验证码实现原理

1、请求URL

http://localhost/dev-api/captchaImage

• 返回效果

{
    "msg": "操作成功", 
    "img": "/9j/4AAQSkZJRgABAgAAAQABAAD/2wBDAAgGBgcGB....=", 
    "code": 200, 
    "captchaEnabled": true, 
    "uuid": "f16c095bbe4c438eaa7d6cc1a85d0edf"
}