golang使用类型映射[字符串]接口{}为对象设置新值

可以将字符串和值保持设置为字符串类型

package main

import (
    "fmt"
    "log"
)

func main() {

    var bdoc interface{}
    aMap, ok := bdoc.(map[string]interface{})
    if !ok {
       log.Fatalf("Failed to cast %T", bdoc)
    }
    //depending on JSON settting pk number may have json.Numbe or float64
    fmt.Prinf("%v  %T\n", aMap["pk"], aMap["pk"])
   aMap["pk"] ="1234"
    fmt.Prinf("%v  %T\n", aMap["pk"], aMap["pk"])

}