Golang动态调用方法

main.go

package main

import (
	"lenu/call"
	"reflect"
)


type FuncCollection map[string]reflect.Value

func main() {
	_, _ = CallFunc("Hello", "执行Hello方法")
	_, _ = CallFunc("World", "执行World方法")
}

func CallFunc(tableName string, args ... interface{}) (result []reflect.Value, err error) {
	var router call.Routers
	FuncMap := make(FuncCollection, 0)
	rf := reflect.ValueOf(&router)
	rft := rf.Type()
	funcNum := rf.NumMethod()
	for i := 0; i < funcNum; i ++ {
		mName := rft.Method(i).Name
		FuncMap[mName] = rf.Method(i)
	}
	parameter := make([]reflect.Value, len(args))
	for k, arg := range args {
		parameter[k] = reflect.ValueOf(arg)
	}
	result = FuncMap[tableName].Call(parameter)
	return
}

package call:

router.go:

package call

type Routers struct {
}

hello.go

package call

import "log"

func (router *Routers) Hello(args ...interface{}) bool {
	log.Println(args[0])
	return true
}

world.go

package call

import "log"

func (router *Routers) World(args ...interface{}) bool {
	log.Println(args[0])
	return true
}

 

go run main.go会通过反射去调用Hello,World方法