<p >上传文件： <input id="zfiles" type="file" name="file"/></ p>

<br />

<input type="button" value="上传" onclick="test()" />

function test() {

    var ts = document.getElementById("zfiles").files[0];

    var formData = new FormData();

    formData.append("file", ts);

     $.ajax({

          url: '/cwbase/service/mdm/ExcelIO.asmx/UploadExcel' ,

          type: 'POST',

          data: formData,

          //async: false,

          //cache: false,

          contentType: false,

          processData: false,

          success: function () {

              alert('success');

          },

          error: function () {

              alert('error');

          }

     });

}

[WebMethod]

public string UploadExcel()

{

       string result = "";

       string filePath = "E:\\";

       var file = HttpContext.Current.Request.Files;

        try

        {

            for (int i = ; i < file.Count; i++)

            {

                var f = file[i];

                 filePath = Path.Combine(filePath, f.FileName);

                  f.SaveAs(filePath);

            }

                result = "";

            }

            catch(Exception ex)

            {

                throw new Exception(ex.Message);

            }

            return result;

}