在from表單裡面添加了上傳附件的程式碼

<tr>
                <td height="50" width="15%" align="center">上傳檔案</td>
                <td width="35%" valign="middle">
                    <div class="upload" style="position: relative;">
                    <!-- <input type="file" name="multipartfile" id="textfield" class="validate[required,funcCall[judgeFileType]] upload_input"> -->
					      <input type="file" name="multipartfile" id="multipartfile" class="upload_input">
					      <div class="upload_text"></div>
					      <div class="upload_text_a"></div>
					      <a class="upload_btn" href="javascript:;">上傳</a>
					      <a class="upload_delete" href="javascript:;"></a>
					 </div>
                </td>
            </tr>
 

後臺如下編寫，在前臺沒有新增附件，結果提交表單到後臺時，一直提示“丟失請求引數”

@RequestMapping(value = "/saveRecord", method = RequestMethod.POST, produces = "application/json; charset=utf-8")
	public AjaxMessage saveRecord(@RequestParam("multipartfile") MultipartFile multipartfile) {
			//.....
			}

很鬱悶，網上好多說是Spring的配置問題，但是改了配置還是不能解決，把後臺程式碼改成下面這樣，解決了。如果添加了附件，在multipartfile裡面會有，如果沒有新增附件，在陣列為空

@RequestMapping(value = "/saveRecord", method = RequestMethod.POST, produces = "application/json; charset=utf-8")
	public AjaxMessage saveRecord(@RequestParam("multipartfile") MultipartFile[] multipartfile) {
			//....
			}