业务逻辑异常类

业务逻辑异常类

<?php

namespace App\Exceptions;

use Exception;

class BusinessException extends Exception
{
    protected $data;

    public function __construct ( $message, $code = 0, $data = [], Exception $previous = null )
    {
        $this->data = $data;
        parent::__construct( $message, $code, $previous );
    }

    // 获取额外数据
    public function getData ()
    {
        return $this->data;
    }

    // 转换为 JSON 格式
    public function toJson ()
    {
        $response = [
            'code'    => $this->getCode(),
            'message' => $this->getMessage(),
            'data'    => $this->getData(),
        ];

        if ( $this->getPrevious() ) {
            $response['previous'] = $this->getPrevious()->getMessage();
        }

        return toolJsonEncode( $response );
    }

    // 直接输出 JSON 错误
    public function renderJson ()
    {
        header( 'Content-Type: application/json' );
        http_response_code( $this->getCode() ?: 500 );
        echo $this->toJson();
        exit;
    }
}

/**
  * @param string $message
  * @param int $code
  * @return array
  */
function error ( $message = '操作失败~', $code = 500 )
{
    try {
        throw new BusinessException( $message, $code );
    } catch ( BusinessException $e ) {
        return $e->renderJson();
    }
}

/**
  * @param array $data
  * @param string $message
  * @return array
  */
function success ( $data = [], $message = '操作成功~' )
{
    try {
        throw new BusinessException( $message, 200, $data );
    } catch ( BusinessException $e ) {
        return $e->renderJson();
    }
}