仅仅是为了学习go语言中的反射。
package main
import (
"errors"
"fmt"
"reflect"
)
func Call(m map[string]interface{}, name string, params ...interface{}) ([]reflect.Value,error) {
_, found := m[name]
if !found {
return nil, errors.New("map do not contains key ...")
}
fv := reflect.ValueOf(m[name])
if fv.Kind() != reflect.Func {
return nil, errors.New("the value of key is not a function")
}
if len(params) != fv.Type().NumIn() {
return nil, errors.New("argument passed in does not match the function")
}
in := make([]reflect.Value, len(params))
// for i := 0; i < len(params); i++ {
// in[i] = reflect.ValueOf(params[i])
// }
for i, param := range params {
in[i] = reflect.ValueOf(param)
}
return fv.Call(in), nil
}
func test1(name string) {
fmt.Printf("hello,%s
", name)
}
func test2(name string, age int) {
fmt.Printf("hello,my name is %s ,%d years old", name, age)
}
func main() {
m := make(map[string]interface{})
m["test1"] = test1
m["test2"] = test2
result, err := Call(m, "test2", "hupeng", 12)
if err != nil {
panic(err)
}
fmt.Println(result)
}