如何在Golang中使用reflect判断字段是否导出_Golang reflect字段导出判断方法汇总

package main

import (
    "fmt"
    "reflect"
    "unicode"
)

type Person struct {
    Name string // 导出字段
    age  int    // 未导出字段
}

func isExported(field reflect.StructField) bool {
    return unicode.IsUpper(rune(field.Name[0]))
}

func main() {
    p := Person{}
    t := reflect.TypeOf(p)

    for i := 0; i < t.NumField(); i++ {
        field := t.Field(i)
        fmt.Printf("字段: %s, 是否导出: %t\n", field.Name, isExported(field))
    }
}

字段: Name, 是否导出: true
字段: age, 是否导出: false

func isFieldExported(field reflect.StructField) bool {
    return field.PkgPath == ""
}

for i := 0; i < t.NumField(); i++ {
    field := t.Field(i)
    exported := field.PkgPath == ""
    fmt.Printf("字段: %s, 导出: %t, 包路径: %q\n", field.Name, exported, field.PkgPath)
}

func inspectStruct(t reflect.Type) {
    for i := 0; i < t.NumField(); i++ {
        field := t.Field(i)
        if field.Anonymous {
            // 嵌入结构，递归检查
            inspectStruct(field.Type)
        } else {
            fmt.Printf("字段: %s, 导出: %t\n", field.Name, field.PkgPath == "")
        }
    }
}

if field.PkgPath != "" {
    continue // 跳过未导出字段
}