Spring Boot+AngularJS+BootStrap实现进度条示例代码

<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");  }