fermata 看起来可能是您正在寻找什么.在github页面上:

fermata looks like it might be what you're looking for. From the github page:

fermata.json("http://example.com/some/action").post({
  'Content-Type':"multipart/form-data"
}, {
  fileField: form.input.file || {data:nodeBuffer, name:"", type:""}
}, callback)