如何在Golang中将json对象数组插入mongodb

Question

My json looks like the following,

[
  {
    "key1": 1,
    "key2": "val2"
  },
  {
    "key1": 2,
    "key2": "val2"
  }
]

This json comes in string format and I want the objects in the json array to be inserted as individual records in mongodb. I referred to https://labix.org/mgo but wasn't able to find enough examples on the above use-case. Appreciate your thoughts in finding a solution.