thinkphp5.1全局异常类封装

<?php
namespace app\lib\exception;
use Exception;
class BaseException extends Exception
{
  public $code=400;
  public $msg='异常';
  public $errorCode=999;
  public function __construct($params=[]){
    if(!is_array($params)) return;
    if(array_key_exists('code', $params)) $this->code = $params['code'];
    if(array_key_exists('msg', $params)) $this->msg = $params['msg'];
    if(array_key_exists('errorCode', $params)) $this->errorCode = $params['errorCode'];
  }
}

<?php
namespace app\lib\exception;
use Exception;
use think\exception\Handle;
/**
* PHP异常处理类
*/
class ExceptionHandler extends Handle
{
  public $code;
  public $msg;
  public $errorCode;
  public function render(Exception $e)
  {
    if($e instanceof BaseException){
      $this->code = $e->code;
      $this->msg = $e->msg;
      $this->errorCode = $e->errorCode;
    }else{
      //debug开启，显示默认异常
      if(config('app.app_debug')) return parent::render($e);
      $this->code = 500;
      $this->msg = '服务器异常';
      $this->errorCode = 999;
    }
    $res=[
      'code'=>$this->code,
      'msg'=>$this->msg,
      'errorCode'=>$this->errorCode
    ];
    return json($res,$this->code);
  }
}
?>

<?php
namespace app\Index\controller;
use think\Controller;
use think\Request;
use app\lib\exception\BaseException;    // 这个就是引入我们的异常类
class Index extends Controller
{
    /**
     * 显示资源列表
     *
     * @return \think\Response
     */
    public function index()
    {
      throw new BaseException(['msg'=>'验证失败']);  // 上面的参数可以传也可以不传，不传的话就按默认
    }
}