Spring文件上传 - 获取预期的MultipartHttpServletRequest：是否配置了MultipartResolver？错误

我正在尝试在我的Angular web应用程序中使用angular-file-upload来实现多文件上传功能。目前，前端功能可以正常工作，但每次上传尝试都会抛出一个java.lang.IllegalStateException,java.io.IOException]: java.lang.IllegalArgumentException: Expected MultipartHttpServletRequest: is a MultipartResolver configured?异常。\n上传控制器定义为\n

@Controller
@PropertySource("classpath:application.properties")
public class FileUploadController {
    @Resource
    private Environment env;
    @RequestMapping(value = "/fileupload", method = RequestMethod.POST)
    @ResponseBody
    public List fileUpload(@RequestParam("file") MultipartFile[] uploadFiles) throws IllegalStateException, IOException {
        //文件处理逻辑
    }
}

\n在我的AppConfig.java类中，我声明了bean\n

@Bean
public CommonsMultipartResolver commonsMultipartResolver(){
    CommonsMultipartResolver commonsMultipartResolver = new CommonsMultipartResolver();
    commonsMultipartResolver.setDefaultEncoding("utf-8");
    commonsMultipartResolver.setMaxUploadSize(50000000);
    return commonsMultipartResolver;
}

\n并通过以下方式启动web应用程序\n

@Override
public void onStartup(ServletContext servletContext) throws ServletException {
    AnnotationConfigWebApplicationContext ctx = new AnnotationConfigWebApplicationContext();
    ctx.register(AppConfig.class);
    servletContext.addListener(new ContextLoaderListener(ctx));
    ctx.setServletContext(servletContext);
    ctx.refresh();
    Dynamic servlet = servletContext.addServlet(SERVLET_NAME, new DispatcherServlet(ctx));
    servlet.addMapping("/");
    servlet.setLoadOnStartup(1);
    //servlet.setMultipartConfig(ctx.getBean(MultipartConfigElement.class));
}

\n我不认为这是由于我的Angular视图中缺少

Remote Address:192.168.33.10:80
Request URL:http://dev.jason.com/rest/fileupload
Request Method:POST
Status Code:500 Internal Server Error
Request Headers
  Accept:*/*
  Accept-Encoding:gzip,deflate
  Accept-Language:en-US,en;q=0.8
  Cache-Control:no-cache
  Connection:keep-alive
  Content-Length:415235
  Content-Type:multipart/form-data; boundary=----WebKitFormBoundaryBHlsldPQysTVpvwZ
  Host:dev.jason.com
  Origin:http://dev.jason.com
  Pragma:no-cache
  Referer:http://dev.jason.com/
  User-Agent:Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.122 Safari/537.36
Request Payload
   ------WebKitFormBoundaryBHlsldPQysTVpvwZ
   Content-Disposition: form-data; name="file"; filename="IMG_5072.jpg"
   Content-Type: image/jpeg
   ------WebKitFormBoundaryBHlsldPQysTVpvwZ--