$(document).ready(function () {
  $(document).off('click',sendFile).on('click','.upload-it',sendFile);
  $(document).off('click',selectFile).on('click','.select-file',selectFile);
  $(document).off('change',showMsg).on('change','.true-select',showMsg)
})
function sendFile() {
  var fileData =new FormData();
  var Url4='testfrom.jsp';
  var file=$('.true-select').files;
  if($('.true-select').val()=='')
  {
    alert("请选择文件");
    return;
  }
  fileData.append("file",file);
  $.ajax({
    type:"post",
    url:Url4,
    date:fileData,
    processData:false,
    contentType:false,
    success:function (data,status) {
      if(status=="success")
      {
        alert("上传成功");
      }
    }
  })
}
function selectFile() {
  $('.true-select').click();
}
function showMsg() {
  var file=$(this).val();
  var filename=getmsg(file);
  function getmsg(file) {
    var index=file.lastIndexOf("\\");
    return file.substring(index+1);
  }
  $('.file-msg').css("opacity","1");
  $('.file-name').html(filename);
  $('.file-msg').css("left","340px");
  $('.file-input-frame').css("right","20px")
  $('.select-file').html("重新选择");
  $('.select-file').css("background-color","#eb4548");
}