Golang 反射识别匿名字段技巧

type Person struct {
    Name string
    Age  int
}

type Employee struct {
    Person  // 匿名字段
    Salary int
    ID     string
}

func inspectStruct(v interface{}) {
    t := reflect.TypeOf(v)
    if t.Kind() == reflect.Ptr {
        t = t.Elem()
    }

    if t.Kind() != reflect.Struct {
        return
    }

    for i := 0; i < t.NumField(); i++ {
        field := t.Field(i)
        if field.Anonymous {
            fmt.Printf("匿名字段: %s, 类型: %s\n", field.Name, field.Type)
        } else {
            fmt.Printf("普通字段: %s, 类型: %s\n", field.Name, field.Type)
        }
    }
}

func walkStruct(t reflect.Type, path string) {
    if t.Kind() == reflect.Ptr {
        t = t.Elem()
    }
    for i := 0; i < t.NumField(); i++ {
        field := t.Field(i)
        currentPath := field.Name
        if path != "" {
            currentPath = path + "." + currentPath
        }

        fmt.Printf("字段路径: %s, 匿名: %v, 类型: %s\n", currentPath, field.Anonymous, field.Type)

        if field.Anonymous {
            walkStruct(field.Type, currentPath)
        }
    }
}

type Address struct {
    Street string `json:"street"`
    City   string `json:"city"`
}

type User struct {
    ID       int      `json:"id"`
    Address           // 匿名嵌入
    Email    string   `json:"email"`
}

jsonTag := field.Tag.Get("json")
if jsonTag != "" {
    fmt.Printf("JSON 标签: %s\n", jsonTag)
}