AngularJS上传文件的示例代码

<div>
  <input id=\"fileUpload\" type=\"file\" />
  <button ng-click=\"uploadFile()\">上传</button>
</div>

    $scope.upload = function(){
      var form = new FormData();
      var file = document.getElementById(\"fileUpload\").files[0];
      form.append(\'file\', file);
      $http({
        method: \'POST\',
        url: \'/upload\',
        data: form,
        headers: {\'Content-Type\': undefined},
        transformRequest: angular.identity
      }).success(function (data) {
        console.log(\'upload success\');
      }).error(function (data) {
         console.log(\'upload fail\');
      })
    }

  @RequestMapping(\"/upload\")
  public void uploadFile(@RequestParam(value = \"file\" , required = true) MultipartFile file) {
    //deal with file
  }

  <div>
    <input id=\"fileUpload\" type=\"file\" />
    <button ng-click=\"ok()\">上传</button><br>
    <input ng-model=\"user.username\" />
    <input ng-model=\"user.password\" />
  </div>

  $scope.ok = function () {
    var form = new FormData();
    var file = document.getElementById(\"fileUpload\").files[0];  
    var user =JSON.stringify($scope.user);

    form.append(\'file\', file);
    form.append(\'user\',user);

    $http({
      method: \'POST\',
      url: \'/addUser\',
      data: form,
      headers: {\'Content-Type\': undefined},
      transformRequest: angular.identity
    }).success(function (data) {
      console.log(\'operation success\');
    }).error(function (data) {
      console.log(\'operation fail\');
    })
  };

  @RequestMapping(\"/upload\")
  public Map<String,  > upload(@RequestParam(value = \"file\") MultipartFile file, @RequestParam(value = \"user\", required = true) String user) {

    try (FileInputStream in = (FileInputStream) headImg.getInputStream();
       FileOutputStream out = new FileOutputStream(\"filePathAndName\")) {

      //将Json对象解析为UserModel对象
       Mapper  Mapper = new  Mapper();
      UserModel userModel =  Mapper.readValue(user, UserModel.class);

      //保存文件到filePathAndName
      int hasRead = 0;
      byte[] bytes = new byte[1024];
      while ((hasRead = in.read(bytes)) > 0) {
        out.write(bytes, 0, hasRead);
      }
    } catch (IOException e) {
      e.printStackTrace();
    }
  }