The interface reports Missing grant type

Error details:

 

 Reason: Missing form parameter: grant_type

However, if the parameter is passed and an error is still reported, it means that the passed data format is wrong, and the data format needs to be modified.

Solution:

The first step: set the data format

It is best to set the Content-Type to dynamic, and do not globally modify the encapsulated request to avoid affecting requests from other interfaces.

headers: {
  'Content-Type':'application/x-www-form-urlencoded'
},

Step 2: Convert the parameters after the url request address into an object

• install querystring
  npm install querystring or yarn add querystring

• import querystring

• Convert the passed parameter data into an object
  data: queryString.stringify(params)