panic: reflect.Value.Interface: cannot return value obtained from unexported field or method
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原文
go的反射reflect访问struct结构注意问题
type Point struct { X int Y string}func main() { po := Point{3, "ddd"} s := reflect.ValueOf(&po).Elem() for i := 0; i < s.NumField(); i++ { f := s.Field(i) fmt.Printf(" %s %v \n", f.Type(), f.Interface()) }}输出：int 3 string ddd但是把Point里面X和Y改成小写的x，y；再执行程序的时候f.Interface会报错：
panic: reflect.Value.Interface: cannot return value obtained from unexported field or method
总结：
go语言里面struct里面变量如果大写则是public,如果是小写则是private的，private的时候通过反射不能获取其值
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