNum("廊坊师范学院");
            ViewBag.SchoolNum = schoolNum;
            return View();
        }

        [HttpPost()]
        public JsonResult ImportData()
        {
            try
            {
                //文件类型，学校编号
                Tuple<string, string, HttpPostedFileBase> tuble = ValidateFile();
                var file = tuble.Item3;
                var server = HttpContext.Server;
                string tempFileDownloadFolder = server.MapPath("~/Temp/Downloads");
                AppFileHelper.DeleteFilesInFolderIfExists(tempFileDownloadFolder, file.FileName);
                //保存到临时文件夹
                var tempFilePath = Path.Combine(tempFileDownloadFolder, file.FileName);
                file.SaveAs(tempFilePath);
                string r = string.Empty;
                r = ImportDataInteral(tempFilePath, tuble.Item1, tuble.Item2);
               
                return Json(r);

            }
            catch (Exception ex)
            {
                return Json(ex.Message);
            }
        }

        /// <summary>
        /// 验证文件是否合规
        /// </summary>
        /// <returns></returns>

        public Tuple<string, string, HttpPostedFileBase> ValidateFile()
        {
            if (Request.Files.Count <= 0 || Request.Files[0] == null)
            {
                throw new Exception("未找到文件");
            }
            var file = Request.Files[0];
            if (file.ContentLength > 1024 * 1024 * 5) //5m
            {
                throw new Exception("文件不能超过5M");
            }
            string[] names = System.IO.Path.GetFileNameWithoutExtension(file.FileName).Split(‘_‘);//下划线分隔
            string msg = "文件名称错误,请根据导入提示来修改文件名称";
            if (names.Length != 2)
            {
                throw new Exception(msg);
            }
            if (!_fileTypes.Contains(names[0].ToLower()))
            {
                throw new Exception(msg);
            }
            if (string.IsNullOrWhiteSpace(names[1]))
            {
                throw new Exception(msg);
            }
            SchoolManager schoolManager = new SchoolManager();
            string schoolNum = schoolManager.GetSchoolNum(names[1]);
            if (string.IsNullOrEmpty(schoolNum))
            {
                throw new Exception("传入的学校名不存在");
            }
            return new Tuple<string, string, HttpPostedFileBase>(names[0], names[1],file);

        }

        private string ImportDataInteral(string filePath,string fileDateType,string schoolNum)
        {
            DataSet ds = ExeclHelper.ToDataTable(filePath);//根据文件路径转换为
            DataTable dt = ds.Tables[0];

            int rowsCount = dt.Rows.Count;
            int totalRows = rowsCount;

            StringBuilder successMessage = new StringBuilder();
            StringBuilder errMessage = new StringBuilder();

            Action<DataRow, string> action;
            switch (fileDateType)
            {
                case prefix_stu:
                    action = RowDataProcessForStu;break;
                case prefix_tea:
                    action = RowDataProcessForTea;break;
                default:
                   return  errMessage.Append($"文件名前缀{fileDateType}错误").ToString();
            }
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                DataRow dr = dt.Rows[i];
                try
                {
                    action(dr, schoolNum);
                    successMessage.Append($"第{i + 1}行:导入成功\\r\\n");
                }
                catch (System.Exception ex)
                {
                    var error = $"第{i + 1}行 :{ex.Message}\\r\\n";
                    errMessage.Append(error);
                    continue;
                }
            }
            return errMessage.ToString() + successMessage.ToString();

        }

        private void RowDataProcessForStu(DataRow dr,string schoolNum)
        {
            Student model = new Student();
            model.Name = dr[0].ToString();
            model.Grade =Convert.ToInt32(dr[1]);
            model.Age=Convert.ToInt32(dr[2]);
            model.SchoolNum = schoolNum;
            StudentManager studentManager = new StudentManager();
            studentManager.InsertStudent(model);

        }

        private void RowDataProcessForTea(DataRow dr, string schoolNum)
        {
            Teacher model = new Teacher();
            model.Name = dr[0].ToString();
            model.Age = Convert.ToInt32(dr[1]);
            model.SchoolNum = schoolNum;
            TeacherManager teacherManager = new TeacherManager();
            teacherManager.InsertTeacher(model);
        }


    }
}

View Code

前台Html实现:

