Laravel框架实现修改登录和注册接口数据返回格式的方法

use AuthenticatesUsers;

public function login(Request $request)
{
    $this->validateLogin($request);
    if ($this->attemptLogin($request)) {
      $user = $this->guard()->user();
      $user->generateToken();
      $ret=new RetObject();
      $ret->retCode="0000";
      $ret->retMsg='success';
      $ret->data= $user->toArray();
    }else{
      $ret=new RetObject();
      $ret->retCode="0001";
      $ret->retMsg='failed';
      $ret->data= null;
    }
    return response()->json($ret);
}

Route::post('register', 'Auth\RegisterController@register');

use RegistersUsers;
RegistersUsers的register
public function register(Request $request)
{
    $this->validator($request->all())->validate();
    event(new Registered($user = $this->create($request->all())));
    $this->guard()->login($user);
    return $this->registered($request, $user)
            ?: redirect($this->redirectPath());
}

protected function registered(Request $request,$user)
{
  $user->generateToken();
  $ret=new RetObject();
  $ret->retCode="0000";
  $ret->retMsg='register success';
  $ret->data= $user->toArray();
  return response()->json($ret);
}

try{
  $user->generateToken();
  $ret=new RetObject();
  $ret->retCode="0000";
  $ret->retMsg='register success';
  $ret->data= $user->toArray();
  return response()->json($ret);
}catch (Exception $exception){
  $ret=new RetObject();
  $ret->retCode="0001";
  $ret->retMsg='register failed';
  $ret->data= null;
  return response()->json($ret);
}

public function render($request, Exception $exception)
{
    // This will replace our 404 response with
    // a JSON response.
    if ($exception instanceof ModelNotFoundException &&
      $request->wantsJson())
    {
      $ret=new RetObject();
      $ret->retCode="404";
      $ret->retMsg='页面未找到';
      $ret->data= null;
      return response()->json($ret);
    }elseif ($exception instanceof ValidationException)
    {
      $ret=new RetObject();
      $ret->retCode="0001";
      $ret->retMsg=$exception->getMessage();
      $ret->data= null;
      return response()->json($ret);
    }
    return parent::render($request, $exception);
}

public function report(Exception $e)
{
    if ($this->shouldntReport($e)) {
      return;
    }
    try {
      $logger = $this->container->make(LoggerInterface::class);
    } catch (Exception $ex) {
      throw $e; // throw the original exception
    }
    $logger->error($e);
}
public function render($request, Exception $e)
{
    $e = $this->prepareException($e);
    if ($e instanceof HttpResponseException) {
      return $e->getResponse();
    } elseif ($e instanceof AuthenticationException) {
      return $this->unauthenticated($request, $e);
    } elseif ($e instanceof ValidationException) {
      return $this->convertValidationExceptionToResponse($e, $request);
    }
    return $this->prepareResponse($request, $e);
}