Angularjs IE9中的上载文件无法使用ng file Upload+；Spring MVC+；OAuth2.0

我对AngularJS一无所知，非常感谢你的帮助

我正在尝试实现一个文件上传页面。它非常简单，用户选择文件并按下上载按钮，它必须上载到后端，这是一个Spring MVC REST web服务。我正试着用它

这是我的前端代码：

<form name="myForm">
   <input type="file" ngf-select ng-model="picFile" name="file
      accept="application/pdf" ngf-max-size="2MB" required 
      ngf-model-invalid="errorFiles">
   <i ng-show="myForm.file.$error.required">*required</i><br>
   <i ng-show="myForm.file.$error.maxSize">File too large
    {{errorFiles[0].size / 1000000|number:1}}MB: max 2M</i>
<button ng-disabled="!myForm.$valid" ng-click="uploadFiles(picFile)">Submit</button>

我的后端：

@RequestMapping(value = "/proposals/upload",method = RequestMethod.POST)
@Timed
public ResponseEntity<TemporaryProposal> 
   uploadProposal(@RequestParam("file") MultipartFile agreementFile){

[DEBUG] com.iocs.portal.aop.logging.LoggingAspect - Enter: org.springframework.boot.actuate.audit.AuditEventRepository.add() with argument[s] = [AuditEvent [timestamp=Tue Mar 01 08:53:23 EST 2016, principal=anonymousUser, type=AUTHORIZATION_FAILURE, data={message=Access is denied, type=org.springframework.security.access.AccessDeniedException}]]
[DEBUG] com.iocs.portal.aop.logging.LoggingAspect - Exit: org.springframework.boot.actuate.audit.AuditEventRepository.add() with result = null
[DEBUG] com.iocs.portal.security.Http401UnauthorizedEntryPoint - Pre-authenticated entry point called. Rejecting access

从后端：

@RequestMapping(value = "/proposals/upload",method = RequestMethod.POST)
@Timed
public ResponseEntity<TemporaryProposal> 
   uploadProposal(@RequestParam("file") MultipartFile agreementFile){

[DEBUG] com.iocs.portal.aop.logging.LoggingAspect - Enter: org.springframework.boot.actuate.audit.AuditEventRepository.add() with argument[s] = [AuditEvent [timestamp=Tue Mar 01 08:53:23 EST 2016, principal=anonymousUser, type=AUTHORIZATION_FAILURE, data={message=Access is denied, type=org.springframework.security.access.AccessDeniedException}]]
[DEBUG] com.iocs.portal.aop.logging.LoggingAspect - Exit: org.springframework.boot.actuate.audit.AuditEventRepository.add() with result = null
[DEBUG] com.iocs.portal.security.Http401UnauthorizedEntryPoint - Pre-authenticated entry point called. Rejecting access

---

我通过从前端发送认证参数和请求来解决这个问题。当我使用Auth2身份验证时，在请求中包含令牌是可以的。

似乎您的服务器拒绝了请求并发送了一个授权错误。首先让它对chrome起作用，然后你就会更好地了解IE9的问题所在