LayUI上传图片

前端:

//上传图片
layui.use('upload', function () {
    var upload = layui.upload;

    //普通图片上传
    var uploadInst = upload.render({
        elem: '#test1'
      , url: 'Upload'
      , before: function (obj) {
          //预读本地文件示例，不支持ie8
          obj.preview(function (index, file, result) {
              $('#demo1').attr('src', result); //图片链接（base64）
          });
      }
      , done: function (res) {
          //如果上传失败
          if (res.code > 0) {
              return layer.msg('上传失败');
          }
          //上传成功
          $('#img').val(res.fileName);
      }
      , error: function () {
          //演示失败状态，并实现重传
          var demoText = $('#demoText');
          demoText.html('<span style="color: #FF5722;">上传失败</span> <a class="layui-btn layui-btn-xs demo-reload">重试</a>');
          demoText.find('.demo-reload').on('click', function () {
              uploadInst.upload();
          });
      }
    });
});

[HttpPost]
public ActionResult Upload()
{
try
{
var file = Request.Files[0];
var filecombin = file.FileName.Split('.');
if (file == null || String.IsNullOrEmpty(file.FileName) || file.ContentLength == 0 || filecombin.Length < 2)
{
return Json(new
{
fileid = 0,
src = "",
name = "",
msg = "上传出错 请检查文件名 或 文件内容"
});
}
//定义本地路径位置
string local = "Upload\" + System.DateTime.Now.ToString("yyyy-MM-dd");
string filePathName = string.Empty;
string localPath = Path.Combine(HttpRuntime.AppDomainAppPath, local);

var tmpName = Server.MapPath("~/Upload/" + System.DateTime.Now.ToString("yyyy-MM-dd") + "/");
var tmp = file.FileName;
var tmpIndex = 0;
//判断是否存在相同文件名的文件 相同累加1继续判断
while (System.IO.File.Exists(tmpName + tmp))
{
tmp = filecombin[0] + "_" + ++tmpIndex + "." + filecombin[1];
}

//不带路径的最终文件名
filePathName = tmp;

if (!System.IO.Directory.Exists(localPath))
System.IO.Directory.CreateDirectory(localPath);
string localURL = Path.Combine(local, filePathName);
file.SaveAs(Path.Combine(localPath, filePathName)); //保存图片（文件夹）
return Json(new
{
src = localURL.Trim().Replace("\", "/"),
name = Path.GetFileNameWithoutExtension(file.FileName), // 获取文件名不含后缀名
msg = "上传成功",
fileName = "~/Upload/" + System.DateTime.Now.ToString("yyyy-MM-dd") + "/" + filePathName//最终返回的路径及文件名称

});
}
catch { }
return Json(new
{
src = "",
name = "", // 获取文件名不含后缀名
msg = "上传出错",
fileName = ""
});
}