此功能基于vue（v2.6.8） + typescript（v3.3.3333）, 引入极验（geetest v3+）（官方api），使用其product: 'bind'模式， 页面挂载后初始化ininGeetest，点击登录按钮后先做表单验证，通过后弹出滑块框，拖动验证成功，执行登录方法。
本项目为前后端分离，所以后端部署部分，请自行参考文档操作
后台接口：
开始：/public/js目录添加 jquery-1.12.3.min.js文件 和 gt.js（下载）在/public/index.html中引入以上添加的两个文件login.vue使用注意事项：要注意在gt.js中，initGeetest已被挂载到window对象
页面可能报错： Uncaught SyntaxError: Unexpected token <
将报错对象添加到与public同级的static目录下（没有则新建），修改引入路径即可。
源码：
<script lang="ts"> import { isValidUsername } from '@/utils/validate'; import { Component, Vue, Watch } from 'vue-property-decorator'; import { Route } from 'vue-router'; import { ElForm } from 'element-ui/types/form'; import { Loading } from 'element-ui'; import { Action } from 'vuex-class'; import AuthServices from '@/services/user/auth.ts'; import ThirdpartyServices from '@/services/thirdparty/index.ts'; const validateUsername = (rule: any, value: string, callback: any) => { if (! value) { callback(new Error('用户名不能为空')); // } else if (!isValidUsername(value)) { // callback(new Error('请输入正确的用户名')); } else { callback(); } }; const validatePass = (rule: any, value: string, callback: any) => { if (! value) { callback(new Error('密码不能为空')); // } else if (value.length < 5) { // callback(new Error('密码不能小于5位')); } else { callback(); } }; @Component({ name: 'login', }) export default class Login extends Vue { @Action('auth/login') private login_action!: CCS.LoginAction; private loginForm = { username: '', password: '' }; private loginRules = { username: [{trigger: 'blur', validator: validateUsername }], password: [{trigger: 'blur', validator: validatePass }], }; private loading = false; private redirect: string | undefined = undefined; private captchaEntity: any; // private loadingInstance: any; @Watch('$route', { immediate: true }) private OnRouteChange(route: Route) { this.redirect = route.query && route.query.redirect as string; } // private created() { // this.loadingInstance = Loading.service({ // customClass: 'login_loading', // text: '正在初始化，请稍后', // fullscreen: true, // lock: true, // }); // } /** ==================== 验证 START ========================= */ /** * 页面挂载后，后台获取初始化initGeetest所需参数值 */ private async mounted() { ThirdpartyServices.geetest_init().then((result) => { // this.loadingInstance.close(); if (result.status) { this.initGeetest(result.data); } else { this.$message({ type: 'error', message: result.message }); } }); } /** * initGeetest 初始化 */ private initGeetest(param: CCS.GeettestInitType) { if ( ! (window as any) || ! (window as any).initGeetest ) { return false; } (window as any).initGeetest({ gt: param.gt, challenge: param.challenge, offline: ! param.success, new_captcha: param.newcaptcha, timeout: '5000', product: 'bind', width: '300px', https: true, }, this.captchaObj_callback); } /** * 初始化后的回调函数 */ private async captchaObj_callback(captchaObj: any) { this.captchaEntity = captchaObj; // promise对象 captchaObj .onReady(() => { // 验证码就位 }) .onSuccess(() => { const rst = captchaObj.getValidate(); if (!rst) { this.$message({ type: 'warning', message: '请完成验证'}); } // 调用后台check this.captchaObj this.verify_check(rst); }) .onError((err: Error) => { console.log(err); }); } /** * 后台验证初始化结果 */ private async verify_check(validateResult: any) { ThirdpartyServices.geetest_checked(validateResult.geetest_challenge, validateResult.geetest_validate, validateResult.geetest_seccode ).then((result) => { if (result.status && result.data.result) { // 验证通过，发送登录请求 this.handleLogin(result.data.token); } else { this.$message({ type: 'error', message: '验证失败'}); return false; } }); } /** ==================== 验证 END ========================= */ /** * 点击登录按钮，弹出验证框 */ private login_btn_click() { (this.$refs.refform as ElForm).validate((valid) => { if (valid) { this.captchaEntity.verify(); // 显示验证码 } }); } /** * 验证成功，发送登录请求 */ private async handleLogin(token: string) { this.loading = true; const { status, message} = await this.login_action({username: this.loginForm.username.trim(), password: this.loginForm.password, token}); this.loading = false; if (status) { this.$message({type: 'success', message: '登录成功'}); this.$router.push({ path: this.redirect || 'https://www.jb51.net/' }); } else { this.$message({type: 'error', message}); } } } </script> <template> <div> <div> <div> <img :src="require('@/assets/images/logo_w328.png')"> </div> <img :src="require('@/assets/images/login_form.png')"> <el-form ref="refform" auto-complete="on" label-position="left" :model="loginForm" :rules="loginRules"> <el-form-item prop="username"> <el-input v-model="loginForm.username" type="text" auto-complete="on" placeholder="用户名"/> <i></i> </el-form-item> <el-form-item prop="password"> <el-input v-model="loginForm.password" type="password" auto-complete="on" placeholder="密码" @keyup.enter.native="handleLogin" /> <i></i> </el-form-item> <el-form-item> <el-button v-if="!loading" @click.native.prevent="login_btn_click">登录</el-button> <el-button :loading="loading" v-else @click.native.prevent="handleLogin">登录中</el-button> </el-form-item> </el-form> </div> </div> </template> <style lang="stylus" scoped> @import '~@/assets/styles/var.styl'; @import '~@/assets/styles/pages/login.styl'; .login-container pass </style>