在 Go 中按名称调用结构及其方法? [英] Call a Struct and its Method by name in Go?

问题描述

我在 http: 中找到了一个函数调用 MethodByName()//golang.org/pkg/reflect/#Value.MethodByName 但这不是我想要的！(也许是因为我不知道如何使用它......我找不到任何例子).我想要的是:

I have found a function call MethodByName() here http://golang.org/pkg/reflect/#Value.MethodByName but it's not exactly what I want! (maybe because I don't know how to use it ... I cannot find any example with it). What I want is:

type MyStruct struct {
//some feilds here
} 
func (p *MyStruct) MyMethod { 
    println("My statement."); 
} 

CallFunc("MyStruct", "MyMethod"); 
//print out "My statement." 

所以我想，首先我需要像 StructByName() 这样的东西，然后将它用于 MethodByName()，是吗！?

So I guess, first I need something like StructByName() and after that use it for MethodByName(), is that right!?

推荐答案

要调用对象的方法，首先使用 reflect.ValueOf.然后按名称查找方法，最后调用找到的方法.例如:

To call a method on an object, first use reflect.ValueOf. Then find the method by name, and then finally call the found method. For example:

package main

import "fmt"
import "reflect"

type T struct {}

func (t *T) Foo() {
    fmt.Println("foo")
}

func main() {
    var t T
    reflect.ValueOf(&t).MethodByName("Foo").Call([]reflect.Value{})
}

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