如何像 Javascript 的 Joi 一样验证 Go 对象数据？

Question

我使用Joi在 JavaScript 中执行对象模式和数据验证。在 Golang 中，我知道如何进行模式验证，但我如何进行数据验证？Golang 是否有 Joi 等价物？我知道 Godog，但它还没有达到 1.0。

Answer 1

尝试 ozzo-validation 

package main

import (

    "fmt"

    "regexp"

    "github.com/go-ozzo/ozzo-validation"

    "github.com/go-ozzo/ozzo-validation/is"

)

type Address struct {

    Street string

    City   string

    State  string

    Zip    string

}

func (a Address) Validate() error {

    return validation.ValidateStruct(&a,

        // Street cannot be empty, and the length must between 5 and 50

        validation.Field(&a.Street, validation.Required, validation.Length(5, 50)),

        // City cannot be empty, and the length must between 5 and 50

        validation.Field(&a.City, validation.Required, validation.Length(5, 50)),

        // State cannot be empty, and must be a string consisting of two letters in upper case

        validation.Field(&a.State, validation.Required, validation.Match(regexp.MustCompile("^[A-Z]{2}$"))),

        // State cannot be empty, and must be a string consisting of five digits

        validation.Field(&a.Zip, validation.Required, validation.Match(regexp.MustCompile("^[0-9]{5}$"))),

    )

}

func main() {

    a := Address{

        Street: "123",

        City:   "Unknown",

        State:  "Virginia",

        Zip:    "12345",

    }

    err := a.Validate()

    fmt.Println(err)

    // Output:

    // Street: the length must be between 5 and 50; State: must be in a valid format.

}