验证码（easy-captcha）
彭华皓
依赖
<!--验证码依赖-->
<dependency>
<groupId>com.github.whvcse</groupId>
<artifactId>easy-captcha</artifactId>
<version>1.6.2</version>
</dependency>
package com.jm.sso.server.util;
import cn.hutool.core.util.StrUtil;
import com.jm.sso.base.controller.BaseController;
import com.jm.sso.base.result.BaseResponse;
import com.jm.sso.base.util.IpUtils;
import com.jm.sso.base.util.RedisCache;
import com.jm.sso.server.constant.RedisCons;
import com.wf.captcha.ArithmeticCaptcha;
import com.wf.captcha.SpecCaptcha;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.GetMapping;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.HashMap;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
@Component
public class CaptchaUtil extends BaseController {
@Autowired
private RedisCache redisCache;
public void mathCaptcha( HttpServletResponse response) {
//设置请求头为输出图片的类型
response.setContentType("image/jpg");
response.setHeader("Pargam", "No-cache");
response.setHeader("Cache-Control", "no-cache");
response.setDateHeader("Expires", 0);
//生成验证码
ArithmeticCaptcha captcha = new ArithmeticCaptcha(130, 32, 3);
redisCache.setCacheObject(StrUtil.format(RedisCons.CAPTCHA_CODE, IpUtils.getIpAddr()), captcha.text(), 180, TimeUnit.SECONDS);
try {
captcha.out(response.getOutputStream());
} catch (IOException e) {
e.printStackTrace();
}
}
public BaseResponse captcha(HttpServletRequest request, HttpServletResponse response) throws Exception {
SpecCaptcha specCaptcha = new SpecCaptcha(130, 48, 5);
String verCode = specCaptcha.text().toLowerCase();
String key = StrUtil.format(RedisCons.CAPTCHA_CODE, IpUtils.getIpAddr());
// 存入redis并设置过期时间为30分钟
redisCache.setCacheObject(key, verCode, 30,TimeUnit.SECONDS);
// 将key和base64返回给前端
HashMap<String,String> map = new HashMap<>();
map.put("key", key);
map.put("image", specCaptcha.toBase64());
return setResultSuccess(map);
}
public BaseResponse verifyCode( String code) {
String key = StrUtil.format(RedisCons.CAPTCHA_CODE, IpUtils.getIpAddr());
String captcha = redisCache.getCacheObject(key);
if(StrUtil.isBlank(captcha)){
return setResultError("验证码失效");
}
if(StrUtil.equals(captcha,code)){
redisCache.deleteObject(key);
return setResultSuccess();
}
return setResultError("验证码校验失败");
}
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
* {
margin: 0;
padding: 0;
}
html {
height: 100%;
}
body {
height: 100%;
}
.container {
height: 100%;
background-image: linear-gradient(to right, #fbc2eb, #a6c1ee);
}
.login-wrapper {
background-color: #fff;
width: 358px;
height: 588px;
border-radius: 15px;
padding: 0 50px;
position: relative;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
}
.header {
font-size: 38px;
font-weight: bold;
text-align: center;
line-height: 200px;
}
.input-item {
display: block;
width: 100%;
margin-bottom: 20px;
border: 0;
padding: 10px;
border-bottom: 1px solid rgb(128, 125, 125);
font-size: 15px;
outline: none;
}
.input-item:placeholder {
text-transform: uppercase;
}
.btn {
text-align: center;
padding: 10px;
width: 100%;
margin-top: 40px;
background-image: linear-gradient(to right, #a6c1ee, #fbc2eb);
color: #fff;
}
.msg {
text-align: center;
line-height: 88px;
}
a {
text-decoration-line: none;
color: #abc1ee;
}
</style>
</head>
<body>
<div class="container">
<div class="login-wrapper">
<div class="header">Login</div>
<div class="form-wrapper">
<input id="username" type="text" name="username" placeholder="username" class="input-item">
<input id="passowrd" type="password" name="password" placeholder="password" class="input-item">
<img id="captcha" ref="vcImg" onclick="getCaptcha()">
<div class="btn"onclick="doLogin()">Login</div>
</div>
<div class="msg">
Don't have account?
<a href="#">Sign up</a>
</div>
</div>
</div>
</body>
<!--<script type="text/javascript" src="/js/axios.js"></script>-->
<!--<script type="text/javascript" src="/js/jquery.min.js"></script>-->
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.2/jquery.js"></script>
<script>
getCaptcha();
// function getCaptcha(){
// axios.get("http://127.0.0.1:7000/mathCaptcha").then(res=>{
// debugger;
// console.log(res.data.img)
// document.getElementById("captcha").src =res.data
// })
//
// }
function getCaptcha() {
$("#captcha").attr("src", "/mathCaptcha?" + "&time=" + new Date());
console.log("请求准备发送");
// $.ajax({
// url: "/mathCaptcha?"+Math.random(), //请求接口的地址
// type: "GET", //请求的方法GET/POST
// // data: { //需要传递的参数
// // name: 'sl',
// // password: '123456',
// // },
// success: function (res) {
// debugger;//请求成功后的操作
// console.log(res);
// document.getElementById("captcha").src =res
// },
// error: function (err) { //请求失败后的操作
// console.log(22); //请求失败在控制台输出22
// }
// })
}
function doLogin(){
var username = document.getElementById("username").value;
var passowrd = document.getElementById("passowrd").value;
alert(username);
alert(passowrd);
}
</script>
</html>
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