golang校验结构体字段的库validator的使用

package scripts_stroage

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

// 参考博客：
// https://juejin.cn/post/6900375680358285325
// https://www.cnblogs.com/jiujuan/p/13823864.html

type VIPUser struct {
    // 1 <= len <= 20，不能为空
    Name string `json:"name" validate:"required,min=1,max=20"`
    // 18 <= age <= 80
    Age int `json:"age" validate:"required,min=18,max=80"`
    // 1<= len <= 64
    Email string `json:"email" validate:"min=1,max=64"`
}

func TestTV1(t *testing.T) {
    // 0:
    vip0 := VIPUser{
        Name:  "naruto",
        Age:   22,
        Email: "123@qq.com",
    }
    va0 := validator.New()
    err0 := va0.Struct(vip0)
    if err0 != nil {
        fmt.Println("err0: ", err0) // 输入合法没有打印
    }

    // 1:
    vip1 := VIPUser{
        Name:  "whw",
        Email: "www.123@qq.com",
    }
    va1 := validator.New()
    err1 := va1.Struct(vip1)
    if err1 != nil {
        fmt.Println("err1: ", err1) // err1:  Key: 'VIPUser.Age' Error:Field validation for 'Age' failed on the 'required' tag
    }

    // 2:
    vip2 := VIPUser{
        Name:  "rrrrrrrrrrrrrrrrrrrrrrr", // name不合法
        Age:   23,
        Email: "", // email不合法
    }
    va2 := validator.New()
    err2 := va2.Struct(vip2)
    if err2 != nil {
        fmt.Println("err2: ", err2)
        /*
            err2:  Key: 'VIPUser.Name' Error:Field validation for 'Name' failed on the 'max' tag
            Key: 'VIPUser.Email' Error:Field validation for 'Email' failed on the 'min' tag
        */
    }

    // 3:
    vip3 := VIPUser{
        Name:  "whw",
        Age:   555, // age不合法
        Email: "123@qq.com",
    }
    va3 := validator.New()
    err3 := va3.Struct(vip3)
    if err3 != nil {
        fmt.Println("err3: ", err3) // err3:  Key: 'VIPUser.Age' Error:Field validation for 'Age' failed on the 'max' tag
    }

}

参考博客：
https://juejin.cn/post/6900375680358285325
https://www.cnblogs.com/jiujuan/p/13823864.html