|
go-playground / validator提供了以下校验：
| Tag | Description |
|---|
| eqcsfield | Field Equals Another Field (relative) | | eqfield | Field Equals Another Field | | fieldcontains | NOT DOCUMENTED IN doc.go | | fieldexcludes | NOT DOCUMENTED IN doc.go | | gtcsfield | Field Greater Than Another Relative Field | | gtecsfield | Field Greater Than or Equal To Another Relative Field | | gtefield | Field Greater Than or Equal To Another Field | | gtfield | Field Greater Than Another Field | | ltcsfield | Less Than Another Relative Field | | ltecsfield | Less Than or Equal To Another Relative Field | | ltefield | Less Than or Equal To Another Field | | ltfield | Less Than Another Field | | necsfield | Field Does Not Equal Another Field (relative) | | nefield | Field Does Not Equal Another Field |
Network:
| Tag | Description |
|---|
| cidr | Classless Inter-Domain Routing CIDR | | cidrv4 | Classless Inter-Domain Routing CIDRv4 | | cidrv6 | Classless Inter-Domain Routing CIDRv6 | | datauri | Data URL | | fqdn | Full Qualified Domain Name (FQDN) | | hostname | Hostname RFC 952 | | hostname_port | HostPort | | hostname_rfc1123 | Hostname RFC 1123 | | ip | Internet Protocol Address IP | | ip4_addr | Internet Protocol Address IPv4 | | ip6_addr | Internet Protocol Address IPv6 | | ip_addr | Internet Protocol Address IP | | ipv4 | Internet Protocol Address IPv4 | | ipv6 | Internet Protocol Address IPv6 | | mac | Media Access Control Address MAC | | tcp4_addr | Transmission Control Protocol Address TCPv4 | | tcp6_addr | Transmission Control Protocol Address TCPv6 | | tcp_addr | Transmission Control Protocol Address TCP | | udp4_addr | User Datagram Protocol Address UDPv4 | | udp6_addr | User Datagram Protocol Address UDPv6 | | udp_addr | User Datagram Protocol Address UDP | | unix_addr | Unix domain socket end point Address | | uri | URI String | | url | URL String | | url_encoded | URL Encoded | | urn_rfc2141 | Urn RFC 2141 String |
Strings:
| Tag | Description |
|---|
| alpha | Alpha Only | | alphanum | Alphanumeric | | alphanumunicode | Alphanumeric Unicode | | alphaunicode | Alpha Unicode | | ascii | ASCII | | contains | Contains | | containsany | Contains Any | | containsrune | Contains Rune | | lowercase | Lowercase | | multibyte | Multi-Byte Characters | | number | NOT DOCUMENTED IN doc.go | | numeric | Numeric | | printascii | Printable ASCII | | startswith | Starts With | | uppercase | Uppercase |
Format:
| Tag | Description |
|---|
| base64 | Base64 String | | base64url | Base64URL String | | btc_addr | Bitcoin Address | | btc_addr_bech32 | Bitcoin Bech32 Address (segwit) | | datetime | Datetime | | email | E-mail String | | eth_addr | Ethereum Address | | hexadecimal | Hexadecimal String | | hexcolor | Hexcolor String | | hsl | HSL String | | hsla | HSLA String | | html | HTML Tags | | html_encoded | HTML Encoded | | isbn | International Standard Book Number | | isbn10 | International Standard Book Number 10 | | isbn13 | International Standard Book Number 13 | | json | JSON | | latitude | Latitude | | longitude | Longitude | | rgb | RGB String | | rgba | RGBA String | | ssn | Social Security Number SSN | | uuid | Universally Unique Identifier UUID | | uuid3 | Universally Unique Identifier UUID v3 | | uuid3_rfc4122 | Universally Unique Identifier UUID v3 RFC4122 | | uuid4 | Universally Unique Identifier UUID v4 | | uuid4_rfc4122 | Universally Unique Identifier UUID v4 RFC4122 | | uuid5 | Universally Unique Identifier UUID v5 | | uuid5_rfc4122 | Universally Unique Identifier UUID v5 RFC4122 | | uuid_rfc4122 | Universally Unique Identifier UUID RFC4122 |
Comparisons:
| Tag | Description |
|---|
| eq | Equals | | gt | Greater than | | gte | Greater than or equal | | lt | Less Than | | lte | Less Than or Equal | | ne | Not Equal |
除此之前，还可以自定义校验规则，示例代码如下：
package main
import (
"fmt"
"github.com/go-playground/validator"
"github.com/satori/go.uuid"
"unicode/utf8"
)
type UserInfo struct {
Id string `validate:"uuid"` //UUID 类型
Name string `validate:"checkName"` //自定义校验
Age uint8 `validate:"min=0,max=130"` // 0<=Age<=130
}
//自定义校验函数
func checkName(f validator.FieldLevel) bool { // FieldLevel contains all the information and helper functions to validate a field
count := utf8.RuneCountInString(f.Field().String()) //通过utf8编码，获取字符串长度
if count >= 2 && count <= 12 {
return true
}
return false
}
func main() {
validate := validator.New()
//自定义函数checkName与 struct tag 关联起来
err := validate.RegisterValidation("checkName", checkName)
if err!=nil {
fmt.Println("注册失败！")
return
}
//UUID引用：satori/go.uuid；添加方法：go get github.com/satori/go.uuid
uuid := uuid.Must(uuid.NewV1()) //通过satori/go.uuid，快速生成UUID
fmt.Println("UUID:",uuid)
user := UserInfo{
Id: uuid.String(),
Name: "jiangzhou",
Age: 223,
}
err=validate.Struct(user)
if err!=nil {
for _,e:=range err.(validator.ValidationErrors){
fmt.Println("错误字段：",e.Field())
fmt.Println("错误值：",e.Value())
fmt.Println("错误tag：",e.Tag())
}
return
}
fmt.Println("校验成功")
}
运行效果：
了解更多Go语言知识：https://study.163.com/course/introduction/1210620804.htm | 
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