egg(37)--创建基类base.js，tools.js的server(验证码)

目录结构

基类base.js

controller/admin/base.js

'use strict';

const Controller = require('egg').Controller;

class BaseController extends Controller {
  async success(redirectUrl) {
    // this.ctx.body = '成功'
    await this.ctx.render('admin/public/success',{
        redirectUrl:redirectUrl
    })
  }
  async error(redirectUrl) {
    // this.ctx.body = '失败'
    await this.ctx.render('admin/public/error',{
        redirectUrl:redirectUrl
    })
  }
}

module.exports = BaseController;

新增router

router.js

  router.get('/admin/login', controller.admin.login.index);
  router.get('/admin/doLogin', controller.admin.login.doLogin);

controller

controller/admin/login.js
其中的this.success('/admin/login')由base.js调用，实现登录成功和失败后的跳转

'use strict';

var BaseController = require('./base.js')

class LoginController extends BaseController {
  async index() {
    await this.ctx.render('admin/login')
  }
  async doLogin() {
    await this.success('/admin/login')
  }
}

module.exports = LoginController;

view

view/public/success.html

<%- include ../public/page_header.html %>

 <meta http-equiv="refresh" content="3;url=<%=redirectUrl%>"> 

<div class="container-fluid">
    <div class="row">
        <div class="col-sm-2">
            <%- include ../public/page_aside.html %>                
          
        </div>
        <div class="col-sm-10">
          
            <div class="alert alert-success">
                
                <h2>操作成功!</h2>
                
                <br />
                    
                <p>如果您不做出选择，将在 3秒后跳转到第一个链接地址。</p>
            
            
            </div>

        </div>
    </div>
</div>

</body>
</html>

view/public/error.html

<%- include ../public/page_header.html %>

 <meta http-equiv="refresh" content="3;url=<%=redirectUrl%>"> 

<div class="container-fluid">
    <div class="row">
        <div class="col-sm-2">
            <%- include ../public/page_aside.html %>                
          
        </div>
        <div class="col-sm-10">
          
            <div class="alert alert-danger">
                
                <h2>操作失败!</h2>
                
                <br />
                    
                <p>如果您不做出选择，将在 3秒后跳转到第一个链接地址。</p>
            
            
            </div>

        </div>
    </div>
</div>

</body>
</html>

效果

成功页面，然后跳转到login

tools.js的server(验证码)

因为admin和index登录都要用到验证码,所以放在server/tools里面

一个验证码,对应一张图片
请求验证码的时候，把验证码的text当成session存放在服务端
登录的时候，看到后台传给前端的验证码图片，输入数字
提交给后台，看传过去的验证码和session是否相等

安装验证码包

cnpm install svg-captcha --save

新增router.js

 router.get('/admin/verify', controller.admin.base.verify);

controller

controller/base.js

  async verify(){
      var captcha = await this.service.tools.captcha();
      this.ctx.response.type="image/svg+xml";
      console.log(captcha.data)
      this.ctx.body = captcha.data
  }

打印captcha.data得到一个svg

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service/tools.js

const svgCaptcha = require('svg-captcha');
  async captcha() {
    var capctcha = svgCaptcha.create({})
    this.ctx.session.code = capctcha.text;
    console.log("验证码"+this.ctx.session.code)
    return capctcha
  }

view

login.html

访问/admin/verify

<img id="verify_img" src="/admin/verify" title="看不清？点击刷新" onclick="javascript:this.src='/admin/verify?mt='+Math.random()">

egg(37)--创建基类base.js，tools.js的server(验证码)

目录结构

基类base.js

新增router

controller

view

效果

tools.js的server(验证码)

安装验证码包

新增router.js

controller

service/tools.js

view

访问/admin/verify

访问/admin/login

渣渣辉

引用和评论

springboot(二)、RestApi