我需要将其中具有[] [] interface {}数组的复杂json数据解组。我想使用更多的抽象结构类型来解组,但Golang只能将其识别为[] interface {}。
示例代码:
// I want to use this, but not work
var r1 = struct {
Data map[string]interface{}
}{}
// Works well, but too complex if data nest much
var r2 = struct {
Data struct{
P1 int64
P2 [][]interface{}
}
}{}
jsonData := []byte(`{"data" :{"p1": 0, "p2":[["1", null], ["2", null] ]}}`)
json.Unmarshal (jsonData, &r1)
_, ok := r1.Data["p2"].([][]interface{})
fmt.Println(ok)
fmt.Println("======")
_, ok = r1.Data["p2"].([]interface{})
fmt.Println(ok)
fmt.Println("======")
json.Unmarshal (jsonData, &r2)
fmt.Println(r2.Data.P2)
输出:
false
======
true
======
[[1 <nil>] [2 <nil>]]