源码有毒：JFinal源码解析之验证码

JFinal自动集成了验证码模块，使用起来也非常简单
后台Controller

public class UserController extends Controller{
   
   

    private static final String FORM_ITEM_CODE = "code";

    /**
     * 返回验证码
     */
    public void code(){
        renderCaptcha();
    }

    public void login(){
       String result = "";
        //验证验证码
        if(validateCaptcha(FORM_ITEM_CODE)){
           // 验证码验证成功
            result = "验证成功";

       }else{
            result = "验证失败";
       }
       renderText(result);
    }

}

前端html页面

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>