vscode restclient上传文件

尝试了几次，终于成功了。

### 文件上传
POST http://localhost:8080/emkt-platform-content/api/fileupload/importWjxResultList
Content-Type: multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW

------WebKitFormBoundary7MA4YWxkTrZu0gW
Content-Disposition: form-data; name="file"; filename="228174514_0_腰椎功能障碍自评量表_5_5.xlsx"

< C:/Users/FosunHealth/Desktop/228174514_0_腰椎功能障碍自评量表_5_5.xlsx
------WebKitFormBoundary7MA4YWxkTrZu0gW--