Integrating ThinkPHP Captcha Extension with Cache Driver and Vue Login Page Implementation

To add a verification code feature in a ThinkPHP 6 multi‑application project, first install the topthink/think-captcha extension via Composer, then locate and modify Captcha.php to replace the default session driver with the cache driver (add use Cache and change session calls to cache calls). Pay special attention to the check method, which has been annotated in the code.

The modified Captcha class includes properties for image size, font, background, noise, and curve drawing, and provides methods to configure, generate, validate, and render the captcha image, with optional Chinese characters and arithmetic mode.

On the frontend, a Vue‑Element‑Admin login page ( login/index.vue) is presented. The template defines an el-form with fields for username, password, and captcha, along with a captcha image that refreshes on click. The script imports validation utilities, defines form rules, handles login submission, toggles password visibility, and fetches the captcha image URL. Scoped and global styles customize the appearance of inputs, buttons, and the overall layout.

Finally, a Vuex store module ( store/user.js) shows a simple login action that calls an API, stores the returned token, and resolves or rejects the promise.