机遇屋-golang之数据验证validator

golang之数据验证validator

作者：ych

#### 使用示例
```
package main

import (
	"fmt"
	"github.com/go-playground/validator/v10"
)

type Users struct {
	Phone   string `form:"phone" json:"phone" validate:"required"`
	Passwd   string `form:"passwd" json:"passwd" validate:"required,max=20,min=6"`
	Code   string `form:"code" json:"code" validate:"required,len=6"`
}

func main() {

users := &Users{
		Phone:      "1326654487",
		Passwd:       "123",
		Code:            "123456",
	}
	validate := validator.New()
	err := validate.Struct(users)
	if err != nil {
		for _, err := range err.(validator.ValidationErrors) {
			fmt.Println(err)//Key: 'Users.Passwd' Error:Field validation for 'Passwd' failed on the 'min' tag
			return
		}
	}
	return
}

```

#### 示例
```
type UserReg struct {
	Passwd   string `form:"passwd" json:"passwd" validate:"required,max=20,min=6"`
	Repasswd   string `form:"repasswd" json:"repasswd" validate:"required,max=20,min=6,eqfield=Passwd"`
}
```

#### 自定义验证类型
```
package main

import (
	"fmt"
	"github.com/go-playground/validator/v10"
)

type Users struct {
	Name   string `form:"name" json:"name" validate:"required,CustomValidationErrors"`//包含自定义函数
	Age   uint8 `form:"age" json:"age" validate:"required,gt=18"`
	Passwd   string `form:"passwd" json:"passwd" validate:"required,max=20,min=6"`
	Code   string `form:"code" json:"code" validate:"required,len=6"`
}

func main() {

users := &Users{
		Name:      "admin",
		Age:       12,
		Passwd:    "123",
		Code:      "123456",
	}
	validate := validator.New()
	//注册自定义函数
	_=validate.RegisterValidation("CustomValidationErrors", CustomValidationErrors)
	err := validate.Struct(users)
	if err != nil {
		for _, err := range err.(validator.ValidationErrors) {
			fmt.Println(err)//Key: 'Users.Name' Error:Field validation for 'Name' failed on the 'CustomValidationErrors' tag
			return
		}
	}
	return
}

func CustomValidationErrors(fl validator.FieldLevel) bool {
return fl.Field().String() != "admin"
}
```

评论区

先去登录