发现一个很简单、轻量的库，用来验证用户输入的字符串是否合法：
使用很方便：
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package main
import (
"regexp"
"strconv"
)
type validate struct {
i string
r bool
e string
}
func validator(u string) validate {
var n validate
n.i = u
n.r = true
n.e = ""
return n
}
func (s *validate) Required() *validate {
if s.r == true {
if s.i == "" || len(s.i) <= 0 {
s.r = false
s.e = "Is Required"
}
}
return s
}
func (s *validate) minLength(length int) *validate {
if s.r == true {
if len(s.i) < length {
s.r = false
s.e = "Minimum length " + strconv.Itoa(length) + " characters allowed"
}
}
return s
}
func (s *validate) maxLength(length int) *validate {
if s.r == true {
if len(s.i) > length {
s.r = false
s.e = "Maximum length " + strconv.Itoa(length) + " characters allowed"
}
}
return s
}
func (s *validate) isEmail() *validate {
if s.r == true {
re := regexp.MustCompile("^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$")
var match = re.MatchString(s.i)
if !match {
s.r = false
s.e = "invalid email"
}
}
return s
}
func (s *validate) oneLowerCase() *validate {
if s.r == true {
re := regexp.MustCompile("[a-z]+")
var match = re.MatchString(s.i)
if !match {
s.r = false
s.e = "does not contain atleast lowercase letter"
}
}
return s
}
func (s *validate) allLowerCase() *validate {
if s.r == true {
re := regexp.MustCompile("^[a-z]+$")
var match = re.MatchString(s.i)
if !match {
s.r = false
s.e = "does not contain lowercase letter"
}
}
return s
}
func (s *validate) oneUpperCase() *validate {
if s.r == true {
re := regexp.MustCompile("[A-Z]+")
var match = re.MatchString(s.i)
if !match {
s.r = false
s.e = "does not contain atleast one uppercase letter"
}
}
return s
}
func (s *validate) allUpperCase() *validate {
if s.r == true {
re := regexp.MustCompile("^[A-Z]+$")
var match = re.MatchString(s.i)
if !match {
s.r = false
s.e = "all letters are not uppercase"
}
}
return s
}
func (s *validate) oneNumber() *validate {
if s.r == true {
re := regexp.MustCompile("[0-9]+")
var match = re.MatchString(s.i)
if !match {
s.r = false
s.e = "does not contain atleast one numeric character"
}
}
return s
}
func (s *validate) isSpecialCharacter() *validate {
if s.r == true {
re := regexp.MustCompile("\\`|\\~|\\!|\\@|\\#|\\$|\\%|\\^|\\&|\\*|\\(|\\)|\\+|\\=|\\[|\\{|\\]|\\}|\\||\\|\\'|\\<|\\,|\\.|\\>|\\?|\\/|\"|\\;|\\:|\\s")
var match = re.MatchString(s.i)
if !match {
s.r = false
s.e = "does not contain atleast one special character"
}
}
return s
}
func (s *validate) check() bool {
return s.r
}
func main() {
newInput := validator("golangV$alidation")
println(newInput.Required().isSpecialCharacter().check())
}
检测项目
示例
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userInput := validator("blah!blah!blah!")
userInput.Required().oneLowerCase().check() // false
多重检测
1userInput.minLength(8).oneLowerCase().oneUpperCase().oneNumber().isSpecialCharacter().check()
Go-Validation 参考 https://github.com/hasanaliqureshi/Go-Validation