go - 从 Golang 结构生成序列化器

Question

我有一个这样的结构，

type Example struct{
    a int
    b int
    c string
}

func Calculate(){
    obj := Example{1,2,"lahmacun"}
    // do something in here
    // I have to get this result as a string: "[a=1,b=2,c=lahmacun]"
    // Example can be anything. which means we dont know anything about struct. Just we know its a struct.
}

我想做一个序列化器，但我做不到。

注意:在 nodejs 中我们有 for...in 循环。这很容易。但在 golang 中，一切对我来说都非常不同。

Answer 1

我找到了答案。感谢@mkopriva <3

func PKIStringify(v interface{}) (res string) {
    rv := reflect.ValueOf(v)
    num := rv.NumField()
    for i := 0; i < num; i++ {
        fv := rv.Field(i)
        st := rv.Type().Field(i)
        fmt.Println(fv.Kind())
        res += st.Name + "="
        switch fv.Kind() {
        case reflect.String:
            res += fv.String()
        case reflect.Int:
            res += fmt.Sprint(fv.Int())
        case reflect.Struct:
            res += PKIStringify(fv.Interface())
        }
        if i != num-1 {
            res += ","
        }
    }

    return "[" + res + "]"
}