base64Captcha快速生成base64編碼圖片驗(yàn)證碼字符串
支持多種樣式,算術(shù),數(shù)字,字母,混合模式,語音模式.
Base64是網(wǎng)絡(luò)上最常見的用于傳輸8Bit字節(jié)代碼的編碼方式之一拂檩。Base64編碼可用于在HTTP環(huán)境下傳遞較長(zhǎng)的標(biāo)識(shí)信息, 直接把base64當(dāng)成是字符串方式的數(shù)據(jù)就好了
減少了http請(qǐng)求睹逃；數(shù)據(jù)就是圖片；
為APIs微服務(wù)而設(shè)計(jì)
為什么base64圖片 for RESTful 服務(wù)
Data URIs 支持大部分瀏覽器,IE8之后也支持.
小圖片使用base64響應(yīng)對(duì)于RESTful服務(wù)來說更便捷
godoc文檔
在線Demo Playground Powered by Vuejs+elementUI+Axios
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wav file
安裝golang包
go get -u github.com/mojocn/base64Captcha
創(chuàng)建圖像驗(yàn)證碼
import "github.com/mojocn/base64Captcha"
func demoCodeCaptchaCreate() {
//config struct for digits
//數(shù)字驗(yàn)證碼配置
var configD = base64Captcha.ConfigDigit{
Height: 80,
Width: 240,
MaxSkew: 0.7,
DotCount: 80,
CaptchaLen: 5,
}
//config struct for audio
//聲音驗(yàn)證碼配置
var configA = base64Captcha.ConfigAudio{
CaptchaLen: 6,
Language: "zh",
}
//config struct for Character
//字符,公式,驗(yàn)證碼配置
var configC = base64Captcha.ConfigCharacter{
Height: 60,
Width: 240,
//const CaptchaModeNumber:數(shù)字,CaptchaModeAlphabet:字母,CaptchaModeArithmetic:算術(shù),CaptchaModeNumberAlphabet:數(shù)字字母混合.
Mode: base64Captcha.CaptchaModeNumber,
ComplexOfNoiseText: base64Captcha.CaptchaComplexLower,
ComplexOfNoiseDot: base64Captcha.CaptchaComplexLower,
IsShowHollowLine: false,
IsShowNoiseDot: false,
IsShowNoiseText: false,
IsShowSlimeLine: false,
IsShowSineLine: false,
CaptchaLen: 6,
}
//create a audio captcha.
idKeyA, capA := base64Captcha.GenerateCaptcha("", configA)
//以base64編碼
base64stringA := base64Captcha.CaptchaWriteToBase64Encoding(capA)
//create a characters captcha.
idKeyC, capC := base64Captcha.GenerateCaptcha("", configC)
//以base64編碼
base64stringC := base64Captcha.CaptchaWriteToBase64Encoding(capC)
//create a digits captcha.
idKeyD, capD := base64Captcha.GenerateCaptcha("", configD)
//以base64編碼
base64stringD := base64Captcha.CaptchaWriteToBase64Encoding(capD)
fmt.Println(idKeyA, base64stringA, "\n")
fmt.Println(idKeyC, base64stringC, "\n")
fmt.Println(idKeyD, base64stringD, "\n")
}
驗(yàn)證圖像驗(yàn)證碼
import "github.com/mojocn/base64Captcha"
func verfiyCaptcha(idkey,verifyValue string){
verifyResult := base64Captcha.VerifyCaptcha(idkey, verifyValue)
if verifyResult {
//success
} else {
//fail
}
}
使用golang搭建API服務(wù)
// example of HTTP server that uses the captcha package.
package main
import (
"encoding/json"
"fmt"
"github.com/mojocn/base64Captcha"
"log"
"net/http"
)
//ConfigJsonBody json request body.
type ConfigJsonBody struct {
Id string
CaptchaType string
VerifyValue string
ConfigAudio base64Captcha.ConfigAudio
ConfigCharacter base64Captcha.ConfigCharacter
ConfigDigit base64Captcha.ConfigDigit
}
var configC = base64Captcha.ConfigCharacter{
Height: 60,
Width: 240,
Mode: 0,
ComplexOfNoiseText: 0,
ComplexOfNoiseDot: 0,
IsShowHollowLine: false,
IsShowNoiseDot: false,
IsShowNoiseText: false,
IsShowSlimeLine: false,
IsShowSineLine: false,
CaptchaLen: 6,
}
// base64Captcha create http handler
func generateCaptchaHandler(w http.ResponseWriter, r *http.Request) {
//parse request parameters
//接收客戶端發(fā)送來的請(qǐng)求參數(shù)
decoder := json.NewDecoder(r.Body)
var postParameters ConfigJsonBody
err := decoder.Decode(&postParameters)
if err != nil {
log.Println(err)
}
defer r.Body.Close()
//create base64 encoding captcha
//創(chuàng)建base64圖像驗(yàn)證碼
var config interface{}
switch postParameters.CaptchaType {
case "audio":
config = postParameters.ConfigAudio
case "character":
config = postParameters.ConfigCharacter
default:
config = postParameters.ConfigDigit
}
captchaId, digitCap := base64Captcha.GenerateCaptcha(postParameters.Id, config)
base64Png := base64Captcha.CaptchaWriteToBase64Encoding(digitCap)
//or you can do this
//你也可以是用默認(rèn)參數(shù) 生成圖像驗(yàn)證碼
//base64Png := captcha.GenerateCaptchaPngBase64StringDefault(captchaId)
//set json response
//設(shè)置json響應(yīng)
w.Header().Set("Content-Type", "application/json; charset=utf-8")
body := map[string]interface{}{"code": 1, "data": base64Png, "captchaId": captchaId, "msg": "success"}
json.NewEncoder(w).Encode(body)
}
// base64Captcha verify http handler
func captchaVerifyHandle(w http.ResponseWriter, r *http.Request) {
//parse request parameters
//接收客戶端發(fā)送來的請(qǐng)求參數(shù)
decoder := json.NewDecoder(r.Body)
var postParameters ConfigJsonBody
err := decoder.Decode(&postParameters)
if err != nil {
log.Println(err)
}
defer r.Body.Close()
//verify the captcha
//比較圖像驗(yàn)證碼
verifyResult := base64Captcha.VerifyCaptcha(postParameters.Id, postParameters.VerifyValue)
//set json response
//設(shè)置json響應(yīng)
w.Header().Set("Content-Type", "application/json; charset=utf-8")
body := map[string]interface{}{"code": "error", "data": "驗(yàn)證失敗", "msg": "captcha failed"}
if verifyResult {
body = map[string]interface{}{"code": "success", "data": "驗(yàn)證通過", "msg": "captcha verified"}
}
json.NewEncoder(w).Encode(body)
}
//start a net/http server
//啟動(dòng)golang net/http 服務(wù)器
func main() {
//serve Vuejs+ElementUI+Axios Web Application
http.Handle("/", http.FileServer(http.Dir("./static")))
//api for create captcha
http.HandleFunc("/api/getCaptcha", generateCaptchaHandler)
//api for verify captcha
http.HandleFunc("/api/verifyCaptcha", captchaVerifyHandle)
fmt.Println("Server is at localhost:3333")
if err := http.ListenAndServe("localhost:3333", nil); err != nil {
log.Fatal(err)
}
}
運(yùn)行demo代碼
cd $GOPATH/src/github.com/mojocn/captcha/examples
go run main.go
訪問 http://localhost:777
如果喜歡,請(qǐng)star 非常感謝.
License
base64Captcha source code is licensed under the Apache Licence, Version 2.0
(http://www.apache.org/licenses/LICENSE-2.0.html).
