标签:return string Layui excel Excel bean mvc ToString res
html
<input type="button" class="layui-btn layui-btn-blue2 layui-btn-sm" id="Excel导入" value="导入" />
js
/*从本地添加excel文件方法*/
layui.use('upload', function () {
var $ = layui.jquery
, upload = layui.upload
, form = layui.form;
upload.render({
elem: '#Excel导入'//附件上传按钮ID
, url: '/tools/excel/'//附件上传后台地址
, multiple: true
, accept: 'file'
, exts: 'xls'//(允许的类别)
, before: function (obj) {/*上传前执行的部分*/ }
, done: function excel(res) {
/*上传后执行的部分*/
$.post("/ImportTool/excel", { newname: res.data.newname }, function (res) { layer.msg(res.msg); }, "json");
}
, allDone: function (res) {/*全部文件上传完毕执行该方法*/ }
});
});//上传事件结束
Controller /tools/excel/
/// <summary>
/// 导入excel的方法
/// </summary>
/// <param name="fc"></param>
/// <returns></returns>
public string excel(FormCollection fc)
{
try
{
string guid = Guid.NewGuid().ToString();
var file = Request.Files[0];
if (file == null ||
String.IsNullOrEmpty(file.FileName) ||
file.ContentLength == 0)
{
return "{\"code\":1,\"msg\":\"文件上传失败!\" ,\"data\":{\"src\":\"\"}}";
}
string filename = System.IO.Path.GetFileName(file.FileName);
string newName = buildFileName(guid, filename);
string virtualPath = String.Format("/upload/{0}", newName);
string path = Server.MapPath(virtualPath);
file.SaveAs(path);
return "{\"code\":0,\"msg\":\"文件上传成功!\" ,\"data\":{\"src\":\"\",\"filename\":\"" + filename + "\",\"newname\":\"" + newName + "\",\"size\":\"" + (file.ContentLength/1024) + "\"}}";
}
catch (Exception ex)
{
return "{\"code\":1,\"msg\":\"文件上传失败!\" ,\"data\":{\"src\":\"\"}}";
}
}
/// <summary>
/// 根据文件名称生产新的文件名称;
/// </summary>
/// <param name="filename"></param>
/// <returns></returns>
public static string buildFileName(string newname, string filename)
{
string postfix = filename.Substring(filename.LastIndexOf('.'));
string newName = newname + postfix;
return newName;
}
Controller /ImportTool/excel
/*excel导入方法*/
public string excel()
{
string newname = Request["newname"];
string virtualPath = String.Format("/upload/{0}", newname);
string path = Server.MapPath(virtualPath);
DataTable dt = ExcelHelper.exceltoTable(path);//excel中的数据在dt中
//导入到数据库示例
病虫害管理S dal = new 病虫害管理S();
病虫害管理 bean = new 病虫害管理();
string ret = "";
bool res = true;
for (int i = 0; i < dt.Rows.Count; i++)//行
{
DataRow row = dt.Rows[i];
bean.项目名称 = row[0].ToString();
bean.病虫害名称 = row[1].ToString();
bean.发生日期 = Convert.ToDateTime(row[2].ToString());
bean.具体位置 = row[3].ToString();
bean.危害植株 = row[4].ToString();
bean.危害面积 = row[5].ToString();
bean.防治措施 = row[6].ToString();
bean.Id = Guid.NewGuid().ToString();
bean.status = 0;
SUser user = (SUser)Session["USER"];
bean.Author = user.Uid == null ? "异常用户" : user.Uid.ToString();
bean.上传来源 = user.Name == null ? "异常用户" : user.Name.ToString(); ;
bean.序号 = "BC" + DateTime.Now.ToString("yyyyMMddHHmmssff");
bean.Created = DateTime.Now;
bean.orgId = user.OrgId;
res = dal.update(bean);
}
if (res)
ret = "{\"msg\":\"数据导入成功!\"}";
else
ret = "{\"msg\":\"数据导入异常!\"}";
return ret;
//示例结束
}
ExcelHelper.exceltoTable
using System;
using System.Data;
using System.Data.OleDb;
using System.IO;
namespace COMMON
{
/// <summary>
/// Excel导出工具类
/// </summary>
public static class ExcelHelper
{
public static string OledbConnString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};Extended Properties=Excel 8.0;";
public static DataTable exceltoTable(string path)
{
try
{
if (File.Exists(path))
{
//获取excel数据
DataTable dt1 = new DataTable("excelTable");
string strConn = string.Format(OledbConnString, path);
OleDbConnection conn = new OleDbConnection(strConn);
conn.Open();
DataTable dt = conn.GetSchema("Tables");
//判断excel的sheet页数量,查询第1页
if (dt.Rows.Count > 0)
{
string selSqlStr = string.Format("select * from [{0}]", dt.Rows[0]["TABLE_NAME"]);
OleDbDataAdapter oleDa = new OleDbDataAdapter(selSqlStr, conn);
oleDa.Fill(dt1);
}
conn.Close();
return dt1;
}
}
catch (Exception ex)
{
return null;
}
return null;
}
}
}
注:一列中不能同时存在文字和数字,不然读取不到
标签:return,string,Layui,excel,Excel,bean,mvc,ToString,res 来源: https://www.cnblogs.com/qqxx/p/15763902.html
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