在GoLang中将字符串转换为func类型

Question

I have a string which is the name of a function in GoLang. I want to treat them as function. How should I do this? I tried to achieve it through reflect.* but I didn't find a valid path for my purpose.

I get the name fo handlers in a JSON file, and I want to execute those handlers. Something like this:

{
  "students/show" : "ShowStudents",
  "students/add" : "AddStudents"
}

Then I want to execute ShowStudents(), but don't know how to treat it like a variable of type func

Answer 1

establish a mapping between the keys in the json file and the functions, then use that to call the functions as they appear in the json

package main

import (
    "encoding/json"
    "fmt"
)

func AddStudents() {
    fmt.Println("woo")
}

func ShowStudents() {
    fmt.Println("lots of students")
}

func main() {
    js := `{
  "students/show" : "ShowStudents",
  "students/add" : "AddStudents"
}`

    lookup := make(map[string]string)
    json.Unmarshal([]byte(js), &lookup)
    dispatch := make(map[string]func())
    dispatch["students/show"] = ShowStudents
    dispatch["students/add"] = AddStudents

    for v, _ := range lookup {
        print(v)
        dispatch[v]()
    }
}