@{
    ViewBag.Title = "导入数据";
}

<div class="page-title">

    <div class="title-env">
        <h1 class="title"><i class="fa fa-file-text"></i>导入</h1>
    </div>

    <div class="breadcrumb-env">
    </div>

</div>
<div class="row form-leftlabel">
    <div class="col-md-12">
        <div class="row">
            <div class="col-sm-12">
                <div class="panel panel-default">
                    <div class="panel-heading">
                        <h1 class="panel-title">导入说明</h1>
                    </div>
                    <div class="panel panel-default">
                        <div class="panel-body">
                            <form class="form-horizontal form-leftlabel">
                                <div class="form-group">
                                    <label class="col-sm-3 control-label">学生数据：</label>
                                    <div class="col-sm-7">
                                        <label> Execl文件名称规则：<b>stu_学校名称</b>,如：stu_学校名称</label>
                                        <div class="form-group">
                                            <a class="btn btn-default" href="~/Temp/Downloads/stu_学校名称.xlsx" download="学生信息导入.xlsx">下载学生模板文件<i class="fa-download"></i></a>
                                        </div>
                                    </div>
                                </div>

                                <div class="form-group">
                                    <label class="col-sm-3 control-label">老师数据：</label>
                                    <div class="col-sm-7">
                                        <label> Execl文件名称规则:<b>tea_学校名称</b>,如：tea_学校名称</label>

                                        <div class="form-group">
                                            <a class="btn btn-default" href="~/Temp/Downloads/tea_学校名称.xlsx" download="老师信息导入.xlsx">下载老师模板文件<i class="fa-download"></i></a>
                                        </div>
                                    </div>
                                </div>

                            </form>
                        </div>
                    </div>
                </div>

                <div class="panel panel-default">
                    <div class="panel-heading">
                        <h1 class="panel-title">导入操作</h1>
                    </div>
                    <div class="panel-body">
                        <form id="DataImportForm" method="POST" action="@Url.Action("ImportData", "Home", new {area = string.Empty})">
                            <div class="col-sm-7">
                                <input type="file" placeholder="选择模板文件并上传" name="selectExecl" value="" class="form-control " id="selectMemberTxt"
                                       accept="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, application/vnd.ms-excel" />
                            </div>

                            <div class="col-sm-5">
                                <button class="button button-plain2 button-rounded" type="submit" id="btnImport">导入</button>
                            </div>
                        </form>
                    </div>
                </div>
            </div>
        </div>
        <div class="row">
            <div class="col-sm-12">
                <div class="panel panel-default">
                    <div class="panel-heading">
                        <h1 class="panel-title">导入结果</h1>
                    </div>
                    <div class="panel-body">

                        <div class="col-sm-7">
                            <textarea id="verifyResult" class="form-control" value="" rows="6"></textarea>
                        </div>

                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

<script src="~/Scripts/jquery-3.3.1.min.js"></script>
<script src="~/Scripts/jquery.form.js"></script><!--提交表单-->
<link href="~/Content/jquery-ui/jquery-ui.min.css" rel="stylesheet" />
<script src="~/Content/layer/layer.js"></script><!--layer控件-->
<script src="~/Content/ExportExcel.js"></script>

View Code

ExportExcel.js实现:

var index;
//Appearance/Logo
$(‘#DataImportForm‘).ajaxForm({

    beforeSubmit: function (formData, jqForm, options) {

  
        var $fileInput = $(‘#DataImportForm input[name=selectExecl]‘);
        var files = $fileInput.get()[0].files;

        if (!files.length) {           
            layer.msg("请选择execl文件", { icon: 7 });
            return false;
        }

        var file = files[0];

        var type = file.name.substring(file.name.lastIndexOf(".")).toLowerCase();
        if (type != ‘.xlsx‘) {         
            layer.msg("请选择后缀名为.xlsx格式的excel文件", { icon: 7 });
            return false;
        }

        //File size check
        if (file.size > 1024 * 1024 * 5) //5m
        {          
            layer.msg("文件不能超过5m", { icon: 7 });
            return false;
        }
        $(‘#verifyResult‘).val("");
        index =layer.msg("导入中...", {
            icon: 16
            , shade: 0.5,
            time: false //取消自动关闭
        });

        return true;
    },
    success: function (response) {

        $(‘#verifyResult‘).val(response);
        layer.close(index);//手动关闭
      
    }
});

 

View Code

GitHub连接: