<input type="file" data-ng-model="file">

<uib-progress data-ng-show="progress">
  <uib-bar value="progress" type="{{type}}" data-ng-bind="progress + '%'"/>
</uib-progress>
<span class="err" data-ng-show="isShowMsg" data-ng-bind="Msg"></span>
<button class="btn btn-primary" type="button" data-ng-click="upload()">确认</button>

Upload.upload(
        {
          url: "",
          data: {
            file: file
          },
          method: 'post'
        }).then(function (res) {
          //这里是success方法
          $scope.isShowMsg = true;
          $scope.Msg = res.data.msg;
          if($scope.Msg == "导入数据不符合格式要求！")
          $scope.type = "progress-bar progress-bar-danger progress-bar-striped";//设置进度条样式
          else {
            $scope.type = "progress-bar progress-bar-success progress-bar-striped";
            $scope.progress = 100;//上传成功之后，将进度条设置为100
          }

        }, function (){
        //这里是error方法
        }, function (){
        //这里是progress方法
        $scope.type = "progress-bar progress-bar-info progress-bar-striped";

        $http({
        url:"",
        method: "get"
        }).success(function (res) {
            $scope.progress = res;//绑定进度条的值
          })
        });

public Map<String, Object> batchModify(InputStream inputStream,HttpSession session) {
    Map<String, Object> res = new HashMap<>();
    Workbook workbook = null;
    try {
      workbook = Util.createWorkbook(inputStream);
    } catch (InvalidFormatException | IOException e) {
      e.printStackTrace();
    }
    session.setAttribute("progress", 5);//解析成功后我将进度设置为5
    Sheet sheet = workbook.getSheetAt(0);

    Map<String, Object> roleWithPages = new HashMap<>();
    for (int i = 1; i <= sheet.getLastRowNum(); i++) {
      Row r = sheet.getRow(i);
      if (r == null || r.getCell(0) == null || r.getCell(1) == null)
        continue;
      Set<Page> pages = null;
      if (roleWithPages.get(r.getCell(0).toString()) == null) {
        pages = new HashSet<>();
      } else {
        pages = (Set<Page>) roleWithPages.get(r.getCell(0).toString());
      }
      Page p = new Page();
      p.setId(Math.round(r.getCell(1).getNumericCellValue()));
      pages.add(p);
      roleWithPages.put(r.getCell(0).toString(), pages);
      session.setAttribute("progress", 5 + i*90/sheet.getLastRowNum());
      //我将处理文件主体进度总量设置为90（5是加上解析部分的进度)
    }

    List<Role> roles = new ArrayList<>();
    for (String rolename : roleWithPages.keySet()) {
      Role role = repo.findByName(rolename);
      role.setPages((Set<Page>) roleWithPages.get(rolename));
      roles.add(role);
    }
    repo.save(roles);
    session.setAttribute("progress", 100);//保存之后将进度设置为100
    res.put("msg", "数据导入成功!");
    return res;
  }

public int getProgress(HttpServletRequest request){
    return (int) request.getSession().getAttribute("progress");
  }