代码示例
### 图形验证码示例
#### 随机文字
![image-20240410091417228](https://wsy997.obs.cn-east-3.myhuaweicloud.com/%E5%A4%A7%E5%89%8D%E7%AB%AF/%E6%B5%85%E8%B0%88%20%E5%89%8D%E7%AB%AF%E9%AA%8C%E8%AF%81%E7%A0%81%E9%82%A3%E4%BA%9B%E4%BA%8B/assets/image-20240410091417228.png)