grape api参数为array

https://github.com/ruby-grape/grape

https://github.com/ruby-grape/grape#param

requires :subject_id_list, type: Array[String], allow_blank: false

请求的时候只能依次请求

http://111.11.1.1:1100/api/v1/ats?subject_id_list[]=1&subject_id_list[]=2