TP5 接口设计中异常处理

<?php
namespace appcommonexception;

use Exception;
use thinkexceptionHandle;
use thinkfacadeRequest;
use thinkLog;

class ExceptionHandler extends Handle {

    private $code;
    private $msg;
    private $errorCode;

    public function render(Exception $e) {
        if ($e instanceof BaseException) {
            //如果是自定义异常，则控制http状态码，不需要记录日志
            //因为这些通常是因为客户端传递参数错误或者是用户请求造成的异常
            //不应当记录日志

            $this->code = $e->code;
            $this->msg = $e->msg;
            $this->errorCode = $e->errorCode;
        } else {
            // 如果是服务器未处理的异常，将http状态码设置为500，并记录日志
            if (config('app_debug')) {
                // 调试状态下需要显示TP默认的异常页面，因为TP的默认页面
                // 很容易看出问题
                return parent::render($e);
            }

            $this->code = 500;
            $this->msg = 'sorry，we make a mistake. (^o^)Y';
            $this->errorCode = 999;
            $this->recordErrorLog($e);
        }

        $request = Request::instance();
        $result = [
            'msg' => $this->msg,
            'error_code' => $this->errorCode,
            'request_url' => $request = $request->url(),
        ];
        return json($result, $this->code);
    }

    /*
             * 将异常写入日志
    */
    private function recordErrorLog(Exception $e) {
        Log::init([
            'type' => 'File',
            'path' => LOG_PATH,
            'level' => ['error'],
        ]);
        Log::record($e->getMessage(), 'error');
    }

}

<?php
namespace appcommonexception;
use thinkException;

/**
 * Class BaseException
 * 自定义异常类的基类
 */
class BaseException extends Exception {
    public $code = 400;
    public $msg = 'invalid parameters';
    public $errorCode = 999;

    /**
     * 构造函数，接收一个关联数组
     * @param array $params 关联数组只应包含code、msg和errorCode，且不应该是空值
     */
    public function __construct($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 appcommonexception;

class UserException extends BaseException {
    public $code = 404;
    public $msg = '用户不存在';
    public $errorCode = 60000;
}

    try {
            //todo...
            throw new appcommonexceptionUserException();

        } catch (Exception $e) {

        }