thinkPHP5框架设置404、403等http状态页面的方法

'app_debug' => false,

'http_exception_template'  => [
    // 定义404错误的重定向页面地址
    404 => APP_PATH.'404.html',
    // 还可以定义其它的HTTP status
    401 => APP_PATH.'401.html',
    403 => APP_PATH.'404.html',
  ],

<img src="__INDEX__/img/404.png" width="818" height="595" style="display: block;margin: 0 auto;">
<div class="" style="font-size: 36px;margin: 0 auto;text-align: center;color: #323232;">
  您查找的页面不存在，还有
  <span id="dd" style="color:darkorange;font-weight: bold;">6</span>
  秒，页面将自动跳转首页...
</div>
<!--倒计时-->
<script type="text/javascript">
function run(){
  var s = document.getElementById("dd");
  if(s.innerHTML == 0){
    window.location.href='/';
    return false;
  }
  s.innerHTML = s.innerHTML  1 - 1;
}
window.setInterval("run();", 1000);
</script>

if (Request::instance()->isAjax()) {
  $data = input();
  $info = [];
  $where = '';
  switch ($data['msg']) {
  case '验证码':
    $info = [
    'y' => '输入正确',
    'n' => '输入错误',
    ];
  $where = session::get('admin_login_session') == md5($data['param']);break;
 }
 if ($where) {
  echo '{"info":"' . $data['msg'] . $info ['y'] . '","status":"y"}';//注意ValidForm返回格式(json)
 } else {
  echo '{"info":"' . $data['msg'] . $info ['n'] . '","status":"n"}';//注意ValidForm返回格式(json)
 }
}else{
 throw new \think\exception\HttpException(403, '~~~非法请求~~~');
}