base64Captcha快速生成base64編碼圖片驗證碼字符串
支持多種樣式,算術,數字,字母,混合模式,語音模式.
Base64是網絡上最常見的用于傳輸8Bit字節代碼的編碼方式之一。Base64編碼可用于在HTTP環境下傳遞較長的標識信息, 直接把base64當成是字符串方式的數據就好了
減少了http請求；數據就是圖片；
為APIs微服務而設計
為什么base64圖片 for RESTful 服務
Data URIs 支持大部分瀏覽器,IE8之后也支持.
小圖片使用base64響應對于RESTful服務來說更便捷
godoc文檔
在線Demo Playground Powered by Vuejs+elementUI+Axios
安裝golang包
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go get -u github.com/mojocn/base64Captcha |
創建圖像驗證碼
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import "github.com/mojocn/base64Captcha"func demoCodeCaptchaCreate() { //config struct for digits //數字驗證碼配置 var configD = base64Captcha.ConfigDigit{ Height: 80, Width: 240, MaxSkew: 0.7, DotCount: 80, CaptchaLen: 5, } //config struct for audio //聲音驗證碼配置 var configA = base64Captcha.ConfigAudio{ CaptchaLen: 6, Language: "zh", } //config struct for Character //字符,公式,驗證碼配置 var configC = base64Captcha.ConfigCharacter{ Height: 60, Width: 240, //const CaptchaModeNumber:數字,CaptchaModeAlphabet:字母,CaptchaModeArithmetic:算術,CaptchaModeNumberAlphabet:數字字母混合. 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")} |
驗證圖像驗證碼
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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
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// 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 handlerfunc generateCaptchaHandler(w http.ResponseWriter, r *http.Request) { //parse request parameters //接收客戶端發送來的請求參數 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 //創建base64圖像驗證碼 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 //你也可以是用默認參數 生成圖像驗證碼 //base64Png := captcha.GenerateCaptchaPngBase64StringDefault(captchaId) //set json response //設置json響應 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 handlerfunc captchaVerifyHandle(w http.ResponseWriter, r *http.Request) { //parse request parameters //接收客戶端發送來的請求參數 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 //比較圖像驗證碼 verifyResult := base64Captcha.VerifyCaptcha(postParameters.Id, postParameters.VerifyValue) //set json response //設置json響應 w.Header().Set("Content-Type", "application/json; charset=utf-8") body := map[string]interface{}{"code": "error", "data": "驗證失敗", "msg": "captcha failed"} if verifyResult { body = map[string]interface{}{"code": "success", "data": "驗證通過", "msg": "captcha verified"} } json.NewEncoder(w).Encode(body)} //start a net/http server//啟動golang net/http 服務器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) }} |
運行demo代碼
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cd $GOPATH/src/github.com/mojocn/captcha/examplesgo run main.go |
訪問 http://localhost:777
到此這篇關于golang包快速生成base64驗證碼的方法的文章就介紹到這了,更多相關golang base64驗證碼內容請搜索服務器之家以前的文章或繼續瀏覽下面的相關文章希望大家以后多多支持服務器之家！
原文鏈接：https://www.cnblogs.com/dfsxh/p/10243542.html
