post或put 时，data若为{id:1,name:null} 这种带null值的对象，会报错Cannot convert undefined or null to object

[rockerneos]

defaults.headers.put['Content-Type'] = 'application/json'

Cannot convert undefined or null to object;
TypeError: Cannot convert undefined or null to object
at t.getOwnPropertyNames ()
at t.isEmptyObject