The verification code in the Thinkphp5 teaching management system keeps prompting an error and cannot be logged in.

Question

Answer 1

I also encountered this problem, here’s how I solved it

The parameters in $map and the database fields must be the same, otherwise there will be no response after the first click, and the verification code will be wrong the second time

Answer 2

这个地方查询数据库是有问题的
在头部use think\Db;

public function checkLogin(Request $request) {
    //初始化返回参数
    $state = 0;
    $result = '';
    $data = $request->param();
    $rule = [
        'name|用户名' => 'require',
        'password|密码' => 'require',
        'verify|验证码' => 'require|captcha',
    ];
    //自定义验证识别的提示信息
    $msg = array('name' => array('require' => '用户名不能为空,请检查您的用户名!'),
        array('password' => array('require' => '密码不能为空,请检查您的密码~')),
    );
    //validate 验证规则      1数据  2规则 3提示
    $result = $this->validate($data, $rule, $msg);
    //如果验证通过执行查询
    if ($result === true) {
        //构造查询条件
        $map = [
            'name' => $data['name'],
            'password' => md5($data['password'])
        ];
        $user = Db::table('user')->where($map)->find();

        if (!$user) {
            $result = '没有该用户,请检查';
        } else {
            $state = 1;
            $result = '验证通过,点击[确定]后进入后台';
        }

    }
    //进行验证
    return ['state' => $state, 'message' => $result, 'data' => $data];

}

Answer 3

The error code is: Failed to load resource: the server responded with a status of 500 (Internal Server Error)