Ngfileupload upload files to the Java RESTful interface: Required ' file ' not present problem resolution

First, attach the error front error code:

	<button class= "btn btn-primary" >
        	<i class= "fa fa-upload m-r-sm" ></i> uploading file <div
        	style= " Position:absolute; top:0px; left:0px; width:150px; height:57px; Overflow:hidden; Bottom:auto; Right:auto; " >
       		   <input data-ng-disabled= "false"  class= "Form-control" type= "file" name= "file"
                	 ngf-select= " Uploadfiles ($file) "ng-model=" UploadFile "ngf-max-size=" 1.1GB "placeholder=" "style="
                 	height:47px; Position:absolute;opacity:0;cursor:pointer "required>
       		 </div>
      </button>

Back-end RESTful interface part code:

@RequestMapping (value = "/upload", method = requestmethod.post, consumes = mediatype.multipart_form_data_value)
    Public uploadsuccess Uploadexcel (@RequestParam ("file") multipartfile files) {

			.....

}

I've been tuned for half a day and always error:

Always say that the file parameter does not exist, the problem is mainly caused by the name= "file" inside the HTML code, just change it to the other value that is not called file.

The above problem is solved, but if I need to upload multiple files to Multipartfile to the array ng-fileupload upload file stream, the final solution is injected httpserveletrquest A file stream is obtained directly from this part to get the file.

    @RequestMapping (value = "/upload", method = requestmethod.post, consumes = mediatype.multipart_form_data_value)
    Public uploadsuccess Uploadexcel (HttpServletRequest request) {

        list<part> Listpart = new Arraylist<> () ;
        try {
            iterator its = request.getparts (). iterator ();
            while (Its.hasnext ()) {Part I
                = (part) its.next ();
                Listpart.add (part);
            }
            Logger.info ("File number ====>" + listpart.size ());
        } catch (IOException e) {
            e.printstacktrace ();
        } catch (Servletexception e) {
            e.printstacktrace ();
        } Return
        uploadservice.xlsxexceldeal (Listpart);
    }

Put the code, I was so resolved, I hope you can comment on the discussion, the younger brother is all ears